CITYWEST HOMES 21 GROSVENER PLACE LONDON...issue release 8 july 2017 citywest homes 21 grosvener...

Issue Release 8 July 2017

CITYWEST HOMES

21 GROSVENER PLACE

LONDON

SW1X 7EA

STANDARD SPECIFICATION FOR DOOR ENTRY SYSTEMS,

NEW DOORS & SCREENS AND ASSOCIATED WORK

Issue Date - Jul 2017 CityWest Homes - 2 -

CONTENTS

2.0 SECTION 2 DOOR ENTRY SYSTEMS GENERAL SPECIFICATION 4

2.1 GENERAL 4

2.1.1 General Requirements 4

2.1.2 Class of Works 5

2.1.3 Information to be Provided by the Contractor 6

2.2 DOOR ENTRY SYSTEM EQUIPMENT 7

2.2.1 Fundamental Requirements 7

2.2.2 Entrance Call panels 8

2.2.3 Proximity Access Control Standalone Readers. 12

2.2.4 Controls and Ancillaries Power Supplies 13

2.2.5 Sub Distribution Cabinets 16

2.2.6 Apartment Handsets 17

2.2.7 Fireman’s Drop Key Switch 18

2.2.8 Push to Exit Button (PTE) 20

2.2.9 Proximity Access Control 21

2.3 DOORS AND SCREENS 35

2.3.1 General 27

2.3.2 Interface with Existing Finishes 28

2.3.3 Existing Underfloor Door Closers 28

2.3.4 Door Stops 28

2.3.5 Fabrication and Constructional Details 29

2.4 SPECIFICATION FOR POWDER COATING OVER HOT DIP GALVANISING 31

2.4.1 Coating Materials 31

2.4.2 Doors 32

2.4.3 Closers and Operators 34

2.4.4 Installation and Workmanship 35

2.4.5 Functional Test 38

2.5 ELECTRICAL INSTALLATION STANDARDS 39

2.5.1 Conduit and Trunking 39

2.5.2 Supports and Fixings: 43

2.5.3 LV Cables and Wiring 49

2.5.4 Cable Installation - General 51

2.5.5 Cable Jointing and Terminating, Generally 53

2.5.6 Support Components -Cables 54

2.5.7 LV Switchgear and Distribution Boards 56

2.5.8 Distribution Boards 56


2.5.9 Luminaires and Lamps 58

2.5.10 Accessories for Electrical Services 64

2.5.11 Electromagnetic Compatibility 69

2.5.12 Earthing and Bonding 69

2.5.13 Testing and Commissioning 72

2.5.14 Identification of Electrical Services 74

2.5.15 Fixing to Building Fabric 79

2.5.16 Off Site Painting and Anti-Corrosion Treatments 81

2.5.17 Testing, Commissioning and Record Documentation. 84

2.5.18 BS APPENDIX 89


2.0 SECTION 2 DOOR ENTRY SYSTEMS GENERAL SPECIFICATION

2.1 GENERAL

These clauses shall be read in conjunction with the particular specification and all

other sections of this specification. Where two different standards are cited the

higher standard shall prevail in all instances.

2.1.1 General Requirements

All electrical installation works shall be designed, selected and erected in

compliance with BS 7671: 2008 Requirements for Electrical Installations (including

all Amendments up to the date of tender).

This section of the Specification shall be read in conjunction with all other sections

and in particular the electrical engineering general clauses.

Particular attention is drawn to the following, which lists relevant statutory

instruments, regulations and codes of practice. The list is not exhaustive and any

omissions from the list shall not exonerate the Contractor from his responsibilities

under his duty of care.

• The Health & Safety at Work Act 1974.

• The Electricity at Work Regulations 1989.

• The Construction, Design & Management Regulations 2007.

• The Management of Health & Safety Works Regulations 1992.

• The Workplace (Health, Safety and Welfare) Regulations 1992.

• The Provision and Use of Work Equipment Regulations 1992.

• The Manual Handling Operations Regulations 1992.

• The Personal Protective Equipment at Work Regulations 1992.

• The Factories Act 1961.

• The Offices, Shops & Railways Premises Act 1963.

• The Fire Precautions Act 1971.

• The Control of Substances Hazardous to Health Regulations 1988.

• The Noise at Work Regulations 1989.

• The Abrasive Wheels Regulations 1970.

• The Health & Safety (First-Aid) Regulations 1981.

• The Reporting of Injuries, Diseases and Dangerous Occurrences Regulations

1972.

• The Highly Flammable Liquids & Liquefied Petroleum Gases Regulations 1972.

• The Safety Representative and Safety Committees Regulations 1977.

• The Safety Sign Regulations 1980.

• The Health & Safety Information for Employees Regulations 1977.

• The Control of Asbestos at Work Regulations 2002

• Building Regulations.

• Local Bye-Laws (including Fire Officer’s requirement).

• Trade Association Recommendations, such as – National Inspection Council for

Electrical Installation Contracting, and in particular their Technical Guidance

Manuals.

• Chartered Institution of Building Service Engineers (CIBSE) Recommendations.

• Employers Site Access & Security Regulations.


The Contractor shall comply with:

• All Standards referred to within this Specification.

• CIBSE Publications.

• Fire Prevention on Construction Sites - Fire & Safety in Section 20 Building.

• The Construction/General Provisions (Lifting Operations) (Working Places)

Health & Welfare Regulations.

• Regulations under the Electricity Acts.

All works shall be installed to facilitate ease of inspection, testing and maintenance.

The Contractor shall make good at no extra cost to the Contract any part of the

works that has not been carried out to the full satisfaction of the Engineer/CA

All cables shall be routed and supported to be a minimum distance of 100 mm clear

of steam, water or other pipe work and ventilation duct work when fully lagged or

insulated. A minimum separation of 300 mm shall be maintained between any other

heat emitting surface of plant, equipment or pipe work that is not lagged or

insulated.

Where these requirements cannot be met, the Contractor shall refer to the Engineer

before starting that section of the works.

Electrical services which run parallel with hot water or heating services pipes shall

not be installed above such services.

Temporary electrical installations shall comply in all respects with BS 7671 and all

relevant codes of practice. Under no circumstances shall temporary electrical

installations be allowed to compromise health and safety.

2.1.2 Class of Works

a. All works shall conform to the best principles of modern practice and shall be

carried out by fully competent tradesmen of the appropriate grades.

b. The whole of the works shall comply with the requirements of the following

bodies or authorities where applicable, with all amendments in force at the

date of tender:-

i) The Regulations for Electrical Installations 17th Edition as published by

the Institution of Electrical Engineers subsequently referred to as the IET

(IEE) Wiring Regulations.

ii) The Electricity Supply Regulations 1988.

iii) The relevant Codes of Practice and British Standard Specifications as

published by the British Standards Institution.

iv) The Fire Officers Committee Regulations and the Local Fire Officers

requirements.

v) Local Bye Laws and the regulations and requirements of other

Authorities.

vi) Health and Safety at Work Act 1974 with particular reference to the

Electricity at Work Act 1989.

vii) Building Regulations.

viii) Any other relevant regulations statutory or otherwise.


c. All works shall be installed to facilitate ease of inspection, testing and

maintenance.

d. The Contractor shall make good at no extra cost to the Contract any part of

the work that has not been carried out to the full satisfaction of the Engineer.

2.1.3 Information to be Provided by the Contractor

2.1.3.1 Contractor Survey Details

A fully detailed survey shall be carried out, by the Contractor, to ascertain all

relevant site details, prior to carrying out any drawings works and ordering of

materials or construction works.

The survey shall include, but shall not be limited to:

• Positions of existing doors and screens

• Positions of existing door entry equipment, including door panels, RTE

buttons, stand-alone fob readers, control and intermediate panels, power

supplies and the like.

• Building finishes (walls, ceilings and floors).

• Location of electrical supplies and other services.

• Location of risers.

2.1.3.2 Working Drawings

Working drawings shall be provided for all installation works. Existing building

layouts are not, generally, available and the Contractor shall include for preparing

layouts of all relevant areas affected by the ingoing doors and door entry systems.

These shall be provided in sufficient detail to enable the scheme to be reviewed as a

whole.

The Contractor shall include in his tender for the preparation of all Working,

Drawings, Builders Work and Installation Drawings together with any detail drawings

necessary to facilitate the installation, to the satisfaction of the CA. Such drawings

shall be submitted to the CA for comment in such time so as not to impede the

progress of the Works

A period of 14 days minimum from receipt of drawings is required by the CA to

comment on the drawings prior to use by the Contractor as Construction Drawings. This

time period shall be included in the Contractor’s programmes.

Such general comments as given by the CA shall not relieve the Contractor of any

responsibility for the accuracy of details as set out on the drawings.

Failure to prepare and present Working and Construction drawings to the CA, as

required above shall render the Contractor liable to all consequential costs incurred

by the Employer or the CA in the correction of the Works

Working drawings shall comprise:

• Fully dimensioned plan of location(s) of ingoing services and equipment

(including doors, cabinets, buttons, switches, panels risers and the like)


• Fully dimensioned elevations and sections (whether existing or new). NOTE:

at least 3m each side and to above shall be included in elevations to clearly

show how the proposed doors and screen integrate into the building

elevations.

• Fully dimensioned details of all equipment being installed and its

relationship to the other equipment and to the building.

• Details of any text and wording required (including engraving details,

address, numbering and the like.)

• Details of coordination with existing buildings, including locations of risers

and switchrooms and any locations in which equipment will be installed.

• Coordination of ingoing services and installations with any existing services

• Coordination with any temporary structures, services, components and the

like.

• Any temporary works required, especially to maintain existing systems

• Details of how the new scheme integrates into the existing building

including fillets and fillers, trimmers, cover strips thresholds and other

building interfaces.

• Details of fixings to the structure. NOTE gaps between the ingoing doors

and screens and the building shall not exceed 6mm. Any fixings with gaps

found to exceed 6mm will not be accepted.

NOTE: These requirements exceed the standards and services offered by many

suppliers. The Contractor shall ensure all his suppliers are fully aware of the

requirements of this specification.

2.2 DOOR ENTRY SYSTEM EQUIPMENT

2.2.1 Fundamental Requirements

Door entry systems shall provide a degree of security to the main entrances and

landing entrances to restrict access to dwellings.

This section shall be read in conjunction with all other sections of this specification.

All Door entry and access control equipment to comply with this specification and

only equipment that will have spare components available for a minimum of 10

years from the commencement of the works shall be acceptable.

All door entry equipment shall have TWO years parts only manufacturer’s warranty.

All proximity access control equipment shall have FIVE years parts only

manufacturer’s warranty.

All proximity access control key fobs shall have a lifetime warranty.

The door entry system shall be DDA compliant in line with CITYWEST HOMES’

requirements for disabled access and shall comply fully with this specification. To

this end all systems shall be designed and installed to meet the requirements of

BS8300:2009+A1:2010 and Part M of the Building Regulations.


Door entry systems shall comprise, generally:

• Stainless steel door entry call panels mounted adjacent to entrances.

• Non contact electronic fob reader incorporated into door entry call panels.

• Fireman’s drop key switch to release controlled doors, mounted at high level,

above the door entry call panel.

• Twin magnetic locks, the top one monitored.

• Request to exit push button.

All equipment to be vandal and tamper resistant, BS316, marine grade stainless

steel.

The whole assembly shall be fully sealed against ingress of moisture, adverse

weather and arranged so that water ingress has no affect on the operation of the

system.

The panels and user interfaces shall be vandal resistant and tamperproof.

All components shall be of modular design to permit easy maintenance.

All door entry panel fascias shall be a minimum 2.5mm (12SWG) Stainless Steel

BS316 marine grade brushed or similar finish.

All call panels shall incorporate both audible and visible indication with an LED

display or LCD as described elsewhere.

2.2.2 Entrance Call panels

2.2.2.1 Functional Panels

The following requirements for equipment apply: -

The entry control panel(s) shall comprise a manual/functional audio system with call

buttons for each dwelling up to a maximum of 12 dwelling. (Above this number the

panels shall be a digital system) The button arrangement shall have a maximum of two

columns (up to 6 rows) which shall be connected and controlled from the KMS Cloud

based system. There is to be no tradesmen’s button. Buttons shall be arranged on the

face plate in a logical manner and, where practicable, to mimic the layout of the flats.

Final arrangements to be submitted for comment prior to any manufacture taking place.

The panel shall include a DDA compliant proximity reader with a raised tactile key

symbol and shall be coloured to suit R.N.I.B. preference (yellow and black), fully

vandal resistant. The No “5” button shall incorporate a raised pimple to aid the

blind.

Engraved numerals shall be not less than 6mm high and shall be colour Black.

Panels shall incorporate a liquid crystal display (LCD) to provide user information,

including:


• “Door Open” This shall be message shall include an audio door open tone that

shall have an adjustable volume that does not affect the call speech volume.

• “Calling Dwelling.” This shall be message shall include an audio reassurance

ring tone that shall have an adjustable volume that does not affect the call

speech volume.

• “System busy” to operate if system is busy multi panel systems only.

• “Call Answered” – Speak Now

2.2.2.2 Digital Panels

Digital panels shall be used for 13 dwellings or more, accessed from a common

entrance.

The entry control panels shall comprise an audio digital display and a standard key

keypad lay out of push buttons (0-9) with separate buttons for call, cancel (either

side of the No “0” button) and tradesmen facilities. The No “5” button shall

incorporate a raised pimple to aid the blind.

The panel shall include a DDA proximity reader with a raised tactile key symbol and

shall be coloured to suit R.N.I.B. preference (yellow and black).

Numerals shall be not less than 12mm high and be colour Black.

The system shall include a “door open” audible alarm.

Panels shall incorporate a liquid crystal display (LCD) to provide user information,

including:

• Flat number called

• Include “flat calling”.

• Flat calling” Include “System busy” to operate if system is busy multi panel

systems only

Include “Speak now” to operate when a handset has been lifted in a dwelling. To

indicate to a deaf person the call has been answered.

2.2.2.3 Push Buttons

Push buttons shall be to BS316 marine grade stainless steel. They shall be pressure

sensitive, moving buttons and touch sensitive buttons shall not be acceptable.

Buttons shall seal to the panel to IP66 minimum and shall be inherently vandal

resistant and capable of withstanding heavy impact without adverse affects. Buttons

shall be flush fitted with external shoulder for a tactile feel to aid the visually

impaired to be able to locate the position of the button.

See also DDA requirements

Buttons shall be easily replaceable as part of routine maintenance.


2.2.2.4 Microphone/ Loudspeaker /Amplifier Unit

The door entry panel shall incorporate a sensitive, omni-directional microphone,

which shall be mounted in upper section of fascia plate. The speaker shall be

mounted in the upper section of the call panel, and split microphone shall be

mounted in lower section of fascia plate. The Speaker and microphone shall be

protected by holes (not slots) to prevent objects being pressed against it. Protection

shall be further enhances by a mesh infill, fixed by studs welded to rear of fascia

plate.

The microphone shall operate efficiently over a frequency range of 8 Hz to 200 Hz

with fully integrated circuitry. The microphone shall be sensitive to maintain speech

clarity/audibility over all ambient noise levels without distortion or Larsen effect.

Amplification shall be adjustable in both directions with separate controls for

adjustment of microphone and speaker levels for speech clarity/audibility in both

internal and external environments due to location of panels.

Audibility volumes shall be fully adjustable and shall be set up to ensure good

quality audibility above extraneous background/ambient noise levels at all times.

Readjustments shall be made, as appropriate, throughout the Defects Liability

Period.

2.2.2.5 Integral Proximity Access Control Reader

Each panel shall incorporate a Proximity Access Control reader into a standard

layout. The door entry panel shall be arranged to incorporate the reader without

further modifications to the standard layout.

The readers shall be flush mounted with the facia and shall be fixed by studs

welded to rear of fascia plate. They shall display the “key” symbol and shall be

raised in profile and colour yellow/black to R.N.I.B preferred scheme.

The readers shall be highly vandal resistant and ingress protected to IP 66

minimum.

The manufacturer of reader shall be of the same manufacture as the access control

controller.

2.2.2.6 General Engraving

All Engraving shall be sentence case 6mm (24 point) minimum. Operating

instructions shall be clearly and concisely engraved on the call panel and arranged

in a logical sequence.

On a functional call panel each button shall have the relevant dwelling number

engraved on the call button. Where other than straight forward, sequential

numbering is required (including letters). CityWest Homes shall approve special

layouts prior to any engraving being carried out.

On a digital call panel the numbers shall be engraved on each of the 10 No. Call

buttons. E.g. 0 to 9 inclusive


All engraving to be machine engraving in filled with enamel paint, black infill.

Block names and addresses shall be included at the top of each panel with the

relevant flat numbers included. All block names and dwellings served are to be

engraved at the top of the call panel in machine engraving in filled with enamel

paint, black infill (unless specified otherwise) in title case 6mm (24 point) minimum.

Drawings of all engraving shall be submitted for comment prior to any engraving

works being carried out. Drawing shall be submitted at least two weeks prior to

them being needed for manufacture.

2.2.2.7 DDA Requirements

The door entry system shall be DDA compliant in line with CITYWEST HOMES’

requirements for disabled access and shall comply fully with this specification. To

this end all systems shall be designed and installed to meet the requirements of

BS8300:2009 and Part M of the Building Regulations. Particular attention is drawn to

Luminous Reflectance Values (LRVs) and shall incorporate a coloured edge to the

panel to contrast between the panel and its surroundings. A suggested scheme

might be to incorporate the door colour as a coloured strip around the edge of the

panels.

The call panel shall incorporate Standard English Braille. (Grade II).

NOTE: All engraved text, wording and numbering to be confirmed and instructed by

CA. prior to any engraving works being carried out. All engraving details to be

submitted on drawings, to the CA, two weeks prior to them being need.

On functional panels Standard English Braille (grade II) shall be engraved to the left

of the call buttons level with the bottom of the call button together with the lead in

character.

The dwelling number shall be engraved above the Braille number level with the top

of the call button.

The ‘Trades’ button shall not be engraved in Braille.

Digital panels shall have a Standard English Braille dimple on the number five

(5) button with the call and cancel buttons either side of the “0” button as per the

standard keypad layout, to aid the visually impaired. All call buttons when pressed

shall emit a bleep to indicate the button has been pressed.

The contractor shall allow for engraving “CALL” & “CANCEL”

On a digital system if Braille is required and the system is an alpha system the

manufacturer shall include for Braille alpha letters.

The Contractor shall price as an option for Braille Instructions to be engraved on the

call panels for both functional and digital panels.

Buttons shall be flush fitted with external shoulder for a tactile feel to aid the


visually impaired to be able to locate the position of the button. Call buttons shall

have a milled yellow contrasting ring to contrast the stainless steel of the call

button and that of the call panel as an aid to the partially sighted.

Door entry call panels shall be mounted to BS 8300:2009+A1:2010 between 900mm

and 1100mm above FFL and as part M and BS8300:2009+A1:2010 within 200mm of

the doorframe or aperture. The Contractor shall submit details of mounting heights

and mounting arrangements on his working drawings, prior to installation.

Call panels shall be located on the latch side of the door.

2.2.2.8 Back Box

Back boxes shall be flush fitted galvanised steel, purpose made to be compatible

with the facia plate. Boxes shall be fixed using non-ferrous screws.

The back box shall be adequately and securely built in to screens where they form

part of an integrated installation.

Provide concealed conduit installation without cables entering the top of the back

box.

2.2.3 Proximity Access Control Standalone Readers.

2.2.3.1 General

These are generally installed for rear/resident only entrance doors. (RED’s)

2.2.3.2 Type

Where these are incorporated into a door screen or panel they shall be flush

mounted. Where they are incorporated into an existing scheme that is surface fixed

the ingoing readers shall also be surface mounted.

The reader shall be:

• Vandal resistant.

• Incorporating a raised yellow/black key symbol.

• Carry a lifetime guarantee

• Fixed with vandal resistant and tamperproof screws.

Readers shall be wired to the internal reader buzzer to give both audio and visual

indication on operation.

2.2.3.3 Facia Plate

The facia plate shall be 2.5mm 12SWG Stainless Steel BS 316 marine grade brushed

stainless steel plate fixed with a minimum of 4 no. vandal resistant screws.

2.2.3.4 Flush Pattern Back Box

All new installations shall be flush pattern.


The back boxes shall be flush mounted in screens or adjacent surfaces wherever

possible. All boxes shall be fixed with non-ferrous screws.

2.2.3.5 Surface Pattern Back Box

The surface pattern back box shall be stainless steel, surface pattern. Box corners

shall match the profile of reader plate for corner profiles (rounded facia plates shall

have rounded corner boxes). All boxes shall be fixed with non-ferrous screws.

Facia plates for stand alone readers shall incorporate 4 fixing screws, one in each

corner.

2.2.3.6 Mounting height

Where door entry systems are installed, they should, where practicable, be located

by the latch side of the door, either on the door face or on the adjacent wall. The

activation pad should be positioned with in 200mm of the door frame (or aperture

where there is a glazed façade),

The fob reader shall be mounted in accordance with BS8300:2009+A1:2010

between 900mm and 1100mm to FFL, but preferably between 950mm and 1000mm

as Part M.

Confirm all mounting heights with the CA prior to installing any systems.

2.2.4 Controls and Ancillaries Power Supplies

2.2.4.1 General

Positions of all control cabinets shall be planned and installed in a safe and

workmanlike manner. Positions shall be in secure, locked areas installed to allow

safe access for installation and future maintenance.

Positions shall not unduly endanger anyone working on the system, especially where

cabinets are at a height requiring the use of access equipment. Use of access equipment

must no inconvenience or endanger residents.

2.2.4.2 Cabinets

Control systems shall be designed to fit in to a single control cabinet wherever

practicable. Where this is not practicable then the number of separate cabinets shall

be kept to a minimum.

All equipment cabinets and enclosures shall be a minimum ingress protected to IP

66, generally as manufactured by Messrs Rittal or equal and approved. The cabinet

shall be securely fixed to the building structure using appropriately sized fixings

and load spreader washers as necessary. A minimum of four fixings shall be used.

All cabinets shall be suitably and adequately corrosion protected for installation in

exposed situations. All penetrations to cabinets (conduit and trunking entries) shall

have the bare metal surfaces treated with a zinc rich paint to ensure the corrosion

resistance is maintained.


Cabinet doors shall be reversible to suit the location in which they are installed and

shall open to at least 180°. Cabinet doors shall be locked with a suitably suited

security barrel lock(s). Cabinets up to 600mm high shall have two locking points.

Cabinets greater than this shall have three locking points incorporating sliding bolts

operated from a central handle. Cabinets with single locking positions shall not be

acceptable. In all cabinets, handles shall be all metal, wing handle types with

integral locks. Locks shall be provided to give maximum vandal resistance. All

handle and locking arrangements shall be agreed with the CA prior to manufacture.

The cabinet shall incorporate a removable steel chassis back plate. The cabinet,

back plate and door shall be suitably and adequately earth bonded.

All enclosures shall be fitted within a suitable lockable cupboards switchrooms or risers

wherever practicable. Where this is not practicable they shall be mounted out of general

reach in a safely accessible position. All locations of cabinets shall be agreed with the

CA prior to installation. All cabinets and enclosures shall be fitted with engraved

Traffolyte labels screwed to cabinet doors and engraved “Door Entry System. Danger

230 Volts”. They shall also be complete with the yellow and black electricity warning

“flash”.

2.2.4.3 Cable Management

Cable management within all control cabinets shall be carried out in a neat and tidy

manner enabling clear identification of components and ease of maintenance.

Sufficient space shall be incorporated around the principle control (mother) board to

allow space for incoming and outgoing wiring. Slotted PVC trunking shall be installed

around the internal perimeter of the cabinet to accommodate all the incoming and

outgoing wiring. This shall be sized to suit the system. The trunking shall be secured to

the removable back plate by non-ferrous bolts and nuts. The use of self adhesive or any

type of adhesive cable clips, ties or securing system, although widely practiced, will not

be acceptable.

Cables shall not be installed across or in front of any component unless they

connect directly to it and then the routes shall be kept as short as possible. All

spare cable lengths shall be carefully folded and tucked back into the slotted

trunking. The trunking shall be sized accordingly.

NOTE: This requirement will affect the sizing of the control cabinets and may

require suppliers to increase their standard cabinet sizes.

IMPORTANT: A typed and laminated schedule, detailing the dwellings connected the

relevant sub-distribution cabinet shall be securely fitted to the inside of the cabinet

door. Each cable shall be clearly marked, using proprietary cable ferrules, such as

by Messrs Cablecraft (Critchley) the address (number) of the dwelling served by

each cable. PVC tape and hand written labels on cable sheaths will not be

acceptable.

All holes cut into cabinets shall be drilled with proprietary drill bit or hole cutters

(tank cutters). Holes shall be bushed to adjacent cabinets or trunking as applicable.

Where holes are too large to fit a proprietary bush they shall be cleaned and a

proprietary insulated grommet strip fitted around the entire circumference. No bare

metal surfaces shall be left exposed. Grommet strips shall be sized to suit the


cabinet wall thickness. All cuts shall be corrosion treated.

2.2.4.4 Controls

The door entry control system shall comprise a modular system built up of discrete

components enabling easy replacement and repair. The whole control unit shall be

be mounted within an IP66 steel cabinet, it shall be pre-wired with plug and socket

PCB connectors on the modular circuit boards for all incoming connections.

Basic controls shall incorporate:

• a 6 amp double pole MCB or switched fused connection unit, for the

incoming mains supply

• Fused protection on input and output circuits

• Whole unit to consist of detachable modular printed circuit boards

fitted to the removable steel chassis back plate.

• Single gang 13 amp metal clad non switchable fused spur with in cabinet.

• Each circuit to be individually isolated and fuse protected.

• Complete LED status and fault indicators.

• System earthed to BS7671:2008 requirements.

2.2.4.5 Power Supply

The door entry control system shall be served from a switched mode, fully regulated

power supply control unit. The power supply unit shall provide a stabilised,

constant voltage output and shall be sized to easily accommodate the entire circuit

burden for the system.

All power supplies shall be of the Switched mode type

2.2.4.6 System Timers

As a minimum the following timers shall be incorporated:

• 0 - 60 seconds for lock release

• 0 - 60 seconds to call flats

• 0 - 90 seconds for time to call dwellings

2.2.4.7 Standby Batteries

All control systems shall incorporate a standby battery and appropriate charger.

The battery back up power supply system shall be sized to maintain both the

Controlled Entry System and Access Control system and all doors, in complete

operation, for a minimum of 8 hours on loss of main electrical supply. The

battery/charging system shall provide:

• Automatic charging with LED status indicators.

• Sealed lead acid batteries.

• Automatic changeover on loss, or restoration, of mains supplies.


Fitted with in door entry and/or access control enclosure. NOTE: Adequate

space within the cabinet shall be incorporated to accommodate the battery,

on a proprietary stand. Simply laying the battery in the bottom of the

cabinet is not acceptable.

• Charging rate set to provide the battery 13.8 volts or as appropriate and as

recommended by the battery manufacturer.

2.2.5 Sub Distribution Cabinets

2.2.5.1 Cabinets

Control systems shall be designed to fit in to a single control cabinet wherever

practicable. Where this is not practicable then the number of separate cabinets shall

be kept to a minimum.

All equipment cabinets and enclosures shall be a minimum ingress protected to IP

66, generally as manufactured by Messrs Rittal or equal and approved. The cabinet

shall be securely fixed to the building structure using appropriately sized fixings

and load spreader washers as necessary. A minimum of four fixings shall be used.

All cabinets shall be suitably and adequately corrosion protected for installation in

exposed situations. All penetrations to cabinets (conduit and trunking entries) shall

have the bare metal surfaces treated with a zinc rich paint to ensure the corrosion

resistance is maintained.

Cabinet doors shall be reversible to suit the location in which they are installed and

shall open to at least 180°. Cabinet doors shall be locked with a suitably suited

security barrel lock(s). Cabinets up to 600mm high shall have two locking points.

Cabinets greater than this shall have three locking points incorporating sliding bolts

operated from a central handle. Cabinets with single locking positions shall not be

acceptable. In all cabinets, handles shall be all metal, wing handle types with

integral locks. Locks shall be provided to give maximum vandal resistance. All

handle and locking arrangements shall be agreed with the CA prior to manufacture.

The cabinet shall incorporate a removable steel chassis back plate. The cabinet,

back plate and door shall be suitably and adequately earth bonded.

All enclosures shall be fitted within a suitable lockable cupboards switchrooms or risers

wherever practicable. Where this is not practicable they shall be mounted out of general

reach in a safely accessible position. All locations of cabinets shall be agreed with the

CA prior to installation. All cabinets and enclosures shall be fitted with engraved

Traffolyte labels screwed to cabinet doors and engraved “Door Entry System. Danger

230 Volts”. They shall also be complete with the yellow and black electricity warning

“flash”.

IMPORTANT: A typed and laminated schedule, detailing the dwellings connected the


door. Each cable shall be clearly marked, using proprietary cable ferrules, the

address (number) of the dwelling served by each cable. PVC tape and hand written

labels on cable sheaths will not be acceptable.


All holes cut into cabinets shall be drilled with proprietary drill bit or hole cutters

(tank cutters). Holes shall be bushed to adjacent cabinets or trunking as applicable.

Where holes are too large to fit a proprietary bush they shall be cleaned and a

proprietary insulated grommet strip fitted around the entire circumference. No bare

metal surfaces shall be left exposed. Grommet strips shall be sized to suit the

cabinet wall thickness.

Where cabinets are fitted in vulnerable positions in corridors and common areas, a

factory fitted hasp & staple to fit a padlock with a 10mm shackle (padlock supplied

by the client) shall be fitted to each cabinet. The hasp & staple shall be fitted to the

cabinet using a pre manufactured unit to suit the cabinet with secrete fittings and

internal fixing nuts, powered coated and painted beige to match the cabinet.

2.2.5.2 System Design

The whole unit shall consist of detachable modular printed circuit boards fitted to

removable steel chassis plates. Each circuit shall be individually isolated and fuse

protected and shall be fully isolated. This is to ensure a breakdown or failure of any

individual dwelling does not affect any other dwelling, sector or part of the system.

The system shall be designed to ensure all connections are of a plug in connector

type

The system shall incorporate LED status and fault indicators.

The system shall be designed and shall incorporate complete secrecy of

conversation so that all conversations are private.

IMPORTANT: A typed and laminated schedule’ detailing the dwellings connected the


door. Each cable shall be clearly marked, using proprietary cable ferrules, the

address (number) of the dwelling served by each cable. PVC tape and hand written

labels on cable sheaths will not be acceptable.

2.2.6 Apartment Handsets

2.2.6.1 General

In each dwelling a proprietary door entry handset, of the same manufacture as the

door entry system, shall be installed. The handset shall be manufactured from ABS

impact resistant, toughened plastic and shall be coloured white. It shall be wall

mounted and shall be easy to remove and reinstate the handset from the cradle.

The handset shall incorporate:

• Timed privacy switch and indicating LED set at 8 hours

• Large, clear and convenient to use, lock release button.

• Separate On/Off Privacy Switch with LED and adjustable time cancel facility

to switch the handset back on (adjustable 5 minutes to 8hours).

• LED indicating live Door Open/Door status

• Full Duplex Two Way Speech

• Full discrete unlocking of entry door with anti lock down circuit


• Adjustable DC sounder and ringing tones in each individual handset

• Permanent engraved or screen printed operating pictograms on telephone

handset to indicate privacy switch, lock release button and

door monitoring LED

All handsets shall be capable of accepting disabled aids, i.e. arthritic handles

hearing amplification, inductive couplers, strobe lights, extension handsets and

sounders with out the need for extra cabling entering the dwelling.

2.2.6.2 Installation

The handset shall be mounted in the vertical plane and at 1200 affl to top of

handset as per part M, BS8300:2001 and DDA requirements. Generally they will be

positioned in the hallway within 5 meters of the from the dwelling entrance door.

They should be within close proximity to lounge and kitchen and in a position

where the handset will not be damaged by moving furniture in and out of the

dwelling. They shall, however, be sited to prevent injury to user. In all installations

the Contractor shall allow for complying with any individual tenant's needs in siting

the handset, i.e. elderly or infirm tenants may require lowering of mounting height

and a different location from the norm.

If the dwelling has an existing handset the contractor shall remove it. If the new handset

position does not fully cover the position of the existing handset the contractor shall

provide a plastic plate to fully cover any residual bare areas and fixings and to obviate

the need for any re decoration. All fixings shall be by non-ferrous screws with plastic

caps to match the back plate.

2.2.6.3 User Instructions and Training

The Contractor shall demonstrate the use of the handset to each tenant. This shall

be carried out and accompanied by clear, concise, printed and laminated operating

instructions. These shall be left with the resident for future reference.

User instructions shall be carried out on a live system.

2.2.7 Fireman’s Drop Key Switch

2.2.7.1 General Requirements

A Fireman’s drop key switch shall be provided at each access controlled entrance

door and any other side/rear doors as indicated on the drawings/schedules.

The contractor shall check with the CA to ascertain whether a fireman’s drop key

switch shall be required at any other location such as rear entrance doors (RED’s).

This requirement is over and above any doors indicated on the scheme drawings.

The fireman’s switch shall be of the FS5 pattern to differentiate it from the lift

switch of similar construction. FS4 type switches shall Not be acceptable.

2.2.7.2 Construction

Fire Brigade drop key switches shall be double pole with two separate switches and

connections to provide normally open and normally closed with two separate

commons.


The Fireman switch shall comprise three separate parts.

• The back box.

• The removable switch assembly.

• The faceplate,

The arrangement is intended to enable the cables to be installed and dressed

without fowling the switch operation. The faceplate shall then be fitted after the

switch has been tested.

The fireman’s switch shall comprise a double pole override switch for the door

locks. The switch shall to momentarily disengage and cut the power to the electric

lock release or magnetic lock while the switch is operated and key is in the release

position. The switch shall also provide a timed entry when the switch is momentarily

operated.

2.2.7.3 Faceplate

The faceplate shall be manufactured from 2.5mm thick (12SWG), marine grade

stainless steel to BS 316 with a brushed or similar finish. The plate shall be fixed to

the back box with vandal resistant, tamper proof screws. The whole assembly shall

be vandal resistant.

The switch shall have a tube producing by 1mm. This shall stop the key, when being

operated scratching the faceplate.

The faceplate shall be 115 x 115mm and shall be engraved “Fire Switch”. Engraving

shall be 12mm high. Engraving shall be machine engraving and in-filled with red

enamel paint

2.2.7.4 Back Box

Where installed flush pattern, the back box shall be 120 x 120mm, flush pattern,

welded, galvanised steel box.

Fire switch shall not have conduit or cabling connected through the bottom to

prevent water running from the fireman switch box directly in to the call panel or

any other component

Where installed surface pattern (only with the express permission of the CA), the

back box shall be fully welded, 316 stainless steel and the face plate shall recess

into the box.

2.2.7.5 Installation

The drop key switch shall be mounted at high level, level with top of door and above the

call panel or reader fitted between. Generally this will be 1900mm - 2100mm above the

finished floor level. It shall be positioned directly above the door entry call panel. This is

to ensure that if the timed circuit fails, the switch can be operated whilst, single handed

opening the door.


2.2.8 Push to Exit Button (PTE)

2.2.8.1 General

A push to exit button shall be provided at each controlled door

If the switch is fitted within a side screen of the door the PTE shall be of the overlap

style. If flush fitting into the wall, the PTE shall be bezelled style.

Face plates shall be 2.5mm (12SWG) stainless steel to BS316, marine grade and

brushed or equivalent finish. The operating button shall be 25 mm diameter,

moving button and shall incorporate a coloured bezel or ring of yellow to

accommodate DDA requirements.

Switch to be double pole (isolate door by removing the supply to the magnetic lock

and activate timer). Generally with a 10 seconds delay before reset but adjustable

between 0 to 60 seconds.

The front plate to be engraved “Push To Exit”. The engraving shall be machine

finished, 10mm high, and filled with green enamel paint.

2.2.8.2 Wiring Arrangements

The switch shall be wired to break the positive feed to the lock to open the door

when the button is operated and held. This is a fail-safe method of entry. Under no

circumstance shall the negative feed be discounted to open the door.

The switch shall also be wired to provide a timed release, when the push to exit

button momentarily operates the switch.

2.2.8.3 Fixing arrangements

Flush fitted in Side Screen Stainless steel, bezelled back box to

match face plate.

Plate shall be fixed with minimum of

2 No. Vandal resistant screws

Flush fitted in Wall Stainless steel, bezelled back box to

match face plate.

Plate shall be fixed with minimum of

2 No. Vandal resistant screws

Surface Mounted on Wall Plain sided, welded, galvanized steel

back box.

Power coat finish in green if internally

mounted, or Stainless steel if externally

mounted.

Plate shall be fixed with minimum of 2 No.


Vandal resistant screws

2.2.8.4 Mounting Arrangements

Generally the PTE shall be mounted between 900 to 1200mm to underside from

finished floor level. All in compliance with BS8300:2009 & Part M.

When mounted on the side screen the PTE shall be positioned below or to the side

of the door entry call panel back box to minimise the side screen depth. Full co-

ordination of the installation shall be strictly observed.

The PTE shall be positioned so it is protected and cannot be operated or accessed

from the unsecured side of the door or gate. It cannot be reached easily by using a

coat hanger, stick or other improvised device. The position of the PTE shall enable

the door to be opened conveniently and easily, whist still retaining finger pressure

on the button.

Where the switch is fitted to a gate or close to an open, lattice or mesh screen, the

switch shall incorporate a proprietary protective cowling. The cowling shall

surround the switch to prevent the use of a coat hanger, stick or other improvised

device from being used to operate the button. Positioning of the button shall also

be considered.

2.2.8.5 Vandal Resistant Fixings

All accessible fixing screws for accessories, equipment, panels and the like shall be

vandal resistant and tamper proof. Samples shall be provided to the Project

Administrator for approval.

All conduit boxes and adaptable boxes, trunking lids and other accessories shall

have their lids and covers fixed with security screws. This shall apply to all new

components and ANY and ALL existing components, where they are re-used and

incorporated into the new scheme.

All security screws shall be stainless steel and shall be, typically:

• Socket pin head

• “Torx” pin head

• Snake eye

All security screws shall be of appropriate size and type to their application to give a

secure, ridged fixing.

At Practical Completion the Contractor shall provide two screwdrivers to the Project

Administrator for each size and type of screw installed. Only one style of screw shall

be used on each project/site. The style shall be agreed with the CA prior to any

works commencing on site.

2.2.9 Proximity Access Control

2.2.9.1 General Requirements


Each controlled entry system shall be supported by a proximity access control

system as manufactured by KMS utilising electronic fob type keys, their type

Simplekey Cloud based system (GPRS). The proximity access control system shall

also be used for all controlled access doors within the scheme that are not directly

connected to the controlled entry system. KMS details are:

Key Management Systems Ltd,

1 Marlborough Trading Estate,

High Wycombe,

Buckinghamshire,

HP11 2LB

Tel: 01494531099 or 03302230575

The KMS system shall be factory integrated with in the door entry systems and shall

be supplied by the door entry manufacturer. The installers shall not supply the

components and fit to the door entry equipment themselves.

2.2.10 Access Controllers

Access controllers shall comprise the KMS Simplekey 2 door controller in an IP66

cabinet sized in strict accordance with this specification. The systems shall

accommodate the following features as per their standard equipment:

• 1000 user (unless multiple block and access then the 10,000 user capacity

version shall be supplied).

• 3000 transactions stored locally

• Pre-programmed fobs of 3 No. per dwelling (Black, Green & Orange).

• 2 readers controlled RTE,D/C and emergency inputs monitored for each

door

• 2 programmable relays per door for door release and alarm

• RS 232 connection to control the Cloud based Simplekey Web PC (Running

Simplekey Web software linked via GPRS modems or hard wired)

• RS 485 connection for connecting up to a 20 further Simplekey controllers

(PC version only)

• Reader input compatible with weigand 26 bit, weigand 44 bit, PAC and

Easikey formats

• Non volatile memory firmware, held in flash that is upgradeable.

• Inbuilt real time clock (synchronised with Web via GPRS)

• 20 time profiles

• Inbuilt reader range up to 30 mm

• Inbuilt 16 character, 2 line LCD back light display

• Inbuilt 12 key keypad

• Working voltage 12 – 14.6 V (14.6 required for battery back up)

• Operating temperature 0 – 50'C

• Operating Humidity 5 – 95% condensation


The controllers shall incorporate the Simplekey Residential Administration package

2.2.11 GPRS Modem

Each system shall incorporate and be complete with a GPRS modem and High-Gain aerial

system. The modem shall incorporate a SIM card that will be operated and maintained

by KMS on behalf of CityWest Homes. The Contractor shall ensure the appropriate

contract is in place with KMS for the management and ongoing monitoring of the

system. The Contractor must liaise with CityWest Homes in this matter.

The Contractor shall determine the optimum position for the High-Gain aerial which

shall be external. Where a remote High-Gain aerial is used the Contractor shall

ensure any excess aerial coaxial cables are tidily enclosed out of any working areas

and is secured so it will not hinder future maintenance. High Gain aerials must be

installed in public or non secured locations and a signal strength meter shall be

used to position the aerial with results provide to the CA.

2.2.12 Electronic Key Fobs (Fobs)

2.2.12.1 General

The contractor shall employ the equipment supplier KMS to pre-program the key

fobs. The Contractor shall provide KMS with the appropriate details referring to

numbers of fobs required based on the details below:

Three tokens per flat.

• First issued fob – black 1 per flat.

• Second issued fob – orange 1 per flat.

• Third issued fob – green 1 per flat.

The fobs will be delivered pre-programmed and placed in sealed plastic bags

labelled relating to the block name and flat number and ready for issue by the

relevant Estate Office.

Exact number of fobs to be confirmed with C.A.

2.2.13 Installation and Workmanship

2.2.13.1 Pre-Installation Survey and Design

Generally door entry systems will replace existing door entry systems however in

some instances new systems or extension to existing systems will be created.

Prior to any works being started on site the Contractor shall carry out a fully

detailed survey of the existing systems in particular the location of the existing

door entry panel, control cabinets, marshalling boxes, cable and riser routes, lateral

runs and the like. Extreme care shall be exercised during the survey to note all

relevant details for the new installation.

The Contractor shall prepare detailed drawings to cover the whole of his

installation, for submission to the CA for comment. See elsewhere for details of

drawings. NOTE: The drawings shall include all ingoing doors and screens to

provide a fully coordinated scheme.


Where drawings do not exist the Contractor shall produce his own.

2.2.13.2 Coordination with Existing Services and Building Features

As with most buildings the Contractor will come across existing services within the

buildings. These services often run along the same routes and occupy the same

space required for the door entry system. This is especially relevant where a totally

new door entry system is being installed.

As part of his survey the Contractor shall take into account the presence of all

existing services and note their positions and routes and shall adapt his installation

to suit. Where the existing services obstruct the ingoing door entry system the

Contractor shall modify his system to suit. Where this proves impossible the

Contractor shall refer the matter to the CA.

The Contractor shall carefully plan the installation to ensure the ingoing system

does not impair, interfere with or affect any existing system or feature. The new

system shall not affect access to, maintenance of or repair/replacement of any

existing system, service or feature. Any such interference shall be remedied by the

Contractor, at his own expense, to the complete satisfaction of the CA.

The finished installation shall convey a coordinated and planned approach with

minimum impact on the building operation and its aesthetics.

2.2.13.3 Workmanship - General

All door entry equipment shall be installed in a logical, tidy and workmanlike

manner. The equipment shall be installed in strict accordance with manufacturer’s

recommendations and instructions.

Door entry equipment shall be fully coordinated with ingoing doors and screens and

items to be built into doors and screens shall be handed to the door specialist, in

good time, for building in. The door specialist shall be provided with all

constructional requirements for the door entry system in good time to enable the

manufacture and incorporation of rebates, mortices, cut-outs and the like.

2.2.13.4 Removal of Existing Door Entry System

The Contractor shall carry out the works diligently and in a workman like manner to

best practice.

The Contractor shall engineer his ingoing door entry system to maintain building

security for as long as is practicable. If maintaining the existing system is not

feasible the new system shall be installed in the shortest practicable time.

Existing doors and frames shall only be removed when the new doors and screen

are available for installation to minimise the time when the property has no doors.

Generally this can be kept down to the same day.


2.2.13.5 Cable Containment - General

All door entry wiring and cables shall be installed in containment along its entire

length. Containment shall comprise:

• Galvanised (Class 4) steel trunking for principle risers and laterals in

landlord areas and where exposed to the weather

• Galvanised (Class 4) steel conduits for minor risers and laterals in landlords

areas and where exposed to the weather.

• uPVC minitrunking in resident dwellings.

• Galvanised (Class 4) steel conduit and trunking in all other locations.

Cable containment shall be used in all builders and dry riser cupboards, staircases,

landings and switchrooms/intake rooms. No door entry system wiring or cables

shall be installed loose or in the open air or on cable trays or clipped to building

surfaces without the express, written consent of the CA.

New conduit and trunking shall be installed as described elsewhere in this

specification.

2.2.13.6 Existing Cable Containment

Existing conduits may be reused under certain conditions with the express

permission of the CA and where detailed in the Particular Specification. If it is to be

reused it shall be:

• Fit for purpose.

• Inspected for suitability, capacity and condition. If the condition is deemed

unacceptable in the opinion of the CA, it shall be replaced.

• Thoroughly cleaned internally and reamed if necessary.

• Securely fixed and any missing fixings, lids, gaskets, covers and the like

reinstated or renewed.

• Secured along its entire length with security screws, including all conduit

boxes, adaptable boxes and the like. Boxes with cross threaded screws shall

be replaced.

Existing trunking may be reused under certain conditions with the express

permission of the CA and where detailed in the Particular Specification. If it is to be

reused it shall be:

• Fit for purpose.

• Inspected for suitability, capacity and condition. If the condition is deemed

unacceptable in the opinion of the CA, it shall be replaced.

• Thoroughly cleaned internally if necessary.

• Securely fixed and any missing fixings, covers and lids reinstated or

renewed.

• The lid to be secured along its entire length with security screws, including


all bends, tees end caps and the like. Sections of trunking with cross

threaded screws shall be replaced as shall all missing screws. Turn buckle

lid fixings are not acceptable and shall be replaced. Self tapping screws are

expressly forbidden.

• Existing containment in dwellings shall be replaced. This will normally comprise

miniature uPVC trunking. Under exceptional circumstances this trunking may be

retained where it will unnecessarily disturb existing decoration. The trunking

shall only be retained with the CA’s consent and resident’s full

acknowledgement and consent.

2.2.13.8 New Cable Containment

Cable containment shall be installed in strict accordance with this specification.

Conduits to dwellings, run along landings and corridors, shall incorporate a BESA

box at each dwelling to accommodate that dwellings service. A short length of

conduit shall be run from the BESA box up to the outside wall (preferred) or door

frame (only if clear wall space is not available and then only with the express,

written consent of the CA). The conduit shall be installed as tight to the wall as

practicable and shall be terminated in a brass bush. (A hole shall be drilled through

the wall at this point to accommodate the service cable to the dwelling).

New trunking shall be installed in risers wherever possible. The positions shall be

determined during the Contractor survey. Where the risers are too congested the

Contractor may run the trunking in staircases, landings or corridors but subject to

the approval of the CA. The Contractor shall make every effort to utilise existing

service risers and, if rationalisation of existing services is required this shall be

carried out with the consent of the CA.

Containment within dwelling shall comprise 16x16mm, white, uPVC minitrunking as

Ega YT/1 or equal and approved. The trunking shall be installed with all proprietary

fittings and fixtures as described elsewhere.

2.2.14 Core Drilling and Hole Forming

The Contractor shall include for all core drilling of floors to ensure a clean and

adequately sized transition for the ingoing cables and containment. The Contractor shall

protect all the existing finishes, furnishing and fixtures, services cables and the like.

The Contractor shall form holes of sufficient size to accommodate the cable

containment. Stopping containment short of the core hole is not acceptable. Cables

shall be enclosed along their entire length.

The Contractor shall form or cut other holes through brickwork, blockwork and

timber, as necessary. All holes shall be properly made good and fire stopped as

appropriate to suit the surrounds.

Where holes are drilled into dwellings they shall only be drilled with the resident

being present. No holes shall be drilled into an unoccupied dwelling. Generally

holes shall be drilled from the inside of the dwelling to minimise the risk of break

out plaster. The Contractor shall ensure the risk or damage to brickwork where the

bit breaks through is minimised. If necessary, 6mm pilot holes shall be used. The

Contractor shall be responsible for all damage caused by the drilling operations and


shall remedy them at his own expense.

2.2.14.1 Fire Stopping

All holes shall be made good and fire stopped to a minimum of the surrounding

building fabric. Under no circumstances shall the fire resistance of a partition, floor,

barrier or other feature be reduced or diminished by the drilling of any hole or by

any other penetration.

The Contractor shall install intumescent fire stopping materials within the trunking

at all transitions (horizontal and vertical) through fire rated floors, walls or

partitions. The fire stopping shall comprise intumescent pads fixed to the trunking

walls. The Contractor shall take into account this space reduction when sizing the

trunking.

2.2.14.2 Cables and Wiring

Door entry systems cables shall comply with BT specification CW1308. The cables

shall comprise multi-pair twisted cores of solid, tinned, annealed copper

conductors, each 0.5mm diameter, insulated with colour-coded PVC. Overall

insulation shall be white PVC. The numbers of cores shall be selected to suit the

system function or duty and shall include 25% (minimum) spare cores as built-in

redundancy, subject to a minimum of 6 pairs. Spare cores shall be parallel

connected or tie wrapped back out of the way in accordance with the door entry

equipment supplier’s recommendations. Care shall be exercised in this respect to

prevent detrimental interference, circulating (eddy) currents, mutual inductance and

EMI effects.

Wiring for powered devices such as locks shall be single core, XL-LSOH insulated to

BS 7211.

All wiring shall be run in containment or within purpose made door/frame wireways

and the like. No wiring shall be exposed and accessible.

2.3 DOORS AND SCREENS

2.3.1 General

The configuration for all new doors and screens shall be a single door leaf only. The

clear opening width of the door shall be 1000mm wherever practicable. Where this

is not practicable, due to existing building constraints or other constraints, the

maximum width achievable will be acceptable, subject to detailed surveys and the

submission of Working Drawings.

Doors and screens shall be designed to meet the requirements of BS8300 and Part

M of the Building Regulations.

Doors and screens shall be installed on the same day as the existing doors and

screens are removed so that the block is not left without a front or rear entrance

door.

Steel doors shall be supplied by Messrs Multisteel or equal and approved.


Multisteel Ltd., MultiSteel

House, 117-119 Brent

Terrace, London.

NW2 1LL

Timber doors and screen shall be supplied by Messrs Soundcraft Ltd or equal and

approved.

SOUNDCRAFT Orchard

Building Hewitts Road

Chelsfield Orpington

Kent BR6 7QL

2.3.2 Interface with Existing Finishes

Where edges of existing floor finishes (Altro. linoleum, thermosetting tiles etc) will be

exposed by the removal of existing doors and frames and are likely to be left exposed

by the new installation a purpose made cover strip shall be installed. This shall be

designed and incorporated into the door and screen to prevent a trip hazard and to

prevent the edges of the floor finishes from lifting or being damaged. It shall be

designed to cover any substrates and to fully integrate with the ingoing door and

screen. Consideration shall be given to providing a low profile threshold strip to cover

any incomplete floor finishes.

Similar consideration shall be applied to walls and ceilings, where finishes are going

to be exposed. Alternatively a matching finish to the existing shall be applied to

eliminate any exposed, undecorated edges.

2.3.3 Existing Underfloor Door Closers

Where existing underfloor door closers are to be abandoned these shall be lifted

and removed. The floor shall be filled and made good and the position covered by a

proprietary cover which shall seamlessly integrate into the overall new door and

screen design.

2.3.4 Door Stops

Where necessary, the door shall open against a doorstop, to prevent the door being

forced open beyond 90 degrees (or manufacturers recommended limit). Options for

door stops are:

• Floor mounted, heavy duty, rubber type with two fixings into floor; only to

be used where it will not cause a trip hazard. Note: the floor mounting type

may be mounted on an adjacent wall provided it does not restrict the door

from opening fully and that door furniture does not strike the wall.

• Post mounted heavy duty rubber type with two fixings into post. Post to be

either root mounted where installed in soft ground or flange mounted

where fixed to existing hard surface.

• Door head mounted on angled arm, heavy duty, rubber type with two

fixings. This option only to be used where the other two options prove

impracticable.


The door shall open outwards or in the direction of escape, except where

circumstances will not permit. In order to comply with Building Regulations a ramp,

platform or steps may be necessary. These will be detailed in the Particular

Specification.

2.3.5 Fabrication and Constructional Details

2.3.5.1 General

Steel doors and frames, including side screens shall be manufactured to suit the

conditions on site. All steel profiles shall be manufactured to standard sizes and

thicknesses by a reputable specialist such as Janssen Ltd., Klockner RP, KMS Forster

or equal. All profiles shall be manufactured to BS EN 10025:2004. Profiles shall be a

minimum 2.0mm thick.

2.3.5.2 Materials Generally

The Contractor shall only use grades of metals, section dimensions and properties

to the appropriate British Standard. When not specified, the Contractor shall select

grades and sections appropriate for the purpose.

Fastenings shall be to the appropriate British Standard and, unless, specified

otherwise, shall be of the same metal as the component, with matching coating or

finish.

2.3.5.3 Fabrication Generally

The Contractor shall fabricate components carefully and accurately to ensure

compliance with design and performance requirements. Do not permit contact

between dissimilar metals in components which are to be fixed where moisture may

be present or occur.

Finished components shall be rigid and free from distortion, cracks, burrs and sharp

arrises. All moving parts must move freely and without binding.

Unless specified otherwise, form mitre corner junctions of identical sections.

Suitable airways shall be formed within the door and screen structure to

accommodate the door entry system wiring. Great care shall be exercised to ensure

any water penetration and condensation is not allowed to run along wires into

sensitive components.

2.3.5.4 Welding

The Contractor shall not be permitted to carry out welding on site unless express

permission is given, in writing. When it is permitted, ensure suitable, safe

conditions and do not weld when ambient temperature is below 0 degC or surfaces

are wet. The following minimum procedures shall be followed:

• Thoroughly clean surfaces to be joined.

• Ensure accurate fit of joints using clamps and jigs where practicable. Use

tack welds only for temporary attachment.


• Make joints with parent and filler metal fully bonded throughout with no

inclusions, holes, porosity or cracks.

• Remove all traces of flux residue, slag and weld spatter

• Grind down flush with parent material, all weld joints

• All welding shall be carried out using MIG techniques and to BS 4872

standards.

• Butt joints which will be visible in completed work to be smooth, flush with

adjacent surfaces

• Fillet joints which will be visible in completed work to be executed neatly.

Grind smooth where specified

2.3.5.5 Defective Works

The Contractor shall, as soon as possible after any part of the work or any materials

are known or suspected to be defective, submit proposals to CA for further testing,

inspection or replacement and obtain instructions.

2.3.5.6 Cleaning of Metalwork

The Contractor shall ensure that steel complies with BS 7079 : Part A1 at time of

blasting as follows :

• Dry blasting: initial rust grade A or B

• Wet blasting: initial rust grade A, B or C.

• All metalwork shall be thoroughly degreased and all millscale shall be

removed by chipping, grinding and/or heat treatment.

• Blast clean to the specified BS 7079: part A1 preparation grades and control

quality of preparation in accordance with BS 5493, Appendix F. Use abrasive

of suitable type and size, free from contamination by fines, water and oil

and remove abrasive residues on completion.

• Remove all surface defects likely to be detrimental to the protective painting

system, including defects in the steel, including cracks, surface laminations,

shelling and deep pitting as required by BS 4360.

• Defects resulting from fabrication, including fins at cuts, burrs, sharp edges

and weld spatter shall be removed.

2.3.5.8 Hot Dipped Galvanising

For maximum protection against corrosion all products shall be hot dip galvanized

to BS EN ISO 1461. Ensure that sufficient stoving time is allowed to meet the curing

specifications. Pre-heating of the heavier work shall be carried out to assist in

accelerating the curing process in the curing oven.

The following specification shall be followed:

• Hot dip galvanize and do not water or chromate quench

• Remove all drainage spikes and surface defects


• Powdercoat within 12 hours of galvanising. Do not get surfaces wet. Do not

leave outside

• Keep the surface clean. Do not transport uncovered loads or expose to

contaminants: diesel fumes will contaminate surface

• If surface contamination has occurred or is suspected, clean surface with

proprietary solvent/detergent designed for pre-cleaning prior to

powdercoating

• Use zinc phosphate pre-treatment for highest adhesion. Surfaces shall be

perfectly clean. (NOTE: Zinc phosphate has no detergent action and will not

remove oil or soil).

• Use iron phosphate if standard performance is required. Iron phosphate has

a slight detergent action and will remove small amounts of surface

contamination. Best used for pre-galvanised products

• Pre-heat work prior to powder application

• Use 'degassing' grade polyester powder only

• Check for correct curing by solvent testing. Adjust pre-heat and line speed

to ensure full cure.

NOTE: The Employer reserves the right to witness the powder coating and other

process at works. The Contractor shall notify the Employer, two weeks in

advance of any works being carried out to enable him and/or his nominated

representative, to attend works and witness the processes. The Employer

reserves the right to reject any or all components if he is not satisfied with

the processes witnessed.

2.4 SPECIFICATION FOR POWDER COATING OVER HOT DIP GALVANISING

2.4.1 Coating Materials

2.4.1.1 Coating Materials

All coating materials shall be applied in accordance with manufacturer’s instructions

and specifications. Coatings shall be applied in accordance with BS6497.

Whenever possible all coating materials shall be from one manufacturing batch.

Where more than one batch is to be used, keep separate, allocate to distinct parts

or areas of the work, and inform the CA accordingly.

Check that all coating materials to be used are recommended by their

manufacturers for the particular surface and conditions of exposure, and that they

are compatible with each other.

Coating materials shall be Polyester powder coat, colour to be agreed to a standard

RAL range.

The Contractor shall apply a polyester powder seal and a polyester powder coat as

recommended by the manufacturers. Curing times shall be as recommended and


appropriate to the metal temperatures. Coating thickness shall be in the range 55 –

65 microns.

The durability shall pass the BS3900 tests for flexibility, scratch and impact

resistance.

2.4.1.2 Handling and Storing Coated Steelwork

Use methods and equipment which will minimise chafing, chipping and other

damage to coated components.

Ensure and adequate drying/curing period for each coat before handling.

Use suitable packing, lashings, lifting harnesses, nylon slings, rubber protected

chains and chocks, etc.

Stack coated components clear of the ground, separated by timber chocks, and so

that ponding does not occur.

2.4.1.3 Frames and Side Screens

All the outer perimeter framework, including the main doorframe shall be

manufactured from 100mm (minimum) x 50mm (minimum) mild steel hollow box

section. NOTE Head section to be designed to accommodate a LCN 2015 closer

therefore allow for 100x100mm section. Where there is insufficient head room to

accommodate a LCN 2015 closer a LCN 2035 closer may be used and the head

section reduced accordingly but to not less than 100x50mm.

2.4.1.4 Magnetic Lock Post (Magpost)

The lock side of the door frame shall be complete with a magnetic lock post,

purpose made to accommodate the specified magnetic locks. The post shall

comprise 40 x 60mm hollow section steel section. The section shall be secured to

the frame at 600mm centres with concealed, security screws.

The magpost shall be complete with 2 no. appropriately sized cut outs to

accommodate the magnetic locks. NOTE: The magnets shall be properly and

securely aligned to ensure both magnets and armature faces are in full contact with

each other. Alignment shall not be dependent upon one or both magnets being

energised.

The magposts shall house two electromagnetic locks as Securitron type M32, 600lb

pull, 12V/24V as appropriate. The top lock shall incorporate a monitoring device for

door open monitoring. Locks shall be supplied by the door entry specialist for

building in by the door specialist.

2.4.2 Doors

2.4.2.1 Construction

Top rails, lock rails and hinge stiles shall be constructed from 100x50mm steel box

sections. The lock stile shall be constructed from 150x50mm steel box sections to


ensure the push plate is not obscured by the magpost. An overlapping or “T” bar

section shall be incorporated into the lock stile. The bar shall be formed from

folded steel “as an integral part of the lock stile. The face, top and bottom outside

edges shall be rounded.

Bottom rails shall be 200x50mm to accommodate a 150mm high kick plate. This

may be reduced to 150mm under exceptional circumstances and then only with the

express, written consent of the CA and subject to a written request

The hinge stile and hinge shall be arranged to incorporate a finger anti nip profile.

The Door shall be fitted with the two magnetic lock armatures (strike plate). The

armatures shall be fixed with a single, vandal proof, anti tamper bolt with plain,

domed head female bolt on the outside. The armature shall be complete with

packing washers, locating rolled pins all installed in strict accordance with

manufacturers instructions.

The armature shall be adjusted to ensure the door closes fully when the magnet

engages and that both magnet/armature assemblies are identical to ensure no gaps

between the closed door and the frame. Armatures shall be supplied by the door

entry specialist for building in by the door specialist

2.4.2.2 Glazing

All glass and glazing systems shall comply with the following:

'General Safety Requirement' of the General Product Safety Regulations

1994 (GPSR).

• British Standard BS 6262: Part 4: 2005

• British Standard BS 6206: 1981

• Approved Document N of the Building Regulations 2004.

Glazing shall comprise 12.5mm (minimum) laminated glass, mounted into purpose

designed recesses within the doors and screens. The glass shall be sandwiched

between two strips of proprietary glazing gasket/tape suitably mitred and formed to

fit the recess.

Glazing shall be held in place with 20x20mm (minimum) box section, single piece

glazing beads, fixed with security screws. The glazing beads shall be mitred and

welded as described elsewhere and coloured and finished to match the door and

frame.

2.4.2.3 Door Furniture

Doors shall be supplied complete with:

• 225x25mm “D” handle in 304 stainless steel on outside (pull side) fixed

through the door positioned behind the push plate.

• 300x75mm push plate in 304 stainless steel, riveted to the inside, covering

the “D” handle fixings

• 950x150mm kick plate in 304 stainless steel on both sides of the door and


riveted in place.

2.4.2.4 Hinge

Doors shall be complete with a continuous “piano” style stainless hinge. The hinge

shall be 50x1800mm (or to suit the door height) x 2.5mm thick, heavy duty version.

The hinge shall incorporate a 7mm diameter pin that shall be fixed and prevented

from dropping.

The hinge shall be fixed to the door and frame using stainless, countersunk, tamper

proof and vandal resistant screws at “not exceeding” 100mm hole centres.

The hinge shall be arranged on the edge of the door to provide an anti finger nip

arrangement.

2.4.3 Closers and Operators

2.4.3.1 Manual Door Closer

All doors/screens shall be designed to accommodate a recessed door closer. Door

closers shall comprise:

• LCN 2015 where space permits

• LCN 2035 where head height is restricted. This option will only be available

with the express, written permission of the CA. or where detailed in the

Particular Specification.

All closers shall be fitted with the integral slide stop for good measure.

Closers shall be adjusted to suit the prevailing conditions and an optimum

adjustment shall be established to accommodate resident requirements

(elderly and frail) and wind resistance. The Contractor shall allow for several

adjustments to be made, at different times, during and after Practical

Completion.

2.4.3.2 Automatic Door operators

Where detailed in the Particular Specification, the Contractor shall install automatic

door operators. The operators shall be suitable for swing doors up to 1400mm wide

and weighing 250kg. The automatic door operator shall provide the following

adjustments:

• Opening speed

• Closing speed

• Closing force

• Latching action

• Hold Open Time

• Door opening angle

The operator shall be fully integrated into new, ingoing door/frame sets and shall


be incorporated into existing door and frame sets on existing installations.

The closer/door arrangement shall be complete with active infra red sensor strips to

provide safety within the door swing arc. The door shall be activated by either a

push paddle or RTE switch or a combination of both as detailed.

A door operator by Messrs GEZE their type TAS 160 or equal and approved will be

acceptable.

GEZE UK Ltd.,

Blenheim Way,

Fradley Park,

Lichfield,

Staffordshire. WS13

8SY

The whole installation shall comply with BS 7036 Safety at Powered Doors for

Pedestrian use.

2.4.4 Installation and Workmanship

2.4.4.1 Pre-Installation Survey and Design

Generally new doors and screens will replace existing doors and screens however in

some instances new positions for doors and screen will be created.

Prior to any works being started on site the Contractor shall carry out a fully

detailed survey of the existing doors and screens and in particular the location of

the existing doors and screens. Extreme care shall be exercised during the survey to

note all relevant details for the new installation. These details shall include, but not

be restricted to:

• Size and width of opening.

• Floor, wall and ceiling finishes.

• Floor, wall and ceiling structure/materials.

• Floor coverings.

• Positions of existing lighting, especially surface fixed luminaires.

• Positions of existing services, features, fixtures and fittings.

• Door handing/opening direction.

• Door location within screen (left, centre, right).

• Existing mat wells and other floor features.

• Existing steps, ramps and other changes in direction.

• Proximity of existing walls and doors and other building features.

The Contractor shall prepare fully detailed drawings to cover the whole of his

installation, for submission to the CA for comment. See elsewhere for details of

drawings.

NOTE: The drawings must include the surrounding area to at least 3m each side of


the entrance and above the entrance to provide a true representation of the door

installation environment. The drawings must include all relevant features, as listed

above and including windows and glazing, signs, street furniture and the like.

2.4.4.2 Removal of Existing Doors and Screens

The Contractor shall carry out the works diligently and in a workman like manner to

best practice.

Where existing doors and frames are to be removed the Contractor shall carefully

dismantle, cut up and remove them. Great care shall be taken to remove glazing

without breaking it and storing it carefully and safely prior to its removal from site.

Where doors and screens have been “painted in” the paint seal shall be carefully cut

prior to the removal to minimize the damage to the existing finishes. Any

unnecessary damage to existing finishes will be corrected by the Contractor at his

own expense. This will include repainting or refinishing complete elevations as

necessary and to the satisfaction of the CA.

Existing, below ground door closers shall be completely removed, including the

inbuilt box and the hole made good to match the surrounding area. The Contractor

shall provide a suitably sized cover plate or cover strip to completely cover the old

position. This strip could be incorporated into a threshold or other feature as

appropriate. Where edges of floor finishes (Altro vinyl, linoleum, thermosetting tiles

and the like) are likely to be left expose by the new installation a purpose made

cover strip shall be installed to prevent a trip hazard and to prevent the edges of

the floor finish lifting or being damaged.

All original lines of sealant shall be removed from building surfaces using

proprietary solvents and cleaners as necessary.

2.4.4.3 Workmanship and Setting Out

The Contractor shall be responsible for the setting out of the new doors and frames.

Details of setting out shall be submitted on working drawings prior to works

commencing on site.

When setting out the new doors and screens the Contractor shall ensure gaps

between existing walls, ceilings, floors and other building features, services and the

like are kept to a practicable minimum and , in any case, to a gap not exceeding

8mm on either side of the frame. Gaps exceeding 8mm between the new screen and

the original building surface or feature will not be accepted. The Contractor shall

apply a waterproof sealant to joints between steel frame and existing building

surface, feature, colour matched to the doors and frames. Under no circumstances

shall sealant be used for gaps greater than 8mm.

Where existing doors and frames have been removed and the ingoing doors and frames

do not cover entirely, the original location and fixings the Contractor shall supply a

purpose made cover strip or bead. The cover strip or bead will completely obscure the

original fixing location. The colour of the strip or bead shall match the colour of the

doors and screens. Where an exposed strip is left on the floor a proprietary cover strip

shall be fixed over it, which may form part of the threshold. This shall be self coloured


aluminium and shall be installed to prevent creating a trip hazard (described elsewhere).

Frame fixings to surrounding masonry shall be by means of frame anchors at

600mm centres. Suitably sized, steel shims shall be used to ensure the frames are

not distorted by the fixing method and to ensure the frames are securely fixed

against the building surface to offer maximum resistance to impact to maximise

vandal resistance.

Around the internal and external perimeters of the screen/ frame, the Contractor

shall fix steel, powder coated trims where gaps are greater than 6mm between the

new frames and existing building finishes Where gaps are 6mm or less the

Contractor shall apply a waterproof sealant to joints between steel and masonry,

colour matched to the doors and frames. Under no circumstances shall sealant be

used for gaps greater than 8mm.

2.4.4.4 Fixings

General fixings are described elsewhere in the specification.

New doors/frames/screens shall be securely fixed to the building structure to avoid

any disturbance by any means with suitable frame anchors. All fixing holes to be

pelleted or plugged with self coloured, matching caps.

2.4.4.5 Adaptations to Existing Doors and Screens

In cases where existing doors and screens are to be retained but are to accept new

door entry equipment the Contractor shall make appropriate adaptations. Unless

otherwise specified, the Contractor shall select equipment that most closely

matches the existing equipment, from the CityWest Homes select list. This is

generally by Messrs Select Manufacturing, Videx Security Ltd or Neon Secure Access

Ltd or as detailed in the Particular Specification.

Where the new equipment is of a different size or configuration to that of the

existing equipment, the Contractor shall adapt the existing door and frame to suit.

Options include:

Existing openings too small for the new, ingoing equipment.

• Contractor shall carefully enlarge the existing openings involving the

manufacturer of the original door/screen or a specialist in this field, as

appropriate.

• Extreme care shall be exercised to prevent damage to surrounding finishes

and paintwork, brickwork and the like

• All metal cut edges shall be treated with a zinc rich paint and an

appropriately colour matched paint shall be applied to prevent corrosion.

The Contractor shall ensure that all site cut edges are concealed by the new

installation.

• Any cutting of brickwork shall be carried out with a suitable disc cutter.

Existing openings too large for the new, ingoing equipment or inappropriately

positioned.


Contractor shall install an appropriately sized, 316 stainless steel plate

designed around the new equipment and the existing location. The plate

shall be manufactured by the door entry equipment specialist and shall be

integrated into the design. The plate shall have a textured or brushed finish

to minimise nuisance reflectance and shall be engraved to incorporate a

description of the block and shall include such details as building name,

address, numbers of flats and the like. Exact engraving and finish details to

be agreed with the CA.

• Where the openings are formed in timber screens the Contractor shall

provide new timber sections to match the existing door and screen

arrangement.

• All fixings shall be anti tamper to suit the layout.

2.4.5 Functional Test

The Contractor shall carry out detailed functional tests on all components and

apparatus as follows:

2.4.5.1 Door Entry System

• Functional test on all handsets to check operation of handset, duplex

speech paths, lock release, privacy function and door open alarm.

• 10% of all fobs to be issued.

• Lock release times and adjust as required/instructed.

• Privacy times and adjust as required/instructed.

• Trades button times and adjust as required and instructed. (Normally 08:00

to 12:00 but can vary between blocks or can be set at zero)

• Door open alarm and adjust as required/instructed.

• Audibility of call tones and adjust as required/instructed

• Audibility of speech at handsets and at main entrance doors and adjust as

required/instructed. NOTE: Audibility must be set up to be acceptable both

during the day and during the quiet of the night. Allow at least three

separate visits to make suitable adjustments.

2.4.5.2 Automatic Door Operator

• Automatic door operator open function and adjust as required and

instructed.

• Door open dwell time and adjust as required and instructed.

• Door sensor function and adjust as required and instructed.

• Door push-pad operation and adjust as required and instructed.

• Door manual open function and adjust as required and instructed.


2.4.5.3 Door Closer

• Door opening force and adjust as required and instructed.

• Door closing force and adjust as required and instructed.

• Door closing time and adjust as required and instructed.

2.5 ELECTRICAL INSTALLATION STANDARDS

2.5.1 Conduit and Trunking

2.5.1.1 Standards:

Provide conduit and cable trunking in accordance with the latest versions of the

relevant British Standards and in particular the requirements of BS 7671:2008

Requirements for Electrical Installations (The IET (IEE) Wiring Regulations).

Allow 25% spare capacity in all forms of cable containment and cable management.

2.5.1.2 Conduit Systems Metal Rigid Class 4:

Provide conduit systems to BS EN 50086. Use conduit of each type from one

manufacturer.

Material - Metal, steel.

Method of connection - Threadable.

Suitability for bending - Rigid, BS EN 50086-2-1. Electrical

characteristics - with electrical continuity. Resistance

against corrosive or polluting substances Conduits with

same protection outside and inside High protection - Hot

dip zinc coating.

2.5.1.3 Rigid Conduit System - Metallic Conduit:

Use only Class 4 galvanised steel conduits.

Use couplers to match conduit grade and finish. Use

solid couplers to join lengths of conduit.

2.5.1.4 Conduit fittings and adaptable boxes

Material - Malleable iron adaptable boxes.

Do not use factory made bends, inspection bends or inspection couplers unless

shown on drawings or schedules.


Ensure fittings are same class and finish as associated conduit system.

Supply covers for circular or adaptable boxes in the same material and finish as

boxes.

Use stainless steel security screws to secure covers for Class 4 finish. Limit

number of entry holes within loop-in boxes to four.

Adaptable box, minimum size - 100mm x 100mm x 50mm.

Connections: Use couplers and externally screwed brass bushes to connect conduit

to loop-in circular conduit boxes, switchgear, distribution boards, and adaptable

boxes. Use solid couplers.

Conduit fixing saddles - Spacer bar.

Plugs - Hexagonal malleable iron.

Locknuts - Hexagonal steel.

2.5.1.5 Cable Trunking and Fittings:

Comply with BS 4678. Use trunking of each type from one manufacturer.

2.5.1.6 Metal Trunking - Factory Painted Finish:

Material: Steel trunking to BS 4678-1. Supply partitions and covers same material as

trunking.

Gauge of metal - Table 1 BS 4678.

Style: Use trunking manufactured with inward return edge flanges and fitted with flange

couplers which ensure that when the cover is removed a minimum of 80% of the

nominal trunking or compartment width is available for access.

Protection to BS 4678-1

Electroplated zinc having a minimum thickness of zinc coating of 0.0012mm inside

and outside with additional coating of stoved or air drying paint, applied at least to

the external surface.

Finish - Manufacturer's standard, all surfaces.

Colour: Manufacturer's standard or to BS 4800 Shade as approved.

Fixings: Use purpose made brackets to fix to structural steel or suspension rods.

Provide external fixing lugs where specified protection for the installation is IP44 or

greater.

Fittings: Use bends, tees and angles of similar gauge, type and finish as trunking

body and supplied by same manufacturer.


Partitions and Covers

Ensure partitions are electrically continuous with the body of the trunking or

provide a connector for a circuit protective conductor.

Ensure gap between partitions and lids maintains segregation of circuits.

Material - Same material as trunking.

Joints: Use purpose made jointing pieces fixed with screws into captive nuts. Ensure

screws do not protrude through the nuts.

Ensure rigidity of trunking is maintained across joint.

Ensure external dimensions of trunking are maintained and not reduced by more

than 4% across joints between trunking lengths and/or fittings. Use purpose made

fittings of the same manufacture where trunking connects to switchgear and

distribution boards.

Provide flanges for connection of flush floor trunking to vertical trunking to

maintain the cross sectional area of compartments with 50 mm minimum radius.

Maintain electrical continuity at each joint by a copper link, (tinned copper for

galvanized trunking), fixed on outside of trunking, secured by screws, nuts and

shakeproof washers. Screws must not project through the nut. Make provision for

continuity to be achieved without need to remove paint from ferrous metal where

trunking has a painted finish.

Screws, Nuts, Washers

Do not use self tapping screws. Use cheese or round head screws except where

provision is made for the use of counter-sunk heads.

Material: Use steel zinc coated BS 3382-1 and BS 3382-2.

Cable supports: Provide horizontal trunking with removable cable retainers or

bridges to retain cables in situ.

Provide vertical trunking with pin racks to support cables at 3000 mm maximum

spacing.

Use insulated pins or insulation sleeved pins on pin racks.

2.5.1.7 Metal Surface Trunking - Zinc Finish:

Material: Steel trunking to BS 4678-1. Supply partitions and covers same material as

trunking.

Gauge of metal - Table 1 BS 4678.

Trunking type: Standard cable trunking with compartments.


Style: Use trunking manufactured with inward return edge flanges and fitted with flange

couplers which ensure that when the cover is removed a minimum of 80% of the

nominal trunking or compartment width is available for access.

Protection to BS 4678-1

Electroplated zinc having a minimum thickness of zinc coating of 0.0012mm inside

and outside.

Hot dip zinc coated steel to BS EN 10142 or BSEN 10143 and BS EN 10147.

Finish - Manufacturer's standard, all surfaces.

Colour - Self Colour or Manufacturer's standard.

Fixings: Use purpose made brackets to fix to structural steel or suspension

rods.

Provide external fixing lugs where specified protection for the installation is IP44 or

greater.

Fittings: Use bends, tees and angles of similar gauge, type and finish as trunking

body and supplied by same manufacturer.

Partitions and Covers: Ensure partitions are electrically continuous with the body of the

trunking or provide a connector for a circuit protective conductor.

Ensure gap between partitions and lids maintains segregation of circuits.

Provide individual mounting plates for each accessory mounted on trunking covers.

Material - Same material as trunking.

Joints: Use purpose made jointing pieces fixed with screws into captive nuts. Ensure

screws do not protrude through the nuts.

Ensure rigidity of trunking is maintained across joint.

Ensure external dimensions of trunking are maintained and not reduced by more

than 4% across joints between trunking lengths and/or fittings.

Use purpose made fittings of the same manufacture where trunking connects to

switchgear and distribution boards.

Provide flanges for connection of flush floor trunking to vertical trunking to

maintain the cross sectional area of compartments with 50 mm minimum radius.

Maintain electrical continuity at each joint by a copper link, (tinned copper for

galvanized trunking), fixed on outside of trunking, secured by screws, nuts and

shakeproof washers. Screws must not project through the nut. Make provision for

continuity to be achieved without need to remove paint from ferrous metal where

trunking has a painted finish.


Screws, Nuts, Washers: Do not use self tapping screws. Use cheese or round head

screws except where provision is made for the use of counter-sunk heads.

Material: Use steel zinc coated BS 3382-1 and BS 3382-2.

Cable supports: Provide horizontal trunking with removable cable retainers or

bridges to retain cables in situ.

Provide vertical trunking with pin racks to support cables at 3000 mm maximum

spacing.

Use insulated pins or insulation sleeved pins on pin racks.

2.5.2 Supports and Fixings:

Provide proprietary suspension systems comprising channel sections with return

lips and compatible fixing accessories made of material to BS EN 10162, BS EN

10210 and/or slotted angles to BS 4345.

Ensure support components for Class 4 conduit have the same finishing method as

the conduit carried out after manufacture. Ensure components in direct contact with

conduit match profile of conduit.

Ensure all steel components such as studding, bolts and steel screws, bolts, nuts

and washers are either cadmium plated and passivated or zinc electroplated to BS

3382 after manufacture. Do not use metal fixing components likely to deteriorate

and/or cause damage through electrolytic action.

2.5.2.1 General:

Ensure entire system is electrically and/or mechanically continuous, to BS

7671:2008:2008.

Fire barriers: Comply with the requirements of BS 7671:2008:2008 wherever the

conduit or trunking passes through the perimeter of a fire compartment (wall, floor

or ceiling).

Appearance: Arrange conduit, trunking and ducting to present neat appearance, parallel

with other service runs and lines of building construction, except where in screed or in-

situ concrete. Ensure plumb vertical runs.

Cable installation: Install cable in conduit, trunking or equipment enclosures only

when completely erected throughout its length.

Do not use framework of partitions or similar unless indicated.

Building expansion and settlement: Make provision in conduit and trunking at

expansion and settlement joints to allow for movement of building structure.

Provide circular through or adaptable boxes no more than 300 mm either side of

expansion or settlement joints for conduit crossing.

Join boxes with flexible steel conduit type C or conduits arranged to form a

telescopic joint and cover overall with PVC sleeve to provide minimum degree of


protection of IP44 or purpose made telescopic joint protected by a PVC sleeve to at

least IP44.

Quality: Cut conduit clean and square with axis. Remove any burrs prior to erection.

Site form 90o

in conduit wherever practical or use circular or adaptable boxes.

Construct bends and sets cold with a bending machine. Do not apply heat when

forming sets or bends.

Use bending tools complying with British Standards appropriate to conduit material.

Ensure no indentation or reduction in cross sectional area occurs during installation.

Use correct tools to assemble conduit. Ensure no tool marks or damage to

components occurs.

2.5.2.2 Layout:

Ensure the maximum circuit lengths and groupings of cables indicated are not

exceeded.

Conduit sizing: Where dimensions are not indicated select trunking and conduit

sizes in accordance with Appendix A of Guidance Note I Selection and Erection

published by the IET (IEE).

2.5.2.3 Spacing:

Install conduit, trunking and equipment clear of other services. Measure distance

from external surface of any thermal insulation. Notify instances where minimum

clearance cannot be achieved and bond items concerned. Minimum general

spacings between conduits, trunking, equipment and

insulated steam services - 300 mm.

other services excluding steam - 150 mm. above

central heating radiators - 1000 mm.

Ensure separation is in accordance with Appendix I of Guidance Note I Selection and

Erection published by the IET (IEE).

2.5.2.4 Condensation Prevention:

Install conduit and trunking systems to ensure internal condensation does not affect

operation of associated circuits. Provide drainage points in accordance with BS

7671:2008.

Where conduit passes through external wall between two areas of different ambient

temperatures or in other locations likely to cause condensation, install a conduit or

adaptable box. After wiring fill box with inert, permanently plastic compound with

high insulation value.


2.5.2.5 Protection and Repair of Steel Components:

Paint joints of conduit and minor damages to finish of conduit and trunking

immediately after erection or after damage occurs.

Use paint compatible with finish as follows Galvanized

finish, use two coats zinc rich paint.

Black enamelled finish, use two coats of good quality, air drying, black enamel

paint.

Remove grease, oil, dirt and rust before applying protective paint.

Notify serious damage and repair or replace as instructed.

2.5.2.6 Equipment Connections:

Where surface mounted equipment is installed in conjunction with concealed

conduit work, terminate concealed conduit at flush mounted conduit or adaptable

box. Drill back of equipment, bush for back entry and mount equipment to conceal

back box.

Connect to fixed equipment via conduit box located adjacent to termination point,

using either solid or flexible conduit as indicated for final connection to equipment

terminations.

Use conduit box as cable change point to facilitate changed wiring locally to

adjacent equipment.

Connect trunking to equipment by specially fabricated connectors or by couplers

and externally screwed brass bushes.

2.5.2.7 Cleaning Before Wiring:

Clean inside of conduits and trunking with swabs immediately before wiring.

Inspect all components and remove any foreign matter, fit temporary plugs to open

ends of conduit and trunking to prevent ingress of water and solid material.

2.5.2.8 Wiring:

Comply with BS 7671:2008 when wiring installations.

Segregate circuits as indicated.

Ensure draw wires are left within empty conduits for use of specialist installers. Use

draw wires comprising nylon tapes with fitted eyelets.

For concealed conduit ensure system is installed to enable re-wiring to be carried

out from boxes for fittings or accessories only. Draw-in boxes will only be permitted

with prior permission in writing.


Do not use tallow or any other substances to facilitate drawing-in of cables.

2.5.2.9 Builders Work:

Ensure conduit is not concealed until work has been inspected and approved.

Obtain permission before horizontally chasing walls.

Ensure that conduit and fittings buried in concrete or behind plaster are protected

against corrosion or electrolytic action prior to rendering.

Ensure conduit concealed in wall chases is covered by plaster and/or rendering to

minimum depth of 12 mm.

2.5.2.10 Redecoration

The Contractor shall include for redecoration of surrounding areas affected by the

works. This shall include walls, ceilings and floor where doors and screens have

been replaced, trunking, risers, panels, boxing and the like where these have been

disturbed by his works.

Generally, and unless specified otherwise the Contractor shall redecorate the

elevation affected by the ingoing doors and frames to the nearest, full height (floor

to ceiling), change in direction.

The Contractor shall match, as closely as practicable, the existing colours, textures

and finishes of decoration. Where this is not possible the Contractor shall agree an

alternative colour and finish to be applied.

2.5.2.11 Draw-In Boxes:

Provide draw- in boxes in conduit at maximum intervals of 10 metres or after bends

and/or sets totalling 180 degrees.

2.5.2.12 Installation of Cast In or Buried Conduit:

Ensure cast-in conduits are firmly secured to reinforcing steelwork and that

accessory and/or conduit boxes are secured so they do not move during

subsequent building operations.

Ensure there is no blockage immediately shuttering is removed.

Check there is no mechanical damage to conduit in floor screed prior to screeding.

Fix securely before screed is poured. Provide temporary protection to conduits until

screeds are laid.

Ensure minimum amount of cross-overs occur dependent upon screed depth. Do

not install draw boxes in floors.

Do not install conduits:

in screeds in areas indicated.


within site blinding.

in main structural slabs unless prior permission in writing is obtained.

2.5.2.13 Conduit Boxes:

Ensure that wherever conduit boxes are cast in the face of the box is flush with the

face of the concrete or plaster. Fit circular conduit boxes with extension rings to

ensure a flush face with plaster or concrete or where terminal blocks are to be

accommodated.

Ensure fixing holes are countersunk where material thickness allows or use round

head screws to prevent damage to cables and remove burrs before cables are drawn

in.

Use a minimum of two screw fixing for standard circular conduit boxes and four

screws for large conduit boxes and adaptable boxes up to 150 mm x 100 mm.

Use back outlet boxes where surface conduits pass through walls, to outside

accessories or lighting points.

Secure switch boxes and socket boxes using countersunk steel screws where

provision is made for them or if not use round head screws. Use plug inserts and

finally grout in position prior to plastering or screeding.

2.5.2.14 Fixing Conduit:

Support conduit in accordance with Appendix G of Guidance Note I Selection and

Erection published by the IET (IEE).

Ensure conduit is not under mechanical stress. Fix conduit boxes independently of

conduit. Make allowance for any additional mechanical loading supported by

conduit boxes.

Where protection is specified as IP44 or greater ensure fixings of conduit boxes are

suitable to maintain degree of protection.

Use following methods of fixing conduit:-

LOCATION TYPE OF FIXING

Floor Screeds Saddles or Crampets

Buried in plaster Crampets or saddles

Above false ceilings Saddles

Surface saddles

2.5.2.15 Flexible and Pliable Conduit:

Use flexible conduit for final connections to motors, other equipment subject to


vibration or adjustment and to thermostats, motorised valves and similar items

mounted in pipelines or ducts.

Use sufficient length between equipment and circular through box at end of conduit

run (minimum 450 mm) to allow necessary full range of withdrawal, adjustment or

movement.

Use solid type adapters to terminate flexible conduit.

Use PVC covered flexible conduit where installed externally, exposed to weather or

in any position where ingress of moisture or condensation may occur.

2.5.2.16 Screwed Steel Conduit:

Use materials clean and free from defects, rust, scale and oil. Obtain prior

permission in writing for use of materials subject to remedial work before erection.

Repair any damage caused by threading, bending or erection by painting with zinc

rich paint before any rust occurs.

Ensure length of thread on conduit matches that in conduit couplers, fittings or

equipment with no thread exposed after erection except at running couplers.

Ensure conduits butt inside couplers.

Use lubricant when cutting threads.

Use minimum number of running couplings

For running couplings in Class 2 conduit, use coupler and locknut. Paint exposed

thread with zinc rich paint.

For running couplings in Class 4 conduit, use three piece conduit unions.

2.5.2.17 Underground Installation:

Where buried below ground, use Class 4 conduit. Do not use any buried conduit

boxes unless prior permission in writing has been obtained. Wrap conduit with PVC

self-adhesive tape, half lapped. Extend taping 150 mm beyond point where conduit

leaves ground. Install circular through conduit boxes at the end of the tape. Fill

conduit boxes after cable installation with inert, permanently plastic compound with

high insulation value, and wrap in PVC self adhesive tape.

2.5.2.18 Manufacture of Trunking:

Take measurements on site before producing drawings for manufacture of trunking.

2.5.2.19 Access:

Arrange trunking to allow access to wiring. Locate covers on top or sides of

trunking if practicable. Arrange access so covers are on a continuous face and

cables can be laid in throughout the length of the trunking. Notify where either

condition cannot be achieved.


2.5.2.20 Fixing Trunking:

Ensure trunking is independently fixed and supported from building fabric. Obtain

approval for proposed fixings/supports.

Support trunking in accordance with the manufacturer’s requirements and/or

Guidance Note 1 Selection and Erection published by the IET (IEE).

Use two fixings minimum per standard length.

2.5.2.21 Steel Trunking:

Install steel trunking in accordance with the manufacturer’s requirements and those

of BS 7671:2008.

Use trunking to avoid multiple parallel conduit runs, subject to approval.

Cut trunking clean and square with axis, prepare ends and remove burrs and sharp

edges. Ensure inside of trunking is free from anything liable to damage cables

either during installation or after covers are fitted.

When trunking is held in a vice, ensure surfaces remain undamaged and

components are not warped.

Avoid tool marking or damage to trunking system components.

Do not site fabricate trunking tees, bends, flanges and other accessories. Use only

factory made accessories.

Form circular holes over 6 mm diameter in trunking body using correctly sized

punch sets. Use twist drill for holes up to 6 mm maximum diameter.

Use only factory formed openings for accessories.

Line unprotected apertures in trunking with PVC or nylon edging strip.

Fit ends of runs with removable blanking plates.

Ensure connections are not made to covers unless indicated or approval obtained.

Provide fixed section of cover projecting 25 mm either side of fabric where trunking

passes through wall, floors or ceiling.

Fit cable retaining straps at 500 mm intervals except where cover is on top.

2.5.3 LV Cables and Wiring

2.5.3.1 Cable Manufacture:

Use new cables, delivered to site with seals intact, manufactured not more than one year

prior to delivery, labelled with manufacturer's name, size, description, BS number,

classification, length, grade and date of manufacture.


2.5.3.2 Cable Certification Marking:

Mark all types of cables with European Committee for Electrotechnical

Standardization (known as CENELEC) cable certification marking or if included in

British Approvals Service for Cables (BASEC) in accordance with BASEC regulations.

2.5.3.3 LSOH Sheathing:

Supply and use only cables with Low Smoke Zero Halogen (LSOH) sheathing, tested

in accordance with BS EN 50267 and BS EN 50265.

2.5.3.4 Standard Ordinary Flexible Wires - Single Copper Core:

Standard - BS 6004, Table 4(b), 5 and 12.

2.5.3.5 Standard LSOH Flexible Wires - Single Copper Core:

Standard - BS 7211, Tables 3(b) and 4(b).

2.5.3.6 Standard Heat Resisting (95 Degrees Centigrade or More) Flexible Wires -

Single Copper Core:

Standard - BS 6004, Table 11(b); BS 6007, Tables 5, 8, and 10.

2.5.3.7 Standard Ordinary Flexible Cords - Multi Copper Cores:

Standard - BS 6500, Tables 12 and 13,16 and 18; BS 7919 Tables 10 and 14.

2.5.3.8 Standard HOFR Flexible Cords - Multi Copper Cores:

Standard - BS 6007, Table 5; BS 6500, Table 16.

2.5.3.9 Standard Power Supply Cables, Copper Conductors, Thermosetting

Insulation, Sheathed:

Standard - BS 5467, Tables 4, 6, 8, 10 and 12.

Mechanical protection - Unarmoured.

2.5.3.10 Standard Cables For Conduit and Trunking, Copper Conductors,

LSOH Insulated:

Standard - BS 7211, Tables 3(a) and 4(a).

Mechanical protection - Conduit and trunking.

2.5.3.11 Cables Glands - Unarmoured Cables, Indoors:

Cable type: Flexible; wiring and power; control and auxiliary; and

communications.

Standard - BS EN 50262, A1; BS 6121-2, A1P.

Environment - Indoor.


2.5.3.12 LSOH Insulating Tape:

Standard - BS 3924, LSOH material.

2.5.3.13 Cable Sleeves:

Supply and hand to others for installation non ferrous cable sleeves for

incorporation into the structure where cables pass through fire compartment floors

and walls.

Packing material: Weak mix mortar; intumescent, plaster or mastic; solid

intumescent material; or intumescent granule filled bags.

2.5.3.14 Cable Covers and Markers:

Material - Recovered plastic, integral tape.

Marking - Electricity or telephone.

Plastic marker tape: Yellow, marked electricity or telephone.

2.5.4 Cable Installation - General

Use and install cables only as directed in the appropriate standard or as directed by the

manufacturer in writing. Lay cables in one length unless otherwise indicated. Obtain

permission from supervising officer for all through joints, and where overall length

requirement exceeds practical drum size.

Install cables when ambient temperature is 5o

C or greater, using cables stored at or

above this temperature for not less than 24 hours.

Use drum stands, drum axles, fair leads, rollers, cable stockings and other

equipment as recommended by the cable manufacturer and as appropriate to the

method of installation.

Cables shall generally be installed along the routes indicated and shall be installed

in accordance with good practice as laid down by the cable manufacturers.

Cables shall not be run out or installed when temperatures are 0 degree or below.

Minimum bending radii, as indicated in the IET (IEE) Regulations shall be strictly

observed.

Single core cables shall be run in trefoil formation. Where this formation is

abandoned below the switchgear, the lead sheaths shall be exposed bonded

together with a copper bond wiped on to the cable sheaths and earthed at this point

only.

Where cables are installed in service ducts or on wall surfaces, they shall be

adequately supported on approved cable hangers, or cleats at spacings not greater

than 60mm. The cable hangers shall be designed to give support without damage

to the cable.

Low voltage cables laid in trenches shall be laid to a minimum depth of 600mm


blinded with sand to a radial thickness of 100mm covered and protected by

interlocking cables tiles 75mm clear and projecting 75mm beyond outer cables in

the trench. The tiles shall be covered by 300mm of hand placed selected backfill

well compacted. A continuous strip of plastic marker tape shall be run above this

layer so as to adequately cover the cables. The tapes shall be run above this layer so

as to adequately cover the cables. The tape shall be deemed to have been included

in the Tender costs, whenever cables are used in such circumstances. Cutting of

excavations blinding with sand and backfilling will be carried out by the Contractor.

Low voltage cable laid under road ways and other prepared surfaces shall be laid to

a minimum depth of 750mm installed in glazed earthenware or other approved

pipes, having a nominal MINIMUM internal diameter of 100mm and having self-

aligning water tight joints. Pipes shall be surrounded by 75mm of concrete and

interlocking cable tiles shall be laid over the concrete. Cutting of excavations,

supplying and laying of pipes and backfilling will be carried out by the Contractor.

After cables have been pulled through, the ends of all pipes including spare ways

shall be sealed by the Contractor. Cables entering buildings below ground level

shall have watertight seals.

Where cables are laid in open ground they shall be located by indestructible cable

markers placed at not more than 22.5 metre intervals and at points where the cable

changes direction. Elsewhere cable markers shall be attached to permanent walls in

positions to be agreed by the Engineer,. All markers shall give sufficient information

to locate the position of the cable.

Where cables rise above ground or floor level in other areas they shall be protected

to a height of not less than 1800mm above that level by a heavy gauge, galvanised

metal channel firmly secured to the wall by sheradised holdfasts.

High voltage cables shall be laid to a minimum depth of 900mm in trenches or

under roadways and paved areas.

2.5.4.1 Cable Installation in Low Temperatures:

Install cables at lower installation temperatures when authorised by manufacturer in

a written statement.

2.5.4.2 Installation of LSOH Cable:

Install LSOH cables in accordance with manufacturer's instructions. Ensure ambient

temperature is above 5o

C. Ensure oversheaths are not damaged by abrasion or

scuffing.

2.5.4.3 Installation of Unarmoured Cables:

Install and use unarmoured cable to BS 6004, BS 6007, BS 6500, BS 7211 and BS

7919 in accordance with BS 7540 or the manufacturer's written instructions.

2.5.4.4 Cable Installation in Conduit and Trunking:


Install cables so that they are orderly and capable of being withdrawn. Arrange

single core wiring generally using the loop-in method.

Trunking: In vertical trunking provide pin racks at 3m intervals. Use ties at 2m

intervals for all wires of the same circuit reference. Mark ties with circuit reference

number at 10m intervals.

Conduit: Provide cable clamps in conduit boxes at 10m intervals in vertical conduit.

Allow for full range of movement at building construction movement joints. Make all

joints to wiring at terminal blocks in conduit boxes.

2.5.4.5 Cable Installation on Tray and Rack:

Place cables side by side or as indicated. Fix using cleats or cable ties so that any

cable may be individually removed. Use metallic ties on cables with specified fire

performance.

2.5.4.6 Cable Surface Installation:

Dress cables flat, free from twists, kinks and strain, and align parallel to building

elements. When glands and clamps are not required, take sheathing of cables into

accessory boxes and equipment and protect against abrasion using grommets or

similar sharp edge protection.

2.5.4.7 Cable Installation - Flexible Cords:

Grip cords securely at connections. Where they do not form an integral part of the

connected accessory or equipment, provide separate proprietary cord grips.

2.5.5 Cable Jointing and Terminating, Generally

Ensure all joints and terminations are made by appropriately qualified cable

jointers, using jointing materials, components and workmanship recommended by

the cable manufacturer and the jointing accessory manufacturer. Install cable

glands in accordance with BS 6121-5.

Cold pour resin and heat shrink joints in accordance with BS 6910-2.

Cut all cable ends immediately prior to jointing or terminating. Seal cables left

unconnected for more that 24 hours to prevent the ingress of moisture. Seal plastic

sheathed cables using proprietary shrink on end caps. Seal lead sheathed cables by

a plumbed dressed lead cap with an airspace to allow conductor movement.

Strip cables to bring out the cores and expose conductors, for the minimum length

required for connection, to leave no exposed length of conductor after termination.

Ensure that strands are not damaged when stripping cable cores. Twist strands

together. Do not reduce number of strands. Secure all strands at terminations.

Clean armour thoroughly prior to jointing or terminating.

At connections to equipment and switchgear without integral cable clamping


terminals, use compression or solder type lugs for bolted terminal connections, of

correct bore.

Form all compression connections to components using tools that cannot be

released unless the correct degree of compression has been achieved.

Install and inspect compression and mechanical connectors on conductors in

accordance with BS 6360 to BS 7609.

Bolt core terminations with lugs to equipment using washers or proprietary

shakeproof devices.

Do not bunch more than three cores at clamping terminals or bolted connections.

Mark cable conductor phasing, or other core identification, at each end of all cables,

and at all joints, maintaining consistency of marking with any existing system.

Connect all cores, including multicore cable spare cores, at all joints and

terminations. Bond any unused cores or multicore cables to earth at both ends,

unless otherwise indicated.

2.5.5.1 Cable Jointing and Terminating - Elastomer and Plastic Insulated Cables:

Joint cables using glands of the type indicated, in accordance with the

manufacturer's instructions.

Use shrouds at all glands, unless otherwise instructed.

At core connections to equipment without integral clamping terminals use

compression lugs unless otherwise indicated.

2.5.5.2 Cable Sleeves:

Pack sleeves with fire resistant material after cable installation.

2.5.6 Support Components -Cables

2.5.6.1 General

Cables referred to in this section are only those types that can be installed without

further mechanical protection.

2.5.6.2 Cable Supports and Finishes:

Cable supports:

Support all cables throughout their length using conduit; or trunking and enclosures; or

cable tray; or cable racking; or special support systems; or cleat or clip fixing direct to

building fabric as indicated on the drawings/schedules.

Ensure tray, racking and special support systems are continuous and firmly fixed to

building fabric. Allow space for additional cables as indicated on the

drawings/schedules.


Ensure cable support system allows for spacing in accordance with BS 7671:2008

for the design current of the cable.

Fixings finishes:

Ensure finish for all support components, fixings, hangers and accessories is as

cable support system or manufacturer's standard.

2.5.6.3 Cable Support System - Proprietary Cable Ties:

Two piece cable tray pattern, on cable tray only. Wrap round self locking non

releasable pattern on everything except cable trays.

2.5.6.4 Cable Support System - Cable Clips:

Polypropylene surface type with pre-fixed hardened steel pin for general use except

on mineral insulated cables.

For mineral insulated cables use bright copper one hole `P' clips for unsheathed

mineral insulated cables, PVC covered for sheathed mineral insulated cables.

2.5.6.5 Cable Tray Installation:

Support from building fabric with minimum clearance behind of 20mm. Install

fixings at regular intervals to prevent visible sagging when loaded, with maximum

spacing 1.2m and 230mm from fittings.

Keep cutting of cable tray to a minimum. Cut along a line of unperforated metal.

Make good finish with zinc rich paint, primer and top coat, or two pack epoxy

paste, as appropriate to tray material and finish.

Fit holes cut in tray for passage of cables with grommets, bushes or other lining.

Install all bolts, fixings and hangers with threaded portion away from cables.

2.5.6.6 Cable Cleats, Ties, Saddles and Clips Installation:

For cables on horizontal tray use ties for each circuit. Use tie manufacturer's special

tensioning tool where available. Crop off tie ends.

For cables on vertical tray use cleats bolted to tray for paper, plastic or elastomeric

insulated cables and saddles or clips for mineral insulated cables. Use cleats sized

to grip cables firmly without undue pressure or strain on cable, but preventing

slipping.

For cables on vertical or horizontal rack use proprietary fixings to rack for paper,

plastic or elastomeric insulated cables and saddles or clips for mineral insulated

cables. On continuous flat surfaces of wood, plaster, brick etc.

Use polypropylene surface fixing clips with prefixed hardened steel pin for PVC

insulated and sheathed cables and sheathed or bright mineral insulated cables. Use

round or flat or flat twin pattern as appropriate, manufactured specifically for cable


being fixed.

Use one hole 'P' clips or two way saddles of bright copper for unsheathed mineral

insulated cable. Use PVC covered for sheathed mineral insulated cables.

Space cleats, ties, saddles and clips

As Appendix G of Guidance Notes `Selection & Erection' published by the IET (IEE).

2.5.7 LV Switchgear and Distribution Boards

2.5.7.1 Fuses:

Supply cartridge fuse links including fuse carrier, bases and associated components

that comply with BS EN 60269 (BS 88), fusing factor category gG, unless otherwise

indicated.

2.5.8 Distribution Boards

Comply with BS EN 60439-1 or BS EN 60439-3 as appropriate. Make internal

separation Form 1 unless otherwise indicated. Make fuseboards fully shrouded. Fit

each distribution board with an isolating switch.

Install busbars in same position relative to their fuse carriers or miniature circuit-

breakers (MCBs) for each pole. In TPN distribution boards supply neutral busbars

with one outgoing terminal for each outgoing circuit.

Provide a multi-terminal earthing bar for circuit protective conductors for both

insulated and metal-cased boards, with one terminal for each outgoing circuit.

Connect directly to earthing terminal without dependence on exposed conductive

parts of enclosure.

Identify each fuseway and MCB way by numbering. Identify each terminal on neutral

busbar and earthing bar with its respective fuseway or MCB way.

Where specific ratings are indicated incorporate fuses or MCBs, otherwise leave

ways blank for future additions.

Enclosures finish:

Finish - Manufacturer's standard.

Colour - Manufacturer's standard colour.

2.5.8.1 Miniature Circuit Breakers:

Standard - BS EN 60898-1.

Supply miniature circuit-breakers with voltage and current ratings, type according to

instantaneous tripping current, energy limiting class, category of duty and

frequency in accordance with BS EN 60898-1.


MCB's shall be kA rated to suit design and the type employed shall be as follows:

Type B Incandescent lighting and socket outlets.

Type C Incandescent and discharge lighting, socket outlets RCD

protected and motors up to 1kW.

Type D Motor and discharge and fluorescent lighting circuits.

MCB boards located external to the main switchboards shall be provided with

hinged protective covers.

2.5.8.2 Residual Current Device:

Comply with BS EN 61008. Supply residual current devices (RCCDs) with rated

voltage, rated current, rated tripping current, rated tripping time and rated breaking

capacity as indicated.

DC component: Ensure dc component does not affect operation. Overcurrent

protection: Fit RCDs with integral overcurrent protection.

2.5.8.3 Residual Current Monitors:

Supply residual current monitors.

Standard - BS EN 62020.

2.5.8.4 Combined Residual Current/Over Current Operated Circuit Breakers:

Supply combined residual current/over current operated circuit breakers (RCBOs) in

accordance with BS EN 61009.

2.5.8.5 Contactors

Contactors shall comply with BS 5424: Part 1 and shall be of the air break type

having an uninterrupted rate duty, a utilization category AC3 and an electrical

endurance of not less than 5000 operations.

Contactors shall be electro-magnetically operated suitable for local and remote control.

The wiring arrangement shall be as indicated on the Drawings.

The contactor-operating coil shall be suitable for 240 volts AC 50 Hertz and shall be

protected by means of an HRC fuse or MCB.

2.5.8.6 Cable Terminations:

Ensure that switchgear and distribution boards are provided with facilities to

terminate size, number and type of cable indicated. Where necessary use fabricated

steel extension boxes for glanding large and multiple cables.

Provide non-ferrous metal glanding plates for single core cable terminations.

2.5.8.7 Fixing:


Fix all equipment independently of wiring system. Use cadmium or zinc

electroplated bolts, nuts, washers and screws.

2.5.8.8 Mounting Height:

Mount single items of equipment 1450mm above finished floor level to centre of

equipment, unless otherwise indicated.

Arrange groups of equipment, other than floor mounted assemblies, so that all

parts of equipment requiring access for operation or maintenance are at least

500mm and no more than 2000mm above finished floor level, unless otherwise

indicated.

2.5.8.9 Access:

Ensure that clearance in front of switchgear and control gear is not less than 1m, or

as indicated.

2.5.8.10 Marking and Drawing:

Number terminals, cables and component parts to correspond with manufacturer's

certified drawings.

2.5.8.11 Cable Terminations:

Terminate paper-insulated cable by means of switchboard manufacturer's standard

compound filled cable boxes.

Terminate PVC SWA PVC and MICS cables inside enclosure by securing cables to

switchboard with glanding plates or glanding brackets; and outside enclosure with

glanding plates or fabricated steel extension boxes.

2.5.8.12 Installation and Commissioning:

Install and commission switchgear and control gear in accordance with the

appropriate standard and the manufacturer's recommendations. Include CT Polarity

check in commission tests.

2.5.9 Luminaires and Lamps

2.5.9.1 General

2.5.9.2 Standards:

Supply luminaires and lamps to standards as appropriate.

2.5.9.3 Lamp Efficacy:

The system is designed to achieve an average initial circuit of at least 65

lumens/watt for fixed lighting equipment within the building.


2.5.9.4 Luminaires - General Purpose:

Standards

Supply luminaires with photometric data in accordance with BS 5225.

Supply luminaires in accordance with BS 4533 (BS EN 60598).

Classification - To BS EN 60598-1.

Safety Support for Components

Provide secondary support for translucent covers, diffusers and gear trays so they

are prevented from falling when their primary fixing is released.

Photometric performance

Ensure luminaires of similar type have same photometric performance as published

data within the tolerances defined by BS 5225.

Electromagnetic compatibility

Ensure luminaires comply with BS EN 61547 for EMC immunity.

2.5.9.5 Luminaires - General Purpose with Safety Glass:

Standards




Safety

Fit luminaire with cover glass to protect against ultra-violet emission and risk from

explosion of lamps.

Safety Support for Components

Provide secondary support for translucent covers, diffusers and gear trays so they

are prevented from falling when their primary fixing is released.

Photometric performance

Ensure luminaires of similar type have same photometric performance as published

data within the tolerances defined by BS 5225.




2.5.9.6 Luminaires - Special Applications:

Standards






2.5.9.7 Emergency Lighting Luminaires:

Comply with BS EN 60598-2-22.

Comply with ICEL:1001. Ensure emergency lighting luminaires are marked with ICEL

certification label.

2.5.9.8 Exit Signs:

Comply with BS 5499-1 & BS 5499-3.

2.5.9.9 Types of High Efficiency Lamp For Non-Daylit Areas:

Light source Type

High pressure sodium All ratings above 70W

Metal halide All ratings above 70W

Tubular fluorescent All 26mm diameter (T) lamps and 16mm (T5) lamps

rated above 11W, provided with low loss or high

frequency control gear. 38mm diameter (T12) linear

fluorescent lamps 2400mm in length

Compact fluorescent All ratings above 26

2.5.9.10 Fluorescent Lamps:

Internationally specified tubular fluorescent lamps to BS EN 60081.

UK tubular fluorescent lamps to BS 1853-2.

Single capped fluorescent lamps to BS EN 60901 and BS EN 61199.


Double capped fluorescent lamps to BS EN 60081 and BS EN 61195.

Self ballasted lamps to BS EN 60969 and BS EN 60968.

2.5.9.11 Low Pressure Sodium Vapour Lamps:

Comply with BS EN 60192 and BS EN 62035.

2.5.9.12 Lamp Manufacturer:

Ensure that lamps of each type are from same manufacturer.

2.5.9.13 Support System - Conduit:

Use not less than 20mm conduit of same type as main conduit system.

Material - steel.

2.5.9.14 Support System - Rod:

Use continuously threaded rods with matching washers and nuts.

Diameter - 6mm.

Material - Cadmium plated steel.

2.5.9.15 Support System - Chain:

Use cadmium plated steel chain with load carrying capacity of not less than twice

weight of complete luminaire.

2.5.9.16 Support System - Flexible Cord:

Use size and type as indicated.

Confirm temperature rating is suitable for operating temperature of luminaire or

lampholder. Confirm that cord is adequate for mass to be supported.

2.5.9.17 Support System - Wall Brackets:

Provide wall brackets. Confirm wall brackets are suitable for supporting

luminaire.

2.5.9.18 Orientation:

Install luminaires in positions indicated, and in horizontal plane unless

otherwise indicated.

2.5.9.19 Cleanliness:

Ensure luminaires are clean and grease free on handover.


2.5.9.20 Installation Of Wall Mounted Fittings:

Install luminaires at height indicated.

2.5.9.21 Material Of Supporting Surface:

Ensure classification of luminaires is appropriate. Do not mount luminaires on

readily flammable surfaces.

2.5.9.22 Support

Ensure support is adequate for weight of luminaires.

Number

Provide the following minimum number of supports for each luminaire longer than

600mm.

Luminaire width (mm) Minimum number of supports

Up to and including 300 2

Over 300 4

2.5.9.23 Support from Conduit:

Where luminaire is supported from conduit provide a conduit box forming an

integral part of conduit system at each point of suspension. Ensure suspensions are

vertical.

Where conduit enters luminaire use back-nuts and washers to secure luminaire body

to conduit support. Provide tube with corrosion resistance equal to conduit system.

Do not support luminaires directly from conduit boxes made from non-metal or

heat sensitive materials, where the temperature of the material may exceed 60o

C or

the mass suspended exceeds 3kg.

2.5.9.24 Support from Trunking:

Where luminaire is supported from trunking use proprietary clamps or brackets

appropriate to the luminaire and trunking.

Do not support luminaires directly from trunking made from non-metal or heat

sensitive materials, where the temperature of the material may exceed 60o

C or the

mass suspended exceeds 3kg.

2.5.9.25 Support by Direct Fixing:

Refer to fixing methods, use luminaire supporting coupler to BS 7001 or follow

manufacturer's recommendations.

2.5.9.26 Suspension:


Suspend luminaires at height indicated. Ensure suspensions hang vertically unless

otherwise indicated.

2.5.9.27 Suspension by Rod:

Use washers, nut and lock-nut at top and bottom of rod. Paint cut ends with calcium

plumbate primer or zinc rich paint.

2.5.9.28 Suspension by Chain:

Use hook cover for suspension from circular conduit box. For connection to

luminaires use luminaire manufacturer's own chain hook, but if not available use

hook with standard screw threaded body to be secured to luminaire body with nuts

and washers. Where indicated use captive hooks.

2.5.9.29 Suspension by Flexible Cord:

Suspend cord from ceiling rose.

2.5.9.30 Connections to Luminaires

Cable Protection

Use appropriate size of grommet where cables enter through hole in luminaire

body.

Earthing

Ensure that the earthing terminal of Class 1 luminaires is connected to the conduit

protective conductor of the supply circuit.

Loose Wiring

Clip or tie back with suitable proprietary devices loose wiring within luminaire, at

300mm intervals.

2.5.9.31 Connections to Luminaires - Direct to Conduit - Terminal Box:

Terminate circuit wiring in terminal block within supporting conduit box. Use

flexible cord from terminal block to luminaire.

2.5.9.32 Connections to Luminaires - Direct to Conduit - At Luminaire:

Terminate circuit wiring at supply terminals of luminaire. Take all conductors

through same cable entry into luminaire.

2.5.9.33 Connections to Luminaires - Direct to Trunking - Terminal Box:

Terminate circuit wiring in terminal block in an adaptable box located on side of

trunking. Use flexible cord from terminal block to luminaire.

2.5.9.34 Connections to Luminaires - Direct to Trunking - At Luminaire:


Terminate circuit wiring at supply terminals of luminaire. Take all conductors

through same cable entry into luminaire.

2.5.9.35 Connections to Luminaires - Suspended from Trunking:

Where luminaires are suspended from trunking, secure plug and socket to BS 546,

adjacent to, or on side of, trunking. Terminate circuit wiring at socket. Take flexible

cord from plug of ceiling rose to supply terminals of luminaire.

2.5.9.36 Connections to Luminaires - Conduit Suspension:


flexible cable from terminal block to luminaire, installed within tube.

2.5.9.37 Connections to Luminaires - Rod or Chain Suspension:


flexible cord from terminal block to luminaire and clip cable to one of the rods or

chains, do not weave cable through links of the chain.

2.5.9.38 Separate Lighting Switches on Different Phases:

Install lighting switches on different phases at least 2m apart.

2.5.9.39 Phase Barrier Lighting Switches on Different Phases:

When lighting switches on different phases are in a common box, use phase barrier

switches in accordance with BS 7671:2008.

2.5.10 Accessories for Electrical Services

2.5.10.1 General:

2.5.10.2 Application:

Supply fixed electrical wiring accessories for use with fixed and portable peripheral

equipment using either power or signalling cables.

2.5.10.3 Samples:

Where indicated submit samples of proposed materials and equipment for approval

before work is started. Label each sample with name, catalogue number and

services in connection with item.

2.5.10.4 Accessories Common Requirements - Metal Clad Plates, Surface Steel Conduit

Installation:

Area of installation - Interior.

Enclosure pattern - Surface.

Accessory mounting - Direct to enclosure.


Enclosure material

Pressed steel or cast iron. Enclosure

finish

As conduit system or galvanized. Coverplate

finish, all accessories to match

Metal clad.

Coverplate pattern - Surface type.

Ancillaries

Earthing terminal integral within switch box.

Neon indicator with red lens, illuminated in "ON" position, for connection units.

Switch rocker bar colour as indicated.

Operating keys for key operated switches, minimum number 2. Fuses to

BS 1362.

Marking

Method - engraving. Mark front plate to indicate equipment served on connection

units.

Conduit and cable entries

Threaded entries, top, bottom or side to suit conduit system. Cable

termination - Manufacturer's standard.

2.5.10.5 Luminaire Connectors - General and Emergency Lighting:

Rating - 2A.

Connector type

Fixed terminal strip, screw cover and cord grip to BS 67.

Load carrying capacity to match selected luminaire.

2.5.10.6 Luminaire Connectors - General Lighting:

Rating - 2A.

Connector type

3 pin plug/socket to BS 546.



2.5.10.7 Luminaire Connectors - Cord Grip General and Emergency Lighting:

Rating - 2A. Connector

type

Cord grip type plug/socket and screw on retaining cover to BS 5733 3 pin or 4 pin.

Luminaire supporting coupler to BS 7001.


2.5.10.8 Isolating Switches - BS EN 60669-1:

Provide isolating switches for fixed appliances.

Utilization category as indicated.

Making capacity as indicated.

Standard - BS EN 60669-1, enclosure box to BS 4662.

Switch type - Rocker bar.

Rating as indicated.

Pole configuration - DP, three pole or TPN as indicated.

2.5.10.9 Isolating Switches - BS EN 60947-3:

Provide isolating switches for fixed appliances.

Utilization category as indicated.

Making capacity as indicated.

Standard - Enclosure box to BS 4662, BS EN 60947-3.

Switch type - Rocker bar.

Rating as indicated.

Pole configuration - DP, three pole or TPN as indicated.

2.5.10.10 Fuse Connection Units - Switched:

Standard - BS 1363-4, enclosure box to BS 4662 and switched. Unit

type - Rocker bar - plastic.

Pole configuration - DP.

Ancillaries


Cord outlet or cord grip and fuse as indicated.

2.5.10.11 Fuse Connection Units - Unswitched:

Standard - BS 1363-4, enclosure box to BS 4662 and unswitched. Pole

configuration - DP.

Ancillaries

Cord outlet or cord grip and fuse as indicated.

Lockable fuse carrier.

2.5.10.12 Socket-Outlets - Single, Switched:

Standard - 13A socket-outlet to BS 1363, enclosure box to BS 4662.

Switching - Switched.

Switch type - Rocker bar - plastic.

Rating - 13A.

Ancillaries

Plug tops 25% of number of sockets, fused as indicated. Gangs - 1

2.5.10.13 Socket-Outlets - Single with Integral RCD, Switched:

Standard - Enclosure box to BS 4662, BS 7288.

Switching - Switched


Rating - 13A.

Ancillaries

RCD, BS 7288. Mains failure trip, sensitivity as indicated. Plug tops 25% of number

of sockets, fused as indicated.

Gangs - 1

2.5.10.14 Socket-Outlets - Double Switched:


Switching - Switched


Rating - 13A.


Ancillaries

Plug tops 25% of number of sockets, fused as indicated.

Gangs - 2

2.5.10.15 Socket-Outlets - Single, Unswitched:


Switching - Unswitched.

Rating - 13A.

Gangs - 1

2.5.10.16 Socket-Outlets - Single with Integral RCD, Unswitched:

Standard - Enclosure box to BS 4662, BS 7288.

Switching - Unswitched.

Rating - 13A.

Ancillaries

RCD, BS 7288. Mains failure trip, sensitivity as indicated.

Gangs - 1

2.5.10.17 Low Voltage Isolating Transformer Units - 240/25v:

Standard - BS EN 61558-1 or BS EN 61558-2-23.

Configuration - Single phase, double wound. Rating -

Input 240V; output 25V; (VA) as indicated. Ancillaries

Plug and socket for 25V; DP switch primary supply; secondary side fusing.

2.5.10.18 Earthing:

Ensure metal framework of equipment is bonded to main earth point. Ensure that

cable CPC's are connected to earth bar.

Provide earth CPC between earth lug on metal box and accessory casing except

where accessory is encased in plastic.

2.5.10.19 Protection:

Ensure there is no physical or electrical damage to accessories when they are

removed from their packaging and during installation.


Provide masking covers for surface mounted accessories to protect surface from

paint.

Where accessories are flush mounted install front plate after painting is finished.

2.5.10.20 Fixing:

Align accessories horizontally and vertically. Where accessories are grouped, mount

horizontally in line and parallel to each other and equidistant.

Fix cover plates to boxes with brass fixing screws.

2.5.10.21 Measuring Mounting Heights:

Take measurement for position of electrical accessories to the centre line of

equipment from either finished floor. Where specified height coincides with other

feature advise the CA..

Mount equipment below a worktop 100mm below underside of worktop.

2.5.10.22 Standard Mounting Heights:

Generally comply with Part M of the Building Regulations and BS8300:2009 for

compliance with DDA requirements.

NOTE: For further DDA requirements see Particular Specification.

2.5.10.23 Radio Interference

All apparatus supplied which is likely to cause radio interference shall be provided

with an effective suppression device in accordance with BS 800 so that the

apparatus is interference free with respect to both radio and television transmitting

frequencies.

2.5.11 Electromagnetic Compatibility

Equipment supplied and installed in accordance with this specification shall meet

the requirements of EMC Directive 89/33/EEC regarding the production of and

immunity from electro-magnetic emissions.

2.5.12 Earthing and Bonding

2.5.12.1 General

2.5.12.2 Materials Generally:

Use materials and installations methods in accordance with:

BS 6651

BS 7671:2008


BS 7430

Electricity Supply Regulations

British Standard 7430; Code of Practice on Earthing

Local Electricity Supply Authority Requirements as appropriate.

2.5.12.3 Conductors to Earthing Systems to BS 7430:

Use - Earthing conductor.

Minimum dimension - BS 7430, current density 50A/mm2.

Form - Strip.

Material - Copper, annealed.

Coverings - None.

Accessories - Conductor clips, metallic.

2.5.12.4 Earthing Systems Conductor Joints:

First Conductor

Form - strip; material - copper.

Dimensions - For conductor current density 50A/mm2

earthing systems.

Second conductor

Form - rod; material - copper.

Dimensions - For conductor current density 50A/mm2

earthing systems.

Solid joint - Brazed or welded, thermic.

Disconnecting test joint

Square clamp, oblong clamp, plate clamp or screw-down clamp.

2.5.12.5 Tape Fixing Devices:

Secure bare conductor tape to structure with fixing devices which avoid piercing

tape and ensure 3mm (minimum) clearance of tape from structure, at 450mm

maximum, centres.

Material for lightning protection systems

Non-conducting.

Material for system earthing

Bronze.


2.5.12.6 Main Equipotential Bonds:

Provide main equipotential bonds in accordance with BS 7430 and BS 7671:2008.

Material - Insulated cable, single core to BS 6004.

Use no joints in main equipotential bonds.

2.5.12.7 Supplementary Equipotential Bonds:

Provide supplementary equipotential bonds to BS 7430 and BS 7671:2008. Joints

not allowed in these bonds.

Material - Insulated cable, single core to BS 6004.

2.5.12.8 Circuit Protective Conductors:

Material: Insulated cable, single core to BS 6004 as indicated; metallic screwed

conduits (excluding flexible); metallic trunking with tinned copper links; armouring

and/or metallic sheathing of armoured cables or integral conductor of multi-core

cable.

Size: Provide protective conductors sized in accordance with BS 7671:2008 (IET (IEE)

Regulations) clause 543 et seq.

2.5.12.9 Earthing Clamps:

Use clamps complying with BS 951, for bonding pipes and lead sheathed cables.

2.5.12.10 Lugs/Tags:

Provide lugs or tags to enable connection of bonding conductors to equipment

earth terminals.

2.5.12.11 Protective Cable Terminations:

For bolted connections use crimp type lugs compressed by automatic tool to

achieve correct pressure and crimp depth.

2.5.12.12 Protective Conductor Warning Notices/Labels:

Provide a permanent label durably marked in letters 4.75mm minimum height "SAFETY

ELECTRICAL CONNECTION - DO NOT REMOVE", in visible position, at each bonding

conductor connection to extraneous conductive parts.

2.5.12.13 Main Earth Conductor - Warning Tapes:

Provide green/yellow PVC tapes labelled "EARTHING CONDUCTOR" over complete

external lengths of main earth conductors at 300mm depth below finished ground.


2.5.12.14 Dissimilar Metals:

Ensure, where dissimilar metals are used for system, that purpose made jointing

materials are used such that corrosion and deterioration of the electrical connection are

not caused. Ensure bonding connections to other metal parts of building are

electrolytically compatible with those metal parts. Use the guidance given in BS 7430

Table 8 when bonding dissimilar materials.

2.5.12.15 Stranded Conductor Joints:

Provide waterproof protection at joints subject to moisture.

Joint copper stranded conductors with compression joints to BS EN 61284.

2.5.12.16 Protective Cable Terminations:

For bolted connections use crimp type lugs compressed by automatic tool to

achieve correct pressure and crimp depth.

Make connections between tape and equipment using high tensile grade brass bolts

with brass nuts, washers and locking devices. Use phosphor bronze bolts, nuts and

washers where connections are liable to corrosion.

2.5.13 Testing and Commissioning

2.5.13.1 General

These tests apply to any and all mains (230V) wiring including the power supply to

control cabinets, door operators and the like.

2.5.13.2 Inspection and Test Procedure:

Comply with BS 7671:2008 Requirements for Electrical Installations Wiring

Regulations), Guidance Notes Number 3 Inspection & Testing and other British

Standards as appropriate.

2.5.13.3 Supply Characteristics:

Obtain information called for in BS 7671:2008 about supply characteristics from

Supplier, other than where to be measured as part of testing procedure.

2.5.13.4 Design Information:

Obtain all design assumptions, calculations and any other information to enable

compliance with BS 7671:2008 to be verified.

2.5.13.5 Incorporated Equipment Characteristics:

Obtain and use information from manufacturers of equipment provided.

Use information provided, for equipment supplied by others and incorporated into


installation.

2.5.13.6 Prospective Short Circuit Current (Ip):

Determine values of IP

by measurement, unless other means are indicated.

Determine IP

at all necessary points within installation to confirm correct equipment

selections.

Obtain from supply undertaker written confirmation of maximum and minimum

values of IP

at origin of installation. Adjust subsequent measured values of IP

accordingly.

2.5.13.7 Initial Verification:

Carry out detailed inspection to verify the requirements of BS 7671:2008, in the

order given in clause therein for New Installation or Altered or Added Installation as

appropriate.

2.5.13.8 Test Equipment and Consumables:

Provide test equipment and consumables to complete tests satisfactorily, and to

retest any failed installations following corrective measures.

Test equipment quality assurance requirements to BS EN ISO 10012.

2.5.13.9 Testing

Carry out in the same order as published the tests required by BS 7671:2008, Part 6

for New Installation or Altered or Added Installation as appropriate.

2.5.13.10 Continuity of Protective Conductors:

Confirm continuity. Use ac source or dc source.

2.5.13.11 Earth Fault Loop Impedance (Zs):

Use 25 A test current. Measure and record source impedance (ZE

).

If alternative LV supply arrangements are available, measure ZS

when using supply

with highest impedance.

Measure ZS

with main equipotential bonding conductors connected. Do not

summate values of several parts of each loop.

2.5.13.12 Settings and Adjustments:

Confirm characteristics and settings of protective devices are within maximum and

minimum specified tripping times. Check correct operation of devices. Confirm

interlocks and sequences operate safely and as indicated.

2.5.13.13 Calibration:

Provide current certificates of calibration for all instruments used during test


procedures. Record particular instrument identity on record sheets.

2.5.13.14 Certification and Reporting:

Complete and hand over to the Client a Completion and Inspection Certificate to BS

7671:2008 Appendix 6 for New Installation or Altered or Added Installation as

appropriate.

2.5.13.15 Completion Certificates:

Provide completion certificates for electrical installations in accordance with BS

7671:2008 (IET (IEE) Regulations).

Record details of departures from BS 7671:2008 (IET (IEE) Wiring Regulations) on

certificate.

Provide copies of calculations justifying departure from BS 7671:2008 (IET (IEE)

Wiring Regulations) and attach to certificates.

2.5.13.16 Records:

Record all results and instrument readings on approved Record Sheets and hand

over to the client two copies for each inspection and test.

2.5.13.17 Conductive Parts:

Test conductive parts simultaneously accessible with exposed conductive parts of

extraneous conductive parts. Establish that they are either not an extraneous

conductive part, or that they are reliably connected by metal to main equipotential

bonding.

Confirm conductive parts which are not extraneous conductive parts are separated

from earth by an impedance greater than 50,000 ohms. Confirm other conductive

parts are bonded to equipotential zone earth bar by an impedance not exceeding

0.1 ohms.

2.5.13.18 Conduit, Trunking and Ducting:

Test and confirm electrical continuity before installing cables.

2.5.14 Identification of Electrical Services

2.5.14.1 Labels and Notices:

Apply identification labels and notices in accordance with BS 7671:2008 (IET (IEE)

Wiring Regulations), Clause 514 to all electrical cables plant and equipment

including components of mechanical systems.

BS 7671:2008 Labels and Notices

Identification of protective devices.


Diagrams, charts or tables to comply with Clause 514-09.

Warning notices, voltages in excess of 250 volts.

Periodic inspection and test notices.

Residual current device notices.

Earth electrode safety electrical connection label.

Bonding conductor connector point to extraneous conductive parts label.

Earth free local equipotential bonding areas warning notice.

Electrical separation areas warning notice.

Outdoor equipment socket outlet notice.

Asset Register identification details (To be agreed with the CA)

2.5.14.2 Materials:

Use materials for labels and notices with a predicted life equal to or greater than the

design life of the electrical cables, plant, equipment or installation to which it refers.

External: Sign written, or stencil in paint compatible with surface.

Colour - Background, plant standard finish. Lettering, white.

Internal: Engraved thermosetting plastic laminate.

Colour - Background, white or red. Lettering, red or white.

2.5.14.3 Fixing - Internal:

Fix labels and notices using materials compatible with label or notice and surface to

which it is fixed by screws into tapped hole or bolted complete with washer nut and

locking device.

2.5.14.4 Arrangement:

Obtain approval prior to manufacture, with regard to style, colour, lettering, size

and position of all labels and notices.

Provide sample showing style, colour, lettering and size, for approval.

2.5.14.5 Lettering and Size of Labels and Notices:

Ensure that all lettering and symbols comply with the requirements laid out in BS

7671:2008 (IET (IEE) Wiring Regulations), paragraph 514 and BS 5499. Use BS 5499-

1 for height of lettering where not otherwise indicated. Ensure labels and notices of

adequate size for the lettering required, and allow a minimum margin around all

lettering of one line space vertically and two letter spacing horizontally.


Font - Helvetica Medium.

Size - BS 5499-1 or 5mm minimum high letters.

2.5.14.6 Conductor Arrangement:

Arrange circuit polarity so that phases read in phase rotation order followed by the

neutral, if any, from top to bottom in horizontal conductor layouts and left to right

in vertical conductor layouts. Ensure flat horizontal arrays have leading phase to the

left and neutral to the right from left to right when viewed from supply point.

Arrange phase or live pole of two wire apparatus at top or left hand and neutral and

earth both at bottom or right hand side. In all cases, ensure conductor

arrangements defined are when viewed from front face of all equipment and

terminating facilities. Apply identification markers in accordance with BS 7671:2008

(IET (IEE) Wiring Regulations), Clause 514 to all conductor termination points.

2.5.14.7 Safety Signs:

Label all electrical plant and equipment using safety sign 8.A.0044 of BS 5499-5

where voltages above ELV exist.

Provide supplementary or text signs complying with BS 5499-5 with each safety sign

8.A.0044 as indicated.

Label all electrical plant and equipment with the labels specified in the appropriate

British Standards for that plant or equipment.

Identify each substation and main switchroom with safety sign 8.A.0044 to BS 5499-5

with supplementary signs to BS 5499-5, notices and signs required by BS 5499-5 for any

fire extinguishing system and notice giving details of,

Name of the Substation or switchroom

The presence of Medium and Low Voltages.

Administrative instructions for access.

Location and method of contacting controlling authority.

Actions to be taken in an emergency.

2.5.14.8 Plant and Equipment Labels:

Fit labels on all items of plant, equipment, controls, cabinets, switches, etc., include

the following information: service controlled, circuit reference, voltage, type of

supply and phase etc., circuit protection type and rating. Wording to be agreed with

the CA, including asset details.

2.5.14.9 Maintenance Notices:

Fix notices giving warning of, and instructions on, any special maintenance

procedures to plant and equipment.


2.5.14.10 Colour Corrected Light Fittings:

Fix a warning or identification disc to light fittings containing colour corrected

fluorescent tubes or other colour corrected light sources to ensure that

maintenance staff install the correct lamps.

2.5.14.11 Engraved Accessory Plates:

Engrave switchplates, spur units, pushes and special plates for bed head units, call

systems, fire alarms, etc. Use 6mm high letters with engraving coloured red.

2.5.14.12 Switchgear:

Fit labels on switchgear as required by BS 7671:2008 and BS EN 60439 to indicate

duty of unit, its voltage, phase and current rating, protective device rating size of

conductor involved, and all other necessary details.

Use an agreed serial coding system; provide at the switch a key to the coding

system.

2.5.14.13 Distribution Boards:

On each distribution board identify every outgoing way with a renewable circuit

chart in a transparent plastic envelope permanently fitted inside distribution board

cover. Clearly indicate in typed script, circuit identification number, cable size, fuse

or circuit breaker rating and a description of item supplied and area supplied by

circuit.

2.5.14.14 Schematic Diagrams:

Provide a purpose made schematic diagram permanently fixed showing the

connections of the equipment and plant.

Locations and materials as indicated in contract preliminaries.

2.5.14.15 Indicator Lamps and Push Buttons for Power Systems:

Use indicator lamp and push button colours in accordance with BS EN 60073.

Indicator lamp: Red, danger or alarm; yellow, caution; green, safety.

Push buttons: Red, emergency action; red, stop or off; yellow,

intervention; green, start or on.

Illuminated push buttons - Type a.

2.5.14.16 Conduit and Trunking Colour Coding:

In areas of mechanical plant or voids accommodating mechanical services, or where

otherwise indicated, identify electrical conduits and ducts in accordance with BS

1710. Apply colour orange to BS 4800 by painting on service as a band over 150mm

or applying an adhesive tape type wrap around services over a length of 150mm.

Place identification colours at bulkheads, wall penetrations and any other place


where identification is necessary.

2.5.14.17 Cable Identification:

Provide all cables, other than final sub-circuit wiring enclosed in conduits or

trunking, with labels fixed at each end of cable either side of wall and floor

penetrations at approximately 12m intervals at convenient inspection points by

means of non-releasable plastic straps, minimum width 4mm.

Ensure labels show the reference number of cable.

2.5.14.18 Terminal Marking and Conductor Identification:

Provide for switchgear and control gear elements whose terminals are marked in

accordance with BS 5472 (EN 50005) and BS 6272 (EN 50042). Use a unique

reference to identify each element in the switchgear or control gear. Mark on or

adjacent to each element its reference. Identify each terminal for connection to

external wiring or cabling using a reference system complying with BS EN 60445

based on the element reference and the appropriate element terminal reference.

Adjacent to terminals. Use lettered or numbered ferrules or sleeves to BS 3858 to

mark each auxiliary conductor or control cable core with the identity of the terminal

to which it is connected and the reference of plant or equipment to which it is

connected and the identity of the terminal at the remote end. Ensure that main

circuit conductors are identified in accordance with BS 7671:2008 (IET (IEE) Wiring

Regulations) paragraph 514 et seq. Ensure that all identification of terminals and

conductors is recorded and included on record drawings and in operation and

maintenance documentation.

2.5.14.19 Cable Conductor Colour Coding:

Identify cable conductors in accordance with BS 7671:2008 (IET (IEE) Wiring

Regulations) paragraph 514 et seq, note that a lighting sub-circuit switch wire is a

phase conductor in a single phase circuit.

All single phase final sub-circuit phase wiring colour coded brown.

NOTE: Warning notice to be fixed to front cover and inside distribution boards and

switchpanels with a mixture of wiring colours.

2.5.14.20 Cable Jointing and Termination:

Connect all cables in the installation so that the correct sequence of phase rotation

is maintained throughout. Where straight through joints are approved joint medium

voltage conductors as they lie, ensuring their complete length is phased out on

completion. Ensure connections at terminations of MV cables are made in the

correct phase rotation and ensure cable conductor termination marking if any,

complies with this phase sequence. Where straight through joints are approved on

low voltage cables, whether power cables or control or auxiliary cables, joint

conductors strictly in accordance with their colour or numeric coding. Where such

joints are approved on mineral insulated or other non-coded conductor cables,

identify each core at the joint and make the joint core to core.


2.5.15 Fixing to Building Fabric

2.5.15.1 General

Lightweight equipment and conduit saddles fixed to the building structure shall be

by means of proprietary fibre or plastic plugs. Alternative fixing devices may be

used subject to the approval of the Engineer. Woodscrews shall be used in the

following environments, (dry) steel, (damp) brass, (corrosive) cadmium plated steel.

Fixing to the brickwork shall be made in the brick and not in the bond. If it is not

possible to make all the fixings in the brickwork, then the equipment shall be

positioned to enable the upper fixings to be made in the brickwork.

Heavy equipment shall not be fixed by plugs or shot bolts without the written

approval of the Engineer, approved purpose-made clamp brackets and bolts or

patent fixing bolts shall be used. Where heavy equipment is to be located on

lightweight construction walls, the Contractor shall submit to the Engineer, for

approval, details of the proposed support and fixings. Structural steelwork shall not

be drilled for any purpose without the written approval of the Engineer. In general,

all fixing to steelwork shall be by means of patent clamp brackets or hook bolts.

Approval shall be obtained from the Engineer for any other type of fixing.

2.5.15.2 Preparation:

Mark-out, set-out and firmly fix all equipment, components and necessary brackets

and supports.

2.5.15.3 Manufacturer's Drawings:

Use manufacturer's drawings and templates for purposes of marking and setting

out.

2.5.15.4 Fixings:

Ensure structure and fixings are suitable for items to be fixed.

2.5.15.5 Loading Details:

Provide loading details for all fixing types.

2.5.15.6 Building-In by Others:

Provide all necessary assistance to enable any item of building-in type to be built in

by others.

2.5.15.7 Size of Fixing:

Use largest size of bolt, screw or other fixing permitted by diameter of hole in item

to be fixed.

2.5.15.8 Greasing of Fixings:


Ensure all bolts, screws or other fixings used are greased or lubricated in

accordance with manufacturer's instructions.

2.5.15.9 Standards:

Comply with BS 3974-1 for fixings. Ensure that fixings such as expanding anchors

are tested for tensile loading in accordance with BS 5080-1.

2.5.15.10 Plugs:

Use plugs of suitable size and length for fixings. Use plastic, fibrous or soft metal

non-deteriorating plugs to suit application. Do not use wood plugs.

Ensure that when screw is in place, threaded length is in plug. Ensure plugs used for

screw fixing are set-in to correct depth prior to final tightening.

2.5.15.11 Screws:

Use screws to BS 1210. Generally use sheradized steel wood screws for fixing to

concrete, brickwork or blockwork.

In damp or exposed situations use greased brass wood screws.

2.5.15.12 Cast-In Fixings:

Where cast-in fixings are permitted, mark out and set fixings in accordance with

manufacturer's instructions.

2.5.15.13 Shot Fired Fixings:

Obtain approval prior to using shot fired type fixings.

2.5.15.14 Self Adhesive Fixings:

Obtain approval prior to using self adhesive type fixings.

2.5.15.15 Proprietary Channel Inserts:

Provide proprietary channel inserts for casting in where indicated.

2.5.15.16 Drilling:

Drill holes squarely. Use drills of requisite size and depth, and appropriate to fabric.

Do not flame-cut holes in metal work.

2.5.15.17 Proprietary Fixings:

Comply with manufacturer's instructions for all fixings.

2.5.15.18 Fixing To Reinforced Concrete:

Take precautions to avoid fixing through reinforcement.


2.5.15.19 Fixing To Brickwork:

Do not fix to unsound material or mortar between brickwork courses.

2.5.15.20 Fixing To Timber Rails:

Fix equipment, brackets and supports by drilling hole through timber rail and fixing

with bolt, back plate, washer and loose nut.

2.5.15.21 Fixing to Hollow Stud/Tile/Block Walls:

Fix equipment, brackets and supports where there is access at rear of wall, by

drilling hole through wall and fixing with bolt, back-plate, washer and loose nut.

Fix equipment, brackets and supports where there is no access at rear of wall, drill

hole and use screw anchor type fixing or gravity type toggle fixing.

2.5.15.22 Fixing To Concrete, Brickwork or Blockwork:

Fix equipment, brackets and supports using wood screws in plugs.

Drill holes and fix using steel bolts of grouted bolt type or expanding bolt type

fixing.

2.5.15.23 Fixing to Metalwork:

Fix equipment, brackets and supports by drilling holes and fixing using set screws

or bolts complete with washers, shakeproof washers and loose nuts.

2.5.15.24 Fixing to Structural Steelwork and Concrete Structures:

Provide manufacturer's information on recommended fixing. Obtain approval for

any fixing to structure steel work and concrete structures.

Generally use proprietary fixings to structural steelwork and concrete structures.

Obtain approval to cut holes in structural steelwork or concrete structures or weld

to structural steelwork.

2.5.16 Off Site Painting and Anti-Corrosion Treatments

2.5.16.1 General Requirements:

Where particular methods of finish and painting are not specified, ensure following

requirements are met.

Protect all metal work, plant, equipment, pipelines, ductlines, ancillaries, brackets

and supports against corrosion and oxidization.

Provide ferrous metals, machined or otherwise with protective coatings at

manufacturer's works.

Ensure all items requiring on-site decorative finishes are provided primed to suit


base material and required finish.

2.5.16.2 Damaged Finishes:

Following delivery to site, storage on site and installation make good any damage to

finishes, by cleaning, degreasing and re-furbishing.

2.5.16.3 Paint Materials:

Use the following materials as appropriate

Solvent borne priming paint to BS 7956 for bare woodwork.

Red Oxide priming paint for bare iron and steelwork.

Zinc Chromate priming paint for bare ferrous and non-ferrous metals.

Calcium Plumbate priming paint to BS 3698 for galvanized steel or composite

wood/metal components.

Undercoating paint for previously primed or painted surfaces before the application

of finishing coats.

Gloss finishing paint for previously primed or painted/undercoated surfaces.

Epoxy resin paint for specialist coatings requiring resistance to acids, alkalis, oils,

solvents, abrasion or high humidity.

Aluminium paint to BS 388 for structural steelwork, storage vessels, heated metallic

surfaces and similar applications where moisture and heat resistant properties are

required.

Cold galvanizing paint for making good damage to previously galvanized surfaces

and protection to galvanized materials modified during installation.

Zinc-rich metallic to BS 4652 for bare iron and steelwork where electrical

conductivity has to be assured.

Black tar -based paint to BS 1070 for moisture resistant protection to metal surfaces

where decorating appearance is not important.

Bitumen based coatings for cold application to BS 3416 protection to iron and steel,

particularly pipelines and fittings for use in contact with potable water.

Bitumen based coatings for cold application to BS 6949 not to be used in contact

with potable water.

2.5.16.4 Paint Quality:

Ensure paints used are of quality and type to suit application and that:-

primers have good adhesion, covering power, rust-inhibiting and grain filling

properties.


gloss finishing paints are of machine finish grade having high adhesion and high

resistance to solvents, mineral oils, cutting oils, detergents, chipping and impact

damage.

2.5.16.5 Heat Resistant Paint:

Use heat resistant paints for applications to surfaces over 80o

C.

2.5.16.6 General:

Ensure paints are applied in accordance with manufacturer's instructions and to BS

6150.

2.5.16.7 Weather and Other Conditions:

Do not apply paints where weather, temperature, humidity or other conditions may

have a damaging effect upon finish or paint.

2.5.16.8 Cleaning and Preparing Steel Surfaces for Painting:

Ensure metal surfaces are thoroughly cleaned, all mill and weld scale removed and

finally degreased. Clean steel surfaces in accordance with BS EN ISO 8503 and prepare

surfaces for painting in accordance with BS EN ISO 4618-3.

2.5.16.9 Cleaning and Preparing Surfaces for Painting:

Ensure metal surfaces are thoroughly cleaned, all mill and weld scale removed and

finally degreased.

Prepare surfaces for painting in accordance with BS EN ISO 4618-3.

2.5.16.10 Application Off-Site:

Wherever possible ensure paint finishes applied by component manufacturers are

spray applied.

2.5.16.11 Application:

Apply paint evenly and ensure finish shows no excessive brush marks, grinning,

runs, sagging, ropiness or other application defects.

2.5.16.12 Cold Galvanizing:

Repair damage to galvanized components due to installation process, i.e. following

cutting, drilling or welding, by applying 2 no. substantial coats of cold galvanizing

paint.

2.5.16.13 Protection of Bright Machine Parts:

Apply a protective coating to all bright machined parts before despatch from works.

Do not remove protective coatings unless required for installation, testing or

commissioning purposes and in such cases reinstate upon completion.


Repair any damaged protective coating or bright machined part, or where necessary

replace damaged component.

Use and apply metal coatings in accordance with manufacturer's instructions.

Complete where possible all welding, drilling, bending and other work before metal

coating.

2.5.17 Testing, Commissioning and Record Documentation.

2.5.17.1 General

1. Provide all the testing, commissioning, documentation for the complete

engineering installation.

2. Use commissioning and testing codes produced by or authorised by the

Chartered Institute of Building Services National Inspection Council for Electrical

Installation Contractors, National Approval Council for Security Systems. Security

Systems and Alarms Inspection Board or equivalent

3. Ensure sufficient supplies of fuel, electricity and water required for the test are

available.

4. Provide all test instruments, together with sufficient labour and skilled

supervision to properly carry out the tests.

5. Agree details of the method of carrying out and recording the tests with the

Contract Administrator.

6. If the tests fail to demonstrate the satisfactory nature of the installation, or portion

thereof, the Contract Administrator will decide whether such failure is due to defective

equipment or non-compliance with the Specification and in such cases he may reject the

said installation or part thereof. In the event of such rejection the Contractor shall, at his

own expense, rectify the matter and re-test to the satisfaction of the Contract

Administrator.

7. In the event that the Contractor does not satisfactorily carry out any test or

tests the Contract Administrator shall be at liberty after giving due notice to the

Contractor arrange for such tests to be carried out and charge to the Contractor

accordingly. Such action shall not relieve the Contractor of any of his

responsibilities under the Contract.

2.5.17.2 Test Records

1. Provide the Contract Administrator with test records in an approved form

immediately on completion of the tests.

2. All test records shall be provided in triplicate.

3. Test records shall, for hydraulic or similar tests and for tests on equipment at

the manufacturer’s works, comprise test certificates showing the date of the test,

the pressure applied and the period of application. For performance tests the test

record shall comprise a report and record sheet showing the date of the test, a


tabulated summary of the test readings and a report stating the result of the tests.

2.5.17.3 Tests at Manufacturers’ Works

1. The requirements of relevant British Standard Specifications with regard to

works tests shall be complied with.

2. Specific tests of items of equipment at the manufacturers’ works, other than

those called for in British Standards, shall be carried out as described in the

appropriate section of the Specification.

3. Statutory and Insurance tests shall be carried out as necessary.

4. Where specifically indicated by the Contract Administrator, tests described in

paragraphs 1, 2 and 3 above shall be carried out in the presence of their

representative. In such cases fourteen clear days notice of each test shall be given

to the Contract Administrator.

5. In all cases described above, the Contractor shall provide copies of test

certificates. Such certificates shall clearly state whether the certificates are for type

tests, or for tests of individual items of equipment.

2.5.17.4 Setting to Work and Commissioning

1. Set to work the complete Works, or part thereof, at the selection of the

Contract Administrator, and make all necessary adjustments to ensure correct

functioning.

2. Before starting up any equipment, installation or part thereof ensure it is both

safe and fit to do so.

3. Where another Contractor or Authority is providing a service or supply to a

system or piece of equipment provided under the Contract the Contractor shall

provide certification of fitness to accept such service or supply as a pre-requisite to

its being made live by others.

4. Items of plant shall be run as soon as possible after installation and shall be

checked for satisfactory operation.

5. On completion of commissioning demonstrate to the Contract Administrator

that :

a. The equipment provided complies with the Specification in all particulars and

is of adequate capacity for the full rated duty.

b. That all items of plant and equipment operate sufficiently quietly to meet the

specified requirements.

c. That all instruments, protective devices, control, etc. are correctly calibrated

and accurate.

d. That all electrical circuits are properly fused and protected and that all

systems and equipment are properly earthed and conduit systems electrically


continuous.

e. That the systems have been properly balanced and adjusted in respect of flow

signals, volumes brightness or as relevant.

2.5.17.5 Instruction of Employer’s Staff

At times to be agreed, instruct the Employer’s staff in the use and correct operation

of the Works and ensure that such staff are competent to take over the installation

on completion.

Obtain a signature from the staff so instructed, stating this instruction has been

received and properly understood.

2.5.17.6 Instruction of Residents

At the time of issuing the fobs, instruct the residents in the use and operation of

the door entry system. Produce a simple, A4 guide on laminated white paper to

assist with the training and to be left with each resident.

2.5.17.7 Provision of Record Documents

Supply to the Contract Administrator as a pre-requisite to Practical Completion of

the Works, comprehensive record documents finalised in detail and approved by the

Contract Administrator. Great importance will be placed upon the quality, accuracy,

clarity and completeness of the record documents and upon their being made

promptly available.

Demonstrate from time to time as required by the Contract Administrator

throughout the execution of the Works, that adequate and accurate records are

being kept such as will ensure the ultimate completeness and accuracy of the record

documents and that the record documents are themselves being progressively

compiled as the work on site proceeds.

2.5.17.8 Scope of Record Documents

1. Record documents shall comprise, all as described in this Specification, the

following :

• A detailed description of the works carried out

• A detailed description of the systems installed

• Equipment schedules

• Parts identification and recommended spares

• Spares policy

• System commissioning and test data

• Description of system operation

• System settings, adjustments and set points

• Maintenance and performance data


• Names and addresses of suppliers, manufacturers and specialists involved

• Manufacturer’s detailed information and literature

• As installed drawings together with an index of drawings

2. All record documents shall be provided in triplicate, two sets electronically and

one set in paper format.

3. The record document shall be adequate for the following purposes:

a. To record clearly the arrangements of the various sections of the Works as

actually installed and to identify and locate all component parts thereof.

b. To make it possible to comprehend the extent and purpose of the Works as

actually installed and to identify and locate all component parts thereof.

c. To set out clearly the extent to which maintenance and servicing is required

and how, in detail, it should be executed.

d. To provide sufficient and readily accessible information properly to facilitate

the ordering of spares and replacements.

4. The Record Documents shall be correlated so that the terminology and numerical

and/or other references used therein are consistent with and similar to those used

in the physical identification of component parts of the Works. Reference shall also

be made where appropriate, to the colour identification system.

2.5.17.9 Electronic Format of Record Information

All text shall be either in MS Word 2003 format or Adobe Portable Document Format

(PDF) but must be in a searchable format. Scanned documents are not acceptable.

Manufacturer’s operating and maintenance shall be in searchable PDF format

generated from original, electronic documents.

PDF documents shall be original PDF generated (printed) documents rather than PDF

scans. All documentation must indicate its current date.

Drawings shall be provided in PDF format and AutoCAD 2007 format, but must be

capable of being opened by AutoCAD versions as old as 2000.

Two paper copies and one electronic copy of the Record Information shall be

supplied in the agreed formats and subject to having been approved by the CA.

2.5.17.10 Record Drawings and Schedules

1. The Record Drawings provided by the Contractor shall comprise the following

as applicable. Drawings may be first originals. All drawings must bear the installed

and makers name and address. The drawing must also bear the wording “As

Installed”

2. Drawings or sets of drawings to a scale of 1:50 showing the following as

installed”.


a. The location of all Service connections provided, within this Contract whether

carried out by the Contractor or by the appropriate Authority, together with the

points of origin and termination, size and material of pipes, line pressure and/or

other relevant information.

b. Location, identity, size and details of all apparatus served by, or associated with,

each of the various services. The information with respect to size and details may

be present in schedule form subject to the prior approval of the Contract

Administrator.

c. The layout, location and extent of all systems installed including doors,

screens, cabinets, equipment, risers and the like.

d. The location and identity of each room or space housing plant, machinery or

apparatus.

3. Drawings or sets of drawings to a scale of 1:25 showing the following as installed

a. Elevations and plans of all doors and screens and their environs.

b. Detailed arrangements fixings, trimmers and other, non-standard details.

4. Manufacturers’ drawings showing the general arrangement and assembly of

component parts of all parts and any items which may require servicing.

5. Diagrams illustrating the principles of application of all controls and of

equipment, present in combination with items above or separately as agreed with

the Contract Administrator.

6. Manufacturers’ internal wiring diagrams for each piece of electrical/control

equipment supplied under the Contract, together with physical arrangement

drawings where necessary to locate and identify the component parts.

7. Installers comprehensive diagrams showing, in detail, all power wiring and all

control wiring and/or pneumatic or other control piping in accordance with details

provided by the Contractor, including size, and type of conductors or piping used

and identifying the terminal points of each.

2.5.17.11 Operating Maintenance Instructions.

1. Operating and maintenance instructions shall be provided by the Contractor

and shall comprise the following, written to be read in conjunction with the Record

Drawings.

a. A general description of the scope, purpose and manner of working of each

system or apparatus forming part of the Works.

b. A detailed description of the scope, purpose and manner of working of each

system of automatic controls.

c. Data on general design parameters and associated normal operating

conditions, etc., based on the commissioning tests.

d. Clear and comprehensive instructions for the running and operation of each


system or apparatus.

e. Instructions in respect of any precautionary measures from time to time

necessary.

f. Instructions in respect of the care of apparatus normally subject to seasonal

disuse.

g. Instruction, as to the nature, extent and frequency of servicing necessary

properly to maintain the Works in good condition and as to the materials to be used

for the purpose. This information may be supported in detail, but not replaced, by

maintenance instructions provided by the suppliers of particular components

apparatus.

h. Users duties with respect to legislation, Health and Safety and the like, e.g.

periodic inspection and testing.

2. Copies of manufacturers’ data with respect to the nature, type and method of

operation of individual pieces of equipment, together with their detailed

maintenance instructions shall also be supplied. Such data, in the form of individual

electronic files, shall be indexed and cross-referenced to the operating and

maintenance instructions.

3. Receipt of record drawings, O&M manuals, schedules and operating maintenance

instructions by the Contract Administrator shall be a pre-requisite of final payment.

2.5.18 BS APPENDIX

The Contractor shall comply with the following standards. The list is not exhaustive

but is indicative of the standards required. The Contractor shall comply with the

latest versions of all standards as at the date of tender.

BS EN 60839 Alarm and electronic security systems.

-11-2:2015 Electronic access control systems. Application guidelines

BS EN 50133 System requirements for access control systems,

-1:1997 British Standards

BS EN 50133 Component requirements for access control systems,


BS EN 50133 Application guidelines for access control systems,


BS 3693:1992 Recommendations for design of scales and indexes on

analogue indicating instruments

BS 381C:1996 Specification for colours for identification, coding and

special purposes


BS 4678-1:1971 Cable trunking. Part 1 Steel surface trunking.

Current, but obsolescent

BS 4678-2:1973 Cable trunking. Part 2 Steel underfloor (duct) trunking

BS 4678-4:1982 Cable trunking. Part 4 Specification for cable trunking

made of insulating material

BS 4800:1989 Schedule of paint colours for building purposes

BS 5266-1:1999 Emergency lighting. Part 1 Code of practice for the

emergency lighting of premises other than cinemas and

certain other specified premises used for entertainment

BS 5266-2:1998 Emergency lighting. Part 2 Code of practice for electrical

low mounted way guidance systems for emergency use

BS 5266-3:1981 Emergency lighting. Part 3 Specification for small power

relays (electromagnetic) for emergency lighting

applications up to and including 32 A

BS 5372:1997 Specification for dimensions of cable terminations for

multi-core extruded solid dielectric insulated

distribution cables of rated voltages 600/1000 V and

1900/3300 V having copper or aluminium conductors

BS 6651:1999 Code of practice for protection of structures against

lightning

BS 7430:1998 Code of practice for earthing

BS 7856:1996 Code of practice for design of alternating current,

watthour meters for active energy (classes 1 and 2)

BS 88-2.2:1988 Cartridge fuses for voltages up to and including 1000 V

a.c. and 1500 V d.c. Part 2.2 Specification for fuses for

use by authorized persons (mainly for industrial

application). Additional requirements for fuses with

fuse-links for bolted connections

BS 88-4:1988 Cartridge fuses for voltages up to and including 1000 V

a.c. and 1500 V d.c. Part 4 Specification of

supplementary requirements for fuse-links for the

protection of semiconductor devices



supplementary requirements for fuse-links for use in

a.c. electricity supply networks




supplementary requirements for fuses of compact

dimensions for use in 240/415 V a.c. industrial and

commercial electrical installations

BS EN 13601: Copper and copper alloys. Copper rod, bar and wire for

2002 general electrical purposes

BS EN 50085- Cable trunking and cable ducting systems for electrical

1:1999 installations. Part 1 General requirements

BS EN 50085-2- Cable trunking and cable ducting systems for electrical

3:2001 installations. Part 2-3 Particular requirements for slotted

cable trunking systems intended for installation in

cabinets

BS EN Basic and safety principles for man -machine interface,

60073:2002 marking and identification. Coding principles for

indicators and actuators

BS EN Specification for alternating current disconnectors and

60129:1994 earthing switches. Replaced by BS EN 62271-102:2002

but remains current.

BS EN 60269- Low-voltage fuses. Part 1 General requirements

1:1999

BS EN 60269- Low-voltage fuses. Part 2 Supplementary requirements

2:1995 for fuses for use by authorized persons (fuses mainly

for industrial application)

BS EN 60269- Low-voltage fuses. Part 3 Supplementary requirements

3:1995 for fuses for use by unskilled persons (fuses mainly for

household and similar applications)

BS EN 60269-4- Low-voltage fuses. Part 4-1 Supplementary requirements

1:2002 for fuse-links for the protection of semiconductor

devices. Sections I to III: Examples of types of

standardized fuse-links

BS EN A.C. metal-enclosed switchgear and control gear for

60298:1996 rated voltages above 1 kV and up to and including 52 kV

BS EN Specification for degrees of protection provided by

60529:1992 enclosures (IP code)

BS EN 60947-5- Specification for low-voltage switchgear and control

1:1998 gear. Part 5-1 Control circuit devices and switching

elements. Electromechanical control circuit devices


BS EN Alternating current static Var-hour meters for reactive

61268:1996 energy (classes 2 and 3)

BS EN 61810- Electromechanical non-specified time all-or-nothing

1:1999 relays. Part 1 General requirements

BS EN 61810- Electromechanical non-specified time all-or-nothing

5:1999 relays. Part 5 Insulation coordination

BS 1362:1973 Specification for general purpose fuse links for

domestic and similar purposes (primarily for use in

plugs)

BS 381C:1996 Specification for colours for identification, coding and

special purposes

BS 5839-1:2002 Fire detection and alarm systems for buildings. Part 1

Code of practice for system design, installation,

commissioning and maintenance

BS 7001:1988 Specification for interchangeability and safety of a

standardized luminaire supporting coupler intended for

installation in cabinets

BS EN Specification for degrees of protection provided by

60529:1992 enclosures (IP code)

BS EN Specification for a.c. supplied electronic ballasts for

60929:1992 tubular fluorescent lamps. Performance requirements

BS EN 61347-2- Lamp control gear. Part 2-3 Particular requirements for

3:2001 a.c. supplied electronic ballasts for fluorescent lamps

BS Requirements for electrical installations. IET (IEE) Wiring

7671:2008:2001 Regulations. Seventeenth edition

BS EN 50130- Alarm systems. Part 4 Electromagnetic compatibility.

4:1996 Product family standard: Immunity requirements for

components of fire, intruder and social alarm systems

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