MS Reference: G/777/11671/DW/00 Rev 02 DEMOLITION MANAGEMENT PLAN WORKS INFORMATION Method Statement Ref. No: G/777/11671/DW/00 Client Name: Pegasus Life Method Statement Rev No: 02 Work Location: Wildernesse Estate, Sevenoaks Other areas: Work Scope Task(S) (Brief Description): Demolition of Buildings Prepared By: D.Willcott Site Supervisor: TBC The responsibility for the Health, Safety & Environmental aspects of the contract works rests fully and unreservedly with Demolition Contractor. Acceptance of this Method Statement by The Client does not in any way absolve the contractor from his legal and moral obligations to ensure a Safe System of Work. All personnel involved with the scope of work must be fully briefed on the Method Statement and associated Risk and COSHH Assessments and all work must be carried out strictly in accordance with the procedures in this Method Statement. Daily and task work briefing sessions must be held either daily if operatives are being engaged in a single activity for that entire day or if operatives undertake different tasks during the day a task briefing must be undertaken for each and every task. All method statement, risk, COSHH, Manual Handling, task or work briefings must be recorded in the site health and safety register.
Transcript
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MS Reference: G/777/11671/DW/00Rev 02
DEMOLITION MANAGEMENT PLAN
WORKS INFORMATION
Method Statement Ref. No:
G/777/11671/DW/00
Client Name: Pegasus Life Method Statement Rev No: 02
Work Location: Wildernesse Estate, Sevenoaks Other areas:
Work Scope Task(S)(Brief Description): Demolition of Buildings
Prepared By: D.Willcott Site Supervisor: TBC
The responsibility for the Health, Safety & Environmental aspects of the contract works rests fully and unreservedly with Demolition Contractor. Acceptance of this Method Statement by The Client does not in any way absolve the contractor from his legal and moral obligations to ensure a Safe
System of Work. All personnel involved with the scope of work must be fully briefed on the Method Statement and associated Risk and COSHH Assessments and all work must be carried out strictly in accordance with the procedures in this Method Statement. Daily and task work briefing sessions must be held
either daily if operatives are being engaged in a single activity for that entire day or if operatives undertake different tasks during the day a task briefing must be undertaken for each and every task. All method statement, risk, COSHH, Manual Handling, task or work briefings must be recorded in the site health and safety register.
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MS Reference: G/777/11671/DW/00Rev 02
DEMOLITION MANAGEMENT PLAN
Work element: Demolition of Buildings
Method Statement No.
G/777/11671/DW/00 Rev 02
Rev Date Description of modifications
00 27.05.15 For Issue
01 21.08.15 Amendments to pick up comments from highways and planning
02 26.10.15 Include College Site
Wildernesse House, Sevenoaks
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CONTENTS
1. INTRODUCTION 2. SCOPE OF WORKS / METHOD OF WORK 3. LABOUR 4. TRAINING 5. LIFTING EQUIPMENT 6. PORTABLE TOOLS 7. MECHANICAL PLANT 8. PROTECTION OF EMPLOYERS ASSETS 9. WELFARE FACILITIES 10. STORAGE AND HANDLING OF HAZARDOUS SUBSTANCES AND MATERIALS 11. TEMPORARY STRUCTURES/FALSEWORK 12. WORKING AT HEIGHTS 13. WORK PERMITS AND LICENSES 14. FIRST AID 15. FIRE 16. EXCAVATION 17. PERSONAL PROTECTIVE EQUIPMENT 18. ACCIDENTS, INCIDENTS AND RIDDOR 19. EMERGENCY PROCEDURES 20. TRANSPORTATION 21. HOUSEKEEPING 22. ACCESS AND EGRESS TO AUTHORISED PERSONNEL 23. NOISE 24. AIR QUALITY AND DUST 25. WASTE MANAGEMENT 26. TRAFFIC MANAGEMENT 27. FUEL 28. RECORDS AND DOCUMENTATION
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1. INTRODUCTION
A Demolition Contractor will be contracted by Pegasus Life to carry out the demolition works located at the Wildernesse Estate, Sevenoaks. Refurbishment & Demolition Asbestos Surveys will be undertaken of the buildings and all asbestos based products identified will be removed by fully licenced contractors prior to the demolition works commencing. The Demolition Contractor will be acting as principle contractor for the duration of the works.
Programme dates may be subject to change in the event of unforeseen delays.
The Demolition Contracts will be split into two parts:
Stage 1 – Demolition of buildings etc. on the main site comprising the Stables, Pool Building, Education Block, Nursery Building, Richie House, Dorton House including areas of pathway, roads etc. Anticipated demolition period is 11/15 to 03/16
Stage 2 – Demolition of the College Buildings, pathways etc. The demolition of the college site will commence prior to the commencement of construction of the Sylvan phase of the Main site works. Anticipated demolition period is 06/16 – 09/16
The balance of the demolition as depicted on plan A211-A-ZO-(00) P101 will be part of the Main Contract works.
The site is only to be accessed using the Client’s proposed access route indicated below; this information will be circulated to all relevant parties;
The construction route for the Demolition & Enabling works will be from the A25 via Seal
Drive and into Wildernesse Ave as indicated on the above plan
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The Deed of Easement dated 19 July 2013 relating to Wildernesse Avenue and Seal
Drive, Seal, Sevenoaks Kent between the Trustees and RLSBP (and subsequently
Pegasus Life) permits Pegasus Life the right to pass and repass with or without vehicles
of all descriptions, plant, machinery at all times and for all purposes connected with the
use of the Land including development or redevelopment of the Land over and along the
Trust’s Land
The vehicles accessing the site will vary between small vans, 40ft skip lorries, four axle
trucks to flatbed articulated vehicles. The weights of these vary depending on the load.
The table below identifies the estimated Construction vehicle numbers that will be
generated by the works associated with the two stages of Demolition works.
• Three trees at the junction of A25 and Seal Drive on the eastern side are very close to
the road and we propose to protect these trees by wrapping the trunks with chestnut
pailing fencing up to a height of 1.5-1.8m above ground.
• Any branches overhanging the carriageway will be pruned back in line with the road
edge to a recommenced height of 4m. This will require the removal of small branches
only that will not have significant effect on the tree condition. These works will be
carried out by a recognised tree surgeon.
• The access route will be inspected on a monthly basis by an arboriculture consultant to
monitor the condition of the trees and if there is any impact of traffic on the trees.
• Vehicles will not be allowed to queue on the highway.
• A wheel wash operation will be located at the site entrances to prevent the spread of
any mud/debris onto surrounding roads.
• Management of vehicles on site will be in accordance with guidelines (HSG144 and
INDG199 – HSE guidelines on vehicle movement and management). All site
plant/vehicles will be banked by a trained banksman and signs indicating vehicle
routes will be posted on site.
• All drivers will be issued with a copy of the traffic route plan prior to coming to site and
will receive at traffic management induction at Demolition Contractor’s haulage yard
prior to attending site.
2. SCOPE OF WORKS
2.1 Demolition Sequence
2.1.1 Prior to Works Commencing
• The Manager will brief supervisors and staff / operatives on the method statement, risk assessment (including controls), COSHH and other assessments associated with the works.
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• Arrange a site meeting, involving the relevant parties to the project, in order to finalise project details and determine any outstanding information, traffic issues, access/egress routes, etc.
• Site Supervisors will carry out all work activity briefing sessions.
• All staff whom attend the briefing shall sign the briefing sheets to confirm that they attended and understood the briefing.
• Briefing sessions of non-English speaking labour will be carried out by a competent English speaking interpreter.
• This document will be reiterated and referred to in detail on commencement of each activity.
2.1.2 Sequence of Works:
• The company will maintain suitable and sufficient segregation from members of the public to allow for the execution of the works.
• Carry out Conditions Survey
• Welfare Establishment
• Erection of Tree protection, Drawing No LL454-400-0028
• Trim any trees on site to ensure vehicle routes are clear of branches
• Erect hoarding around site
• Service Isolations
• Asbestos Identification
• Enabling Soft Strip
• Asbestos Removal
• Final Soft Strip of Buildings
• Slabs & Foundations
• Site clearance.
2.1.3 Conditions Survey
A Condition Survey of the surrounding roads, footpaths/pavements and adjacent structures. This will be in a document format including photographs and issued to the client before works start.
2.1.4 Welfare Establishment
The welfare compound will have Heras fencing erected around it to segregate it from our area of works. Pedestrian routes will also be erected to give operatives safe access to their area of works - these routes will be created by erecting Heras fencing as and when needed. These facilities will fully comply with current CDM Regulations and the proposed position will be in a location in close proximity to the works
2.1.5 Protection to Ice House (Stage 1 only)
The ice house will have a scaffold crash deck erected over the top of the building to protect against the unlikely event of any falling debris, this will be installed by the Demolition Contractors scaffold contractor who will provide all RAMs and design to carry out the works.
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2.1.6 Erection of Tree Protection
All required tree protection within the site will be erected in accordance with the issued drawing No LL454-400-0028.
2.1.7 Service Isolations.
The Demolition Contractor’s sub-contractor, will carry out this work. They will be responsible to supply all of their own method/risk assessments and will isolate all buildings for demolition.
2.1.8 Asbestos Identification
All asbestos indicated within the demolition surveys will require identifying prior to any operatives entering the buildings. The site supervisor will escort the Asbestos supervisor around each of the buildings; all asbestos products will be sprayed red with line paint to clearly show their locations. Any disturbed areas of asbestos will be fully cordoned off and appropriate signage posted. This will be carried out on all floors of all buildings.
2.1.9 Enabling Soft Strip
This will be carried out prior to the removal of any asbestos, the aim of this is to ensure a safe and clear access/egress route is available around the building for the asbestos operative’s transit routes. All waste from this will remain in the buildings at this time.
2.1.10 Asbestos Removal
The items of asbestos notified to the HSE will be removed by specialist licensed contractors. A separate method statement will be written for this. A 14 day notification period (ASB5) will be submitted to the HSE prior to these works commencing.
2.1.11 Final Soft Strip
In accordance with the demolition phasing the buildings will require soft stripping prior to demolition to remove rubbish, fixtures and fittings and non-load bearing walls, soft stripping of the building will enable the concrete/hard-core to be processed more efficiently and the contamination of the recycled hard-core is minimised. When all known hazardous materials have been removed and live services terminated the soft stripping of the building can commence. Redundant M/E can be removed upon disconnections being issued by
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the Client. The M/E removal will be carried out using reciprocating saws fitted with demolition blades and powered by a portable petrol generator. Working progressively through the building the items below will be removed using a combination of hand tools, mattocks, crowbars and alike in a general soft stripping exercise;
• Floors, Removal of all floor coverings and carpets etc
• Removal of all rubbish, furniture, equipment and stockpiled Materials � Walls, Removal of non-load bearing walls, plasterboard and partitions, cills, light
fittings and fixed shelving
• Paneling and sheet finishes to the walls.
• Ceilings, Removal of any suspended ceiling tiles, plasterboard finishes, suspension systems and light fittings.
• Toilets, Stripping out and removal of all toilet fixtures and fittings including toilet pans, sinks and cubicles.
• Removal of all surface mounted electrical and mechanical cabling and pipe work.
All waste will be removed from the buildings using the access doors. No material will be thrown out of any windows. The operatives will load wheelbarrows and walk all of the material out of the building to a recycling container positioned in a segregated area to be agreed with the Site Manager. The operatives will deposit the material on the ground. The material will then be picked up using a 360 machine fitted with a selector grab attachment for the loading of the skip.
2.1.12 Demolition of Buildings
The buildings will be demolished using a 360 excavator fitted with a selector grab attachment, at all times of demolition water will be sprayed from a hose and directed onto the area of work to act as a dust suppressant. The Demolition Contractor supervisor will ensure all segregation is in place and all buildings are empty prior to works commencing.
The machine operator will begin by removing a section of the roof, this material will be allowed to fall to the floor. The machine will work from left to right using the selector grab to remove the roof uniformly. With a section of the roof removed the machine will start to demolish down the front elevation of the building, the debris will be allowed to fall onto the floor and slab area of the building. At this stage any window frames, steel beams will be removed and placed into a segregated area for disposal.
The buildings will be demolished as sequenced below;
1 1
2
Stepped demolition sequence – area 1 demolished 1st
Stepped demolition sequence – area 1 demolished 1st, then area 2
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1
2
3
1
2
3
4
Stepped demolition sequence – area 1 demolished 1st, then area 2 and then
area 3
Stepped demolition sequence – area 1 demolished 1st, then area 2, then area 3
and finally area 4
The machine will then commence on the side walls of the building. These will be reduced down equally to maintain the stability of the building. The side walls will be reduced back to the next section of the roof to be demolished. Works will cease periodically for the slab area to be cleared of debris to maintain a clear working area.
Demolition work will then cease to allow a further 360 excavator fitted with a bucket attachment to enter the area and remove all debris for processing. This material will be stockpiled. The processing will separate any timber or metal from the hard-core with the clean hard-core being stockpiled prior to being crushed and left on site for future use by the Client (area to be agreed) or removed from site.
All debris removed will be placed into the relevant skip for disposal and recycling. The operator will work along the building continuing the demolition using the same process. All buildings will be left in a safe and stable condition at the end of each working day. This method of demolition will be repeated until the entire building has been demolished down to the ground floor slab.
2.1.13 Slabs & Foundations
The Demolition Contractor’s Supervisor will issue the machine operator a permit to dig on a daily basis. The area will be CAT scanned with a fully trained operative. The machine will pepper the entire slab of the building breaking the concrete into manageable size pieces; this can then be pulled up and stockpiled using the excavator fitted with a bucket attachment. This material will be processed to remove any metal reinforcing and moved to a separate area for removal from site using eight wheeled tippers. The foundations of the building will be broken up using the hammer attachment; the local area will then be probed for any further obstructions. The foundations will then be removed using the bucket attachment; this will also be processed and stockpiled at the agreed area for crushing.
2.1.14 Crushing
After the demolished material is sorted and the suitable for crushing separated, the material for crushing will be stockpiled in the appropriate location. This stockpile will be watered down on a regular basis.
The material will then be loaded into hopper of the crushing machine, which has water jets to mitigate dust spread, material will go through crusher and onto a conveyor belt,
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which also has water jests, to a stockpile. The stockpile will then be watered down at regular intervals.
From the stockpile the material will be used for the construction of the new access road.
All surplus material will be carted off site.
Machine above is indicative of crusher to be used.
2.1.15 Working hours
08.00am – 18.00pm Monday to Friday. 08.00am – 13.00pm Saturday.
No noisy work will be carried out outside of these times or on Sundays or Public holidays without written consent.
3. LABOUR FORCE
The workforce envisaged for each of these stages of work will be structured but not limited to the following:
1 x SMSTS Site Supervisor 3 x CPCS 360o excavator operator 6 x CSCS/CCDO General operatives
This list is not exhaustive.
4. TRAINING
All operatives will be competent and trained for the tasks undertaken. The arrangements for on the project training shall take the form of appropriate toolbox talks, work and or task briefings.
Prior to works commencing, the Supervisor will brief all operatives on the content of the method statement, PPE requirements and drugs & alcohol policy.
All Personnel will attend the Demolition Contractor Induction.
Records required: All machine / plant operators are to provide a valid original copy of their proof of training before commencing any machine operation, a copy will be kept on file in the main site office. All other personnel will provide a copy of their proof of training.
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5. LIFTING EQUIPMENT
None required.
6. PORTABLE TOOLS
Portable/Small tools that will be used for this works are as follows:
All plant and equipment used shall be in serviceable condition and subjected to daily or weekly checks in accordance with the relevant procedures and regulations. Copies of all relevant test certificates shall be retained in the main site file.
3 x 360o excavators & attachments 1 x crushing machine with built in waterjets
8. PROTECTION OF EMPLOYERS ASSETS
Throughout the works period all practicable measures shall be taken to protect the Employers Assets in accordance with the requirements of the contract.
Good housekeeping will be maintained throughout the works.
9. WELFARE FACILITIES
The Company will have suitable facilities to fully comply with current CDM Regulations, this will include a site office, drying room, sufficient toilets for both male/female and canteen area with hot/cold water, hand washing facilities and microwave and kettle. These facilities will be available on Day 1 of the works and will remain in place until all works are complete
10. STORAGE AND HANDLING OF HAZARDOUS SUBSTANCES AND MATERIALS
During the course of the works it may be necessary to use certain substances and materials which are considered hazardous to health if not used properly. All persons involved in the direct storage and handling of such materials shall be made fully aware of the risks and hazards outlined in the COSHH assessments, and the correct methods of working with such materials.
Relevant COSHH data sheets are listed in the Appendix section.
11. TEMPORARY SUPPORT/STRUCTURES/FALSEWORK
Scaffold crash deck to Ice House (By others). Tree Protection. All will be entered into Demolition Contractors temporary works register.
12. WORKING AT HEIGHTS
From suitable size access platforms erected by fully trained PASMA operatives
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13. WORK PERMITS AND LICENCES
The following permit systems shall be used for the work:- A permit to dig is to be self-issued on a daily basis.
14. FIRST AID
A list of the First Aiders shall be displayed on the site Notice Board placed in the Welfare Unit.
Trained First Aid personnel will be available on site on each and every shift.
The company Accident book and First Aid facilities are located within the site welfare and site managers facilities.
15. FIRE
A Fire point will be set up in close proximity to the works. To ensure risks of fire is addressed for each site operation, any hot works will be carried out once all combustible materials have been removed. The Supervisor will be immediately informed in the event of a fire and the Fire brigade and company management contacted as necessary.
16. EXCAVATION
There is no deep excavation planned in this section of work other than removal of the concrete slab and the footings. However, if required to excavate further this will be under an instruction from the site managerBefore any Excavation takes place the area is to be scanned with a CAT scanner and for fibre Optic cables Open Reach “Dial before you dig” team are to be contacted
The minimum PPE requirements for these works are the following:
Hard Hat to EN 397 Hi-vis vest or jacket to EN 471 Steel toe-capped safety boots to EN 345 Gloves to EN 388 Safety Glasses to EN1661F Other PPE to be worn shall depend upon the particular task undertaken.
18. ACCIDENTS, INCIDENTS, AND REPORTING OF INJURIES, DISEASES AND DANGEROUS OCCURRENCES (RIDDOR) 2013
Any of the above occurrences will be notified to the Demolition Contractor Manager/Supervisor. The Manager will take the appropriate measures to record the occurrence and notify the appropriate bodies, as required. Site Accident / Incident book will be located in the Site Manager’s office.
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19. EMERGENCY PROCEDURES
In the event of an emergency, operatives are advised to:
• Clear the area
• Raise the alarm
• Notify the Site Manager who will coordinate the emergency services and facilitate first aid if appropriate
• All operatives will go to the designated assembly point: as indicated in Site Induction.
20. TRANSPORTATION & SITE OPERATIVE PARKING
All vehicles are to observe the surrounding highway speed limits and the traffic management when travelling off road to reach the accommodation blocks. Vehicles will only use the access/egress route as indicated in Section 1.
Site operatives will be provided parking on the western side of the main house. It is envisaged that there will be approximately 10 operatives’ cars for stage 1 and 2
21. HOUSEKEEPING
Good housekeeping practices will be required at all times. The importance and methods of housekeeping shall be relayed to the workforce in the site induction and in toolbox talks. In the event of a complaint from a neighbour or a member of the public in relation to any site activity, it will be recorded in a designated logbook, stating the nature of the complaint, the cause and where appropriate, the remedial action taken.
22. ACCESS AND EGRESS TO AUTHORIZED PERSONNEL
Access and egress will be controlled. Only personnel who have received a site induction will be allowed to enter the site works area. Clear and unobstructed access to the section of work will be maintained at all times.
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23. NOISE AND VIBRATION
Works/operations are not expected to produce noise levels beyond 75dba.
24. AIR QUALITY AND DUST
The work area will be dampened down using water hoses to prevent dust from being generated. Items of plant that may emit air pollution shall be minimised by utilising modern plant in good working order and only running the plant for the time required and to avoid unnecessary idling of plant.
25. WASTE MANAGEMENT
All Materials to be relocated off site will be stockpiled on site then removed in skips to an approved waste transfer station.
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26. TRAFFIC MANAGEMENT
A Banksman will be in attendance to maintain safe access and egress. Vehicles will be banked safely in and out of site with the aid of the Banksman.
A portable jet wash will be located at the site entrances to operate a wheel wash to ensure that mud and debris is not trafficked onto the estate roads from vehicles exiting the site. Regular monitoring of the highways and footpaths will take place to ensure that the surrounding areas are maintained free of debris
27. FUEL
On site refuelling will be facilitated at a cordoned refuelling point. The location of this will be decided by the site Supervisor. The fuel will be contained within a double bunded tank with a lockable hose. Spill kits and fire extinguishers will be sited at the location and the appropriate signage put in place.
28. RECORDS AND DOCUMENTATION
All records generated on the Project shall be maintained on site for the duration of the work and then archived. Relevant records are to be included in the Health and Safety File.
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I confirm I have been given information about and understand the following: - • The Method Statements relevant to the project. • The Health and Safety at Work Act. • The Company's Policy for health, safety and welfare; especially dedicated Risk and COSHH
Assessments. • Site Rules • Fire procedures (including the location and use of extinguishers). • First aid - names and locations of First Aid Appointed Persons and introduction to them,
position of first aid boxes and rules for their use. • Use and availability of protective clothing and equipment. • General hazards in and around work area. • Specific hazards in work area. • Procedures for reporting accidents, injuries and property damage. • Safe systems of work, where applicable. • Welfare - location of mess room, toilets etc. and any other welfare matters.
METHOD STATEMENT BRIEFING FORM MS REF NO: - G/777/11671/DW/00
Pegasus Life Ltd., c/o Mr Graham Starling,Gleeds,95 New Cavendish Street,London,W1W 6XF
Arboricultural Method Statement for the protection of trees along Seal Drive andWildernesse Avenue during the proposed re-development at Wildernesse Estate, Sevenoaks, Kent, TN15 0EA
Dear Mr. Starling,
Thank you for your instruction to provide an Arboricultural Method Statement for the
protection of trees along Seal Drive and Wildernesse Avenue which will serve as the main
access roads during the Demolition and Construction Phase of the approved re-development
(Planning Application Ref no.: 14/01562/OUT) at Wildernesse House, Wildernesse Avenue,
Sevenoaks.
I have been supplied with the Demolition Method Statement (Ref no.:
G/777/11671/DW/00) compiled by 777 Demolition, dated 27th May 2015, Demolition and
Construction Vehicle Access Plans (Fig 1) by Odyssey Markides, dated May 2015, Tree
Protective Fencing Plan – General Arrangement (drawing no.: LL454-400-0028),Tree Protective
400-0053, LL454-400-0054, LL454-400-0055) by Camlins Landscape Architects, dated May
2015, the Construction Management Plan revision A, dated 18th August 2015, and the Traffic
Management Plan revision 01, dated August 2015.
The construction route for the demolition and enabling works and construction activities
will be from the A25 via Seal Drive and into Wildernesse Avenue, as shown at Appendix A, and
will serve as the main access route for the duration of the development.
Seal Drive and Wildernesse Avenue are both single carriageway roads with a sealed
tarmac surface. The trees are at varying distances to the road edge and are growing within a
grass verge. As shown in photographs 1 and 2 below (Seal Drive).
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Arboricultural Method Statement for the Protection of Trees at Our Ref.: AR/3416AMS/rg Rev ASeal Drive and Wildernesse Avenue, Sevenoaks, Kent, TN15 0EA 2nd September, 2015
I visited site on the 4th August 2015 and inspected the trees growing along either side of
Seal Drive, particularly the three trees growing adjacent to the A25 and Seal Drive junction. The
trees comprise predominantly lime but with English oak towards the south-eastern end. Those
trees along Wildernesse Avenue were also inspected.
The protection status of the trees has not been investigated, however the site, including
Seal Drive and Wildernesse Avenue are situated within Wildernesse Conservation Area.
This method statement has been drawn up to comply with the recommendations of
British Standard BS 5837: 2012, Trees in relation to design, demolition and construction –
Recommendations [BS5837].
I have set out the protection and working methodology relevant to trees under the
following headings, along with three appendices:
1. Tree pruning,
2. Tree protection along Seal Drive and Wildernesse Avenue,
3. Trunk wrapping,
4. General matters.
Appendix A. Vehicle Access Plan by Odyssey Markides
Appendix B. Tree Protective Fencing Plan – General Arrangement by Camlins
Landscape Architects
Appendix C. Trunk Wrapping Detail
1. Tree Pruning.
1.1 The vehicles accessing the site will vary between small vans, 40ft skip lorries, four axle
trucks to flatbed articulated vehicles.
1.2 The pruning requirements to create the required headroom underneath the crown
overhang to Seal Drive and Wildernesse Avenue are based on the approximate
maximum vehicle height using the access road, and I recommend a 4m clearance is
provided.
Photograph 2. Looking south-east along
Seal Drive
Photograph 1. Looking north-west along
Seal Drive
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Arboricultural Method Statement for the Protection of Trees at Our Ref.: AR/3416AMS/rg Rev ASeal Drive and Wildernesse Avenue, Sevenoaks, Kent, TN15 0EA 2nd September, 2015
1.3 Where branches overhang the roads these are to be pruned back in line with the road
edge to the recommended height of 4m. This will require the removal of small branches
only and will not have any significant effect on the health and physiological condition of
these trees and will not detract from the character or appearance of Seal Drive and
Wildernesse Avenue.
1.4 In relation to potential large loads using the access road, appropriate measures will be
implemented at such time in order to minimise potential damage to overhanging
branches above 4m, and may include additional pruning or the temporary tying back of
branches.
1.5 Pruning works will be required to be in accordance with British Standard 3998:2010 Tree
work - Recommendations [BS3998].
2. Tree Protection.
2.1 With reference to the Geological Survey Drift Map, Sheet 287, Sevenoaks, the site is on
the Lower Greensand Group, namely Sandgate Formation which consists of fine sands,
silts and silty clays, and Folkestone Formation which comprises medium and coarse-
grained, well-sorted cross-bedded sands and weakly cemented sandstones. Quaife
Woodlands has not investigated the clay content of the soil and subject to a formal soil
investigation I have assumed there to be some clay present. Clay is a shrinkable soil,
susceptible to compaction which is harmful to tree roots.
2.2 Where tree roots pass beneath Seal Drive and Wildernesse Avenue, the road itself
provides adequate ground protection to prevent root damage from compaction as a result
of increased road usage. There is considerable root mass beyond the RPA and even if
there were to be some loss to root fibre function under the road, overall it will be a minor
proportion of the assimilative root mass. Consequently the use of Seal Drive and
Wildernesse Avenue as the main demolition and construction access roads will not cause
the trees any discernible harm. On that basis I am satisfied that no additional ground
protection is required.
2.3 Some form of separation barrier is required to prevent vehicles encroaching onto the
grass verge along both sides of Seal Drive, to prevent direct damage to the trunks of
retained trees, and to avoid compaction of the soil, which can arise from the single
passage of a heavy vehicle, and so that the trees root functions remain unimpaired.
2.4 Within the verge area the combined zones of RPAs form the Construction Exclusion
Zone [CEZ] and will be protected using a series of timber bollards positioned at 3m
intervals along both sides of Seal Drive, and as shown at Appendix B, and similar to
those recently installed along Wildernesse Avenue.
2.5 The holes will be hand dug with a “shuv-holer” or something similar, which is a tool
enabling holes to be dug at the required diameter, thus minimising the extent of
excavation, and to a depth of approximately 400mm to 500mm. Any roots smaller than
25mm diameter may be pruned back, making a clean cut. Where roots occur in clumps
or roots over 25mm are identified these will be severed following consultation with the
appointed arboriculturalist, or the spacings of the timber bollards moved accordingly.
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Arboricultural Method Statement for the Protection of Trees at Our Ref.: AR/3416AMS/rg Rev ASeal Drive and Wildernesse Avenue, Sevenoaks, Kent, TN15 0EA 2nd September, 2015
2.6 This timber bollards are to be set in place before any work commences on site.
3. Trunk Wrapping.
3.1 Three trees at the junction of the A25 and Seal Drive on the eastern side are in close
proximity to the road edge and require trunk protection.
3.2 I have been advised that trunk wrapping using padding and chestnut battens is the
preferred method of tree protection, and I attach a method for Trunk Wrapping at
Appendix C.
4. General Matters.
4.1 The protection measures are to be overseen by an individual, e.g. the Site Agent, to be
responsible for all arboricultural matters on site. There will be an initial induction meeting
with all those involved in attendance. This person must:
a) be present on site for the majority of the time,
b) be aware of the arboricultural responsibilities,
c) have the authority to stop any work that is causing, or has the potential to
cause harm to any tree,
d) be responsible for ensuring that all site operatives are aware of their
responsibilities toward trees on site and along the access roads, and the
consequences of any failure to observe those responsibilities,
e) make immediate contact with the local authority and/or a retained
arboriculturalist in the event of any tree related problems occurring, whether
actual or potential.
I have taken account of the information provided to me and I am satisfied that the tree
pruning requirements and tree protection measures I have set out with regard to the use of Seal
Drive and Wildernesse Avenue as the main demolition and construction access are fully in
accordance with current standards and guidance.
Yours sincerely,
Becki Gawthorpe
Appendices:Appendix A – Vehicle Access Plans Appendix B – Tree Protective Fencing Plan – General Arrangement Appendix C – Trunk Wrapping Detail
(Adapted from AS4970 2009 Protection of trees on development sites)
1. Where a tree is to be retained and a Construction Exclusion Zone [CEZ] cannot beadequately established due to restricted access e.g close proximity of trees to access, thetrunk and branches in the lower crown will be protected.
2. The trunk and branches will be protected by wrapping two layers of hessian or carpetunderfelt around the trunk and branches for a minimum of 2m or as lower branches permit.
3. Wire or rope is used to secure 75x50x200 mm hardwood battens together around the trunk.These battens are not to be nailed or screwed to the trunk or branches.
4. The number of battens to be used is as required to encircle the trunk and the battens are toextend to the base of the tree.
5. The trunk protection is to be erected before any work commences on site, is to remain in situundamaged for the duration of all work or each phase, and only to be removed once all workis completed.
AS4970 2009 - Figure 4: Examples of Trunk, Branch and Ground Protection
