Transmittal - Snyder Construction

Transmittal

To: Durham College of Applied Arts andTechnology

Project No.: 18130

Address: 2000 Simcoe St N Date: October 29, 2018

Oshawa, ON L1H 7K7 Your No.:

Attention: Mr. Donny Gough

Project Name: Durham College Whitby Campus Weld Shop Storage Shed

For your: “ Approval Via: “ Mail

Distribution “ Courier

Information and use “ By hand

“ Review and comment “ To be picked up

Action taken: “ Reviewed “ Fax

“ Reviewed as modified E-mail

“ Revise and resubmit

“ Not reviewed

Qty.: DrawingNo.:

IssueNo.:

RevisionNo.:

Description:

1 email - - Addendum No. 1

Remarks: c.c. Mr. Doug Crossman, Durham College of Applied Arts and Technology

___________________________________Doug McLaughlin, P. Eng.

Form M-1 Rev. 1 12-07-02Transmittal.wpd

Addendum No. 1

Project No.: 18130

Date: October 29, 2018

Project: New Weld Shop Gas Storage Building, Whitby Campus, 1610 ChamplainAvenue, WhitbyDurham College of Applied Arts and Technology

The following information supplements and/or supersedes the bid documents issued on October 18, 2018This Addendum forms part of the contract documents and is to be read, interpreted, and coordinated with all otherparts. The cost of all contained herein is to be included in the contract sum. The following revisions supersedethe information contained in the original drawings and specifications issued for the above-named project to theextent referenced and shall become part thereof.

GENERAL NOTES

1 .1 Refer to the attached drawings S101, S201, S301, and S501 issued for permit and tenderoutlining revised framing requirements for the new storage building enclosure.

1 .2 Refer to the attached mechanical addendum MA-1 dated October 29, 2018.

1 .3 All bidders shall include a $3,000.00 cash allowance in their bid for independent testing andinspection.

1 .4 Refer to the mechanical for the revised scope of work inside the existing building.

1 .5 All winter heat for construction of the new building shall be included in the base bid.

END OF ADDENDUM NO. 1

Barry Bryan AssociatesArchitects, Engineers, Project Managers

Doug McLaughlin, P. Eng

DM/gs

Attachments:Structural Combined Drawings (4 Pages)Sharma & Partners Revised Mechanical Addendum MA-1 (18 Pages)

Form 6.1-3 Rev. #0 19-06-0118130 Addendum No. 1.wpd

CONCRETE

LOCATION CLEAR COVER

CONCRETE REINFORCEMENT

GENERAL

STRUCTURAL STEEL

BEARING PLATE SCHEDULE

MARK SIZE ANCHORAGE REMARKS

COLUMN SCHEDULE

C1

MASONRY

CONCRETE BLOCK MASONRY

COMPRESSIVE STRENGTH (MPa)

LOCATION NET

GROSS (f'm) FOR

HOLLOW BLOCK

GROSS (f'm) FOR SOLID

OR GROUTED BLOCK

ASPHALT PAVING

C2

LOCATION

DESIGN STRENGTH

(28 DAYS)

SLUMP

EXPOSURE

CLASS

MASONRY WALL SCHEDULE

MARK THICKNESS VERTICAL REINFORCING

HORIZONTAL

REINFORCING

REMARKS

METAL ROOFING

INSULATION

FLOATING CONCRETE

SLAB FOUNDATION

WALL PLATE SCHEDULE

MARK SIZE ANCHORAGE REMARKS

NAME OF PROJECT :

LOCATION OF PROJECT :

OBC Reference

No

Addition

Addition and Renovation

3.01 Project Type:

Change of use

Yes

entire building

none

Non-combustible Required

3.05

3.10

3.11

3.12

3.09

3.14

3.15

3.13

Sprinkler System

Standpipe System

Fire Alarm System

Actual construction

ConstructionType:

Number of streets/

fire fighter access:

Water Service/

Supply is Adequate

Combustible Permitted

3.02Major Occupancy

Classification:

3.1.2.1.(1)

3.2.2.10 & 3.2.5

3.2.2.20. - 83

3.2.1.5 & 3.2.2.17

3.2.9

3.2.4

3.2.2.20. - 83 &

3.2.1.4

3.2.3

Gross Area (m²)[A] 1.4.1.2.

selected compartments

selected floor areas

3.2.2.20. - 83 &

3.2.1.4

CERTIFICATE OF PRACTICE NUMBER : 5192

250 WATER STREET, SUITE 201

WHITBY, ONTARIO, CANADA. LIN 0G5

TEL : (905) - 666 - 5252

(Toronto) (905) - 427 - 4495

FAX : (905) - 666 - 5256

Durham College, Whitby Campus,

Weld Shop Storage Shed

1610 Champlain Avenue, Whitby, Ontario

Ontario Building Code

Data Matrix Part 3

3.16 Importance

Category:

4.1.2.1. (3) &

T4.1.2.1.B

Low Low human Occupancy Post-disaster shelter

DATE :

3.00Building Code Version: O. Reg. 332/12 Last Amendment: O. Reg. 191/14

New Renovation

Description ____________________________________________________

Use

___________________________________________

___________________________________________

___________________________________________

Occupancy

_________________

_________________

_________________

-

-

-

-

3.03Superimposed

Major Occupancies:

Yes No

Description ____________________________________________________-

Building Area (m²)3.04 Existing

_________

_________

_________

_________

Description

_________________________________

_________________________________

_________________________________

Total=

-

-

-

-

New

_________

_________

_________

_________

-

-

Total

_________

_________

_________

_________

-

-

Existing

_________

_________

_________

_________

Description

_________________________________

_________________________________

_________________________________

Total=

-

-

-

-

New

_________

_________

_________

_________

-

-

Total

_________

_________

_________

_________

-

-

[A] 1.4.1.2.

3.2.2.7

[A] 1.1.2.

3.06 Mezzanine Area

(m²)

Existing

_________

_________

_________

_________

Description

_________________________________

_________________________________

_________________________________

Total=

New

_________

_________

_________

_________

Total

_________

_________

_________

_________

3.2.1.1

3.07 Building Height [A] 1.4.1.2 &

3.2.1.1

______________ Storeys above grade ________ (m) Above grade

______________ Storeys below grade

____________ street(s)

3.08 High Building Yes No

____________ Group/ Div. __________________________

Not Required

Proposed:

Required

basement

in lieu of roof rating

Not Required Required

Not Required Required

Restriction:

Non-combustibleCombustibleActual:

NoHeavy Timber Construction:

Combination

Yes

Normal

High Minor storage building Explosives or hazardous substances

Post-disaster

3.17 Seismic Hazard

Index:

3.19 Barrier-free Design: Yes Explanation ______________________________________

No

3.18 Occupant Load: Floor Level/ Area Occupancy Type Based On Occup. Load

__________________ ________________ _________ ________

__________________ _______________ _________ ________

- - - -

(I Fa Sa (0.2))=_________________________

Seismic design required for Table 4.1.1.18. items 6 to 21:

((I Fa Sa (0.2))> or = 0.35 or Post-disaster)

0

E

4.1.2.1. (3)

4.1.8.18.(2)

No Yes

3.1.17

3.8

3.20 Hazardous

Substances:

Yes Explanation ______________________________________

No

3.3.1.2 &

3.3.1.19

3.21 Required Fire

Resistance

Ratings:

Horizontal Assembly Rating Supporting Non combustible

Assembly (H) in lieu of rating?

Floors over basement _______ __________

Floors _______ __________

Mezzanine _______ __________

Roof _______ __________

-

No Yes N/A

-

No Yes N/A

-

No Yes N/A

-

No Yes N/A

3.22 Spatial Separation:

3.23 Plumbing Fixture

Requipments:

Ratio: Male/Female = 50:50 Except as noted otherwise

Floor level/ Area Occupant OBC Fixtures Fixtures

Load Reference Required Provided

__________ _____ ____ ________ ______ _______

__________ _____ ____ ________ _______ _______

__________ ____ ____ ________ _______ _______

__________ _____ ____ ________ _______ _______

Noncombustible

construction

Combustible

construction w/

noncombustible

cladding

(Hours)

FRRProposed

or H/L(m)

L.D. L/H

North

South

Wall Area

Of EBF

(m²)

Permitted

Max. % Of

Openings

% Of

Openings

East

(Addition wall areas contiued below )

-

West

-

-

-

3.7.4

3.24Energy Efficiency: Compliance Path: ___________________________________________________

Climatic Zone: __________ OBC Table: _____________

N/A

N/A

3.25 Notes:

BARRY BRYAN ASSOCIATESNAME OF PROJECT :

N/A

WALL TYPES SCHEDULE

ROOF TYPES SCHEDULE

GENERAL NOTES AND

SCHEDULES

S101

ASSOCIATESBARRY BRYAN

PROJECT NO:

FILE:

DRAWING NO:

SCALE:

DATE:

CHECKED BY:

DRAWN BY:

DESIGN BY:

DRAWING:

PROJECT:

REVISIONSNO. DATE BY

DRAWINGS ARE NOT TO BE USED FOR CONSTRUCTION UNTIL SIGNED

UPON REQUEST. REPRODUCTION OF DRAWINGS IN PART OR WHOLECOPYRIGHT PROPERTY OF THE CONSULTANT AND MUST BE RETURNEDALL DRAWINGS, SPECIFICATIONS AND RELATED DOCUMENTS ARE THE

AND SEALED BY THE CONSULTANT.

WITHOUT THE PERMISSION OF THE CONSULTANT IS FORBIDDEN.

CHECK AND VERIFY ALL DIMENSIONS AT THE SITE.

ISSUESNO. DATE BY

DO NOT SCALE THE DRAWINGS.

DURHAM COLLEGE

WHITBY CAMPUS

WELD SHOP

STORAGE SHED

1610 CHAMPLAIN AVENUE

WHITBY, ONTARIO

18130

LOCATION PLAN

N.T.S.

ASPHALT LAP JOINT

xx

xx

xx

xx

xxxxx

xx

xx

xx

xx

x

x

x

x

x x x

x

x

xx

x x x x x


PROJECT NO:

FILE:

DRAWING NO:

SCALE:

DATE:

CHECKED BY:

DRAWN BY:

DESIGN BY:

DRAWING:

PROJECT:







ISSUESNO. DATE BY


DURHAM COLLEGE

WHITBY CAMPUS

WELD SHOP

STORAGE SHED


WHITBY, ONTARIO

181301:50

FLOOR PLAN

1:50

REFLECTED CEILING PLAN

FLOOR PLANS

S201

1:50

FOUNDATION PLAN

1:50

ROOF FRAMING PLAN

1:50

DEMOLITION PLAN

1:50

ROOF PLAN


PROJECT NO:

FILE:

DRAWING NO:

SCALE:

DATE:

CHECKED BY:

DRAWN BY:

DESIGN BY:

DRAWING:

PROJECT:







ISSUESNO. DATE BY


DURHAM COLLEGE

WHITBY CAMPUS

WELD SHOP

STORAGE SHED


WHITBY, ONTARIO

18130

1:50

BUILDING SECTION

1:50

WEST ELEVATION

1:50

NORTH ELEVATION

1:50

EAST ELEVATION

1:50

SOUTH ELEVATION

BUILDING SECTION AND

EXTERIOR ELEVATIONS

S301

1:50

BUILDING SECTION

1:25

DETAIL SECTION


PROJECT NO:

FILE:

DRAWING NO:

SCALE:

DATE:

CHECKED BY:

DRAWN BY:

DESIGN BY:

DRAWING:

PROJECT:







ISSUESNO. DATE BY


DURHAM COLLEGE

WHITBY CAMPUS

WELD SHOP

STORAGE SHED


WHITBY, ONTARIO

18130

DETAIL SECTIONS

S501

1:10

DETAIL

1:10

DETAIL

1:10

TYPICAL FENCE DETAIL

1:10

DETAIL

1:10

DETAIL

1:10

DETAIL

1:30

CORNER BAR DETAIL

1:10

TYPICAL INTERIOR WALL DETAIL

1:10

TYPICAL COLUMN CONNECTION DETAIL

1:10

DETAIL

1:10

DETAIL

SHARMA & PARTNERS INC. I 85 Curlew Drive, Unit 108 Toronto, ON M3A 2P8 | t: 416-291-8822

SHARMA & PARTNERS INC. Mechanical Addendum

Client Durham College, 1930 Simcoe road N, Oshawa Project: Welding Shop Piping, Whitby.

Mechanical Addendum Issue Date: Project Number:

MA-1 October 29, 2018 2018-1044

The following items are changes to the tender contract documents for this project. Contractor shall include the cost of these addendum items in the tender quotation. All material and workmanship are to be described in the contract documents unless otherwise stated. Contractor shall identify addendum numbers included in the tender quotation when submitting tender / bid form.

1.0 DRAWINGS & SPECIFICATIONS( Spec Section 20 07 00 Piping system reissued):

1.1 Section 20 07 00 Welding shop Piping system issued with the tender package contains information

requested during the site visit. This section includes types of piping, valves, fittings, joints, cylinders, manifolds, flash arresters, regulators, check valves, detection systems, accessories etc. to be used in the project. All products used shall be code compliant as noted and TSSA approved prior to installation.

2.0 STAGING OF SCOPE OF WORK:

2.1 Durham College has decided to complete ONLY THE OUTSIDE SCOPE OF WORK including the

Gas Cylinders, headers, distribution and new piping connections to existing pipe penetrations serving the existing Phase 2 weld Shop areas.

2.2 Existing Piping through the wall and all interior piping distribution installation shall be in Stage 2 scope

and NOT INCLUDED IN THIS TENDER PACKAGE. Interior shut off valves and gas detection sensors at the wall entry shall remain and shall be tested and certified by outside new system installation.

2.3 Contractors shall submit tender quotation for the outside work only.

End of Addendum

Durham College Whitby Campus SECTION 20 07 00 Welding Shop Gas Piping WELDING GAS PIPING SYSTEM

20 07 00-WELDING GAS PIPING SYSTEM Page 1 of 9

1. GENERAL

1.1 STANDARDS

.1 Provide welding gas installations compliant with CAN/CSA-W117.2-12 – “Safety in welding, cutting, and allied processes” and generally as described in NFPA 51 Standard for the Design and Installation of Oxygen–Fuel Gas Systems for Welding, Cutting, and Allied Processes.

1.2 SUBMITTALS

.1 Shop Drawings: Submit shop drawings for all products specified in Part 2 of this Section except for the pipe and fittings.

.2 Test Data: Submit piping system leakage test sheets as specified.

2. PRODUCTS AND EXECUTION

2.1 PIPE, FITTINGS AND JOINTS

.1 Piping and fittings shall comply with ASME B31.3, Process Piping shall be at least Schedule 40,and fittings shall be at least standard weight in sizes up to and including 6 in. nominal, except as otherwise described hereunder. Materials for fabrication, installation, cleaning, and testing of piping systems shall be selected in accordance with sound engineering practice. Piping shall be steel or seamless copper, brass, or stainless steel tubing, except as provided hereunder.

.1 For Oxygen, Argon and Mixed Gases Piping Systems, use Schedule 40 pipe

for pressures not exceeding 1034Kpaand Schedule 80 for higher pressures. .2 For Acetylene Piping Systems, piping shall be steel. Unalloyed copper shall

not be used except in listed equipment. Except in cylinder manifolds, acetylene shall not be piped or utilized at a pressure in excess of 103 kPa (15 psi) gauge or 206 kPa (30 psi) absolute. This provision is not intended to apply to the storage of acetylene in cylinders manufactured to DOT specifications.

.3 For Oxygen, argon and Mixed Gas Piping Systems, hose connections and

hose complying with NFPA 51 shall be permitted to be used to connect the outlet of a manifold pressure regulator to piping, providing the working gauge pressure of the piping is 1.722 MPa (250 psi) or less and the length of the hose does not exceed 1.5 m (5 ft). Hose shall have a minimum bursting gauge pressure of 6.9 MPa (1000psi)

.2 Piping Joints shall be as follows:

.1 Joints in steel piping shall be welded, threaded, or flanged. Fittings, such as ells, tees, couplings, and unions, shall be permitted to be rolled, forged, or cast steel, malleable iron, or nodular iron. Gray or white cast iron fittings shall be prohibited.



.2 Joints in brass or copper pipe shall be welded, brazed, threaded, or flanged. If of the socket type, they shall be brazed with silver brazing alloy or similar high melting point filler metal.

.3 Joints in seamless copper, brass, or stainless steel tubing shall be listed or

approved gas tubing fittings, or the joints shall be brazed. If of the socket type, they shall be brazed with silverbrazing alloy or similar high melting point filler metal.

.4 Tapered threaded connections in oxygen pipe shall be tinned or made up with

‘Teflon’ (polytetrafluoroethylene) tape or other thread sealants suitable for oxygen service. Sealants shall be applied to the externally threaded portion only.

.3 Piping shall be run as directly as practical and protected against corrosion and physical damage, and allowance shall be made for expansion, contraction, jarring, and vibration.

.4 Piping under buildings or foundations shall be prohibited or provided with a vented casing or located in a well ventilated tunnel. Oxygen piping shall be permitted to be placed in the same tunnel, trench, or duct with fuel gas pipelines, provided there is good natural or mechanical ventilation and there is no contact with oil.

.5 Low points in piping and equipment where moisture can collect, shall be drained into drip post constructed so as to permit pumping or draining out the condensate at necessary intervals. Drain valves having outlets normally closed with screw caps or plugs shall be installed for this purpose. Open end valves or petcocks shall not be used, except that in drips located outdoors and underground and not readily accessible, valves shall be permitted to be used at outlets if they are equipped with means to secure them in the closed position. Pipes leading to the surface of the ground shall be cased or jacketed where necessary to prevent loosening or breaking.

.6 Readily accessible gas valves shall be provided to shut off the gas supply to buildings in cases of emergency. A shutoff valve shall be installed in the discharge from the gas holder, manifold, or other source of supply.

.7 Cleaning:

.1 Fittings and lengths of pipe shall be examined internally before assembly and, if necessary, freed of scale or dirt. Oxygen piping and fittings shall be washed out with a solution that will remove grease and dirt but that will not react with oxygen.

.2 Piping shall be thoroughly blown out after assembly to remove foreign

materials. For oxygen piping, oil free air or oil free nitrogen shall be used. For other piping, air or inert gas shall be permitted to be used.

.8 Protective Equipment, Hose, and Regulators shall be installed only for the service for which it is intended and as recommended by the manufacturer.



.9 Pressure Relief for Piping Systems shall be of Listed or approved type and shall be installed in fuel gas, oxygen and mixed gas piping if the maximum design pressure of the piping or the system components can be exceeded. These devices shall be set to discharge at not more than the maximum design pressure of the piping or system components and to a safe location. Pressure relief devices in pressure regulators in the system shall not be used to fulfill this provision.

.10 Listed or approved protective equipment shall be installed in the fuel gas piping. be located in the main supply line, or at the head of each branch line, or at each location where fuel gas is withdrawn. In all cases, fuel gas serving an oxygen–fuel gas device shall flow through a protective device. Backflow protection of the fuel gas supply also shall be provided at the station outlet by a listed or approved device that will prevent oxygen from flowing into the fuel gas system.

.11 The pressure relief device shall be located on the downstream side of the backflow and flashback protection devices. The vent from the pressure relief device shall be at least as large as the relief device outlet and shall be installed without low points that can collect moisture. I flow points are unavoidable, drip pots with drains closed with screw plugs or caps shall be installed at the low points. The vent terminus shall not endanger personnel or property through gas discharge, shall be located away from ignition sources, shall terminate in a hood or bend, and shall discharge outdoors at a safe location. Vent pipes shall be galvanized steel.

.12 Supply and install relief valves on each AC, O, AR, MIG, main piping at high level and pipe to outside through wall to release pressure outdoor. (Match existing relief location).

.13 If pipeline protective equipment incorporates a liquid, the liquid level shall be maintained, and an antifreeze shall be permitted to be used to prevent freezing. Fuel gas for use with equipment not requiring oxygen shall be withdrawn upstream of the piping protective devices.

.14 Testing:

.1 Piping systems shall be tested and proved gastight and leak free in accordance with ASMEB31.3, Process Piping at minimum 100psi or 150% of the operating pressure whichever is greater.

.2 Where combustible gas lines or other parts of equipment are being purged of

air or gas, sources of ignition shall not be permitted near uncapped openings.

.15 Painting, Signs and Labels:

.1 Underground pipe and tubing and outdoor ferrous pipe and tubing shall be covered or painted with a material for protection against corrosion.

.2 Station outlets shall be marked to indicate the name of the gas in the

connected pipe. .3 Signs clearly establishing the location and identity of section shutoff valves

shall be provided.



.4 Labels assist in identifying materials conveyed in gas piping systems shall comply with ANSI Bulletin A13.1 and local codes.

.5 Paint all exposed piping to outdoor with water proof external application paint.

2.2 WELDING GAS HIGH PRESSURE CYLINDER MANUAL MANIFOLD SYSTEM

.1 Provide a shutoff valve on either side of the cylinder banks to switch over cylinder banks manually.

.2 The following Safety Standards and Codes shall be applicable:

.1 Compressed Gas Association (Pamphlets V-1, E-1, G-1) .2 American National Standards Institute (Pamphlets B-57-1) .3 National Fire Protection Association (Pamphlets NFPA-51) .4 UL listed component regulators and valves

.3 The Unit shall be frame mounted with removable cover for easy access to internal components and include all line, supply, reserve and intermediate pressure gauges, changeover valves and solenoid valves compatible with the gas service. Powder coated steel mounting frame and with durable ABS plastic cover. Cover draw latch shall be lockable for security. Wall or stand mount as required by site conditions.

.4 ½” NPT (F) outlet connection. Inlet size: 1-11½” NPS (M)

.5 Adjustable delivery pressure –– 0-200 PSIG for Oxygen, Inert, CO2. Maximum Inlet – 3000 PSIG Maximum Temperature - 140°F Minimum Temperature - 0°F High flow capacity –– 3500 SCFH air @ 70°F, –– Flow coefficient Cv = 0.238.

.6 The manifold shall have a two-year warranty, while the switchover mechanism shall have a five year warranty.

.7 Gas Pipeline heaters. Provide 1000W heaters unless otherwise specified, suitable for the gas service.

.8 Acceptable products are:

.1 The Victor VM2000 Series .2 Rexarc Electronic Series

2.3 HYDRALIC FLASH ARRESTORS

.1 Provide on manifolds with two or more Acetylene Gas Cylinders and where indicated, hydraulic Flash back arrestors. These systems are designed to provide protection via the use of ethylene-glycol in the unit. Each unit shall have a pressure relief valve which provides additional protection to the system in the event of over-pressurization. Hydraulic Arrestors shall be FM approved.




.1 Victor or equal approved. Maximum flow is 1000 SCFH for the FB-2A and 300 SCFH for theFB-1A

2.4 PIPELINE – STATION OUTLET AND REGULATOR SET

.1 For each weld station and as indicated, provide station regulators fitted with the appropriate station style CGA connections for use with oxygen, inert or fuel gases.

.2 Station Outlet Protective Equipment: A listed or approved shutoff valve shall be installed at each outlet and located on the upstream side of other station outlet equipment. A listed or approved backflow check valve shall be installed at each station outlet. When a P F device is located at the station outlet, an additional check valve is not required in the fuel gas line. If the station outlet is equipped with a detachable regulator, the outlet shall terminate in a union connection that complies with CGA E3.

.3 If the station outlet is connected directly to a hose, the outlet shall terminate in a union connection complying with CGA E1, Standard Connections for Regulator Outlets, Torches, and Fitted Hose for Welding and Cutting Equipment. Station outlets shall be permitted to terminate in pipe threads to which permanent connections are to be made, such as to a machine.

.4 Station outlets shall be equipped with a detachable outlet dust cap that shall be secured in place except when a hose, a regulator, or piping is attached.

.5 Hose and hose connections for oxygen and fuel gas service, including hose used to connect portable outlet headers to piping systems, shall comply with CGA E1.

.6 Pressure Regulators shall be used only for the gas for which they are intended. The regulator shall have 4 port forged brass body with high strength zinc-aluminum housing cap, all to meet or exceed CGA E-4 ETL and listed to UL 252. The regulator shall have color coded, impact absorbing, adjusting knob and safety knob and 2.5” gauge with relevant artwork. Provide side entry or rear entry inlet versions as required and with overall sizes to suit space limitations.

.7 Maximum inlet pressure of 200 PSIG.

.8 Acceptable Products are:

.1 Victor, EDGE EST4, or equal and approved.

2.5 PIPELINE – HIGH PRESSURE HEADER AND EXTENSIONS

.1 All Manifolds shall be expandable to meet changing application requirements.

.2 Construction shall be factory-fabricated and tested brazed brass for maximum leak protection rated for 3000 PSIG and end-capped and with right or left side expansions to accommodate future expansion needs.

.3 Manifolds shall have 1” x 11½” NPS Connections.



.4 High-pressure Pigtails shall be of high purity brass or stainless models and shall be complete with Check valves and as follows:

.1 24 inch flexible

.2 Acetylene models equipped with dry flash arrestors

.5 Provide at least two spare hose connections on each header for future capacity increase of each gas and liquid system.


.1 Victor extensions Model HER and HEL .2 Rexarc

2.6 FLASH ARRESTORS AND CHECK VALVE

.1 Supply and install CONCOA Model EN730 1 15/Fuel gas to 50 PSIG on supply pipe line of acetylene for all existing and new pipelines.



2.8 GAS FLOWMETERS

.1 Provide Flowmeters for precision, gas-flow measuring. Instruments shall be designed for use in laboratories and specific MIG/TIG welding applications. Flowtubes and outer covers shall be of impact-resistant Lexan for maximum durability and service life.

.2 Acceptable products are: .1 Victor extensions Model HER and HEL .2 Rexarc

2.9 GAS BALL VALVES

.1 Provide CSA/TSSA approved ball type or lubricated plug type shut-off valves to isolate equipment, and wherever else shown. Provide unibody bronze ball valves, rated 300 W.O.G., plated brass ball with Teflon seats, reinforced stem packing and ball thrust washer with adjustable stem packing gland.

.2 Ensure that valves are located for easy accessibility and maintenance.



2.10 GAS CHECK VALVES

.1 Gas check valves shall have armored and rounded inner valve which is cleanable and easily replaceable and suitable for the particular gas service.

2.11 GAS DETECTION CONTROLLER

.1 Provide comprehensive monitoring of flammable, toxic and oxygen gas hazards in potentially explosive atmospheres with adjustable detector operation LCD and magnet switches and non-intrusive operation. System shall be compliant with UL, INMETRO, ATEX, IECEx, CSA, KTL, PA,GB and CCCF standards.

.2 Controller to accept up to 16 inputs from numerous sensor types; Inputs may be analog or Modbus allowing data retrieval via RS-485 with 8 channel display mode and option boards. A graphic LCD displays monitored data as trends, bar graphs and engineering units. Three adjustable alarm levels are provided per channel with alarm relays for HORN, HIGH, WARN & FAULT.

.3 Panel shall be IP66 and NEMA 4X, Explosion-Proof, surface mount, and rack mount packaging. A steady green backlight to indicate normal operation, flashing yellow to indicate fault and flashing red to indicate an alarm.

.4 Sensors shall be catalytic or infrared, toxic and oxygen versions electrochemical sensors Poison immune infrared sensors Poison resistant catalytic bead sensors Long life sensors.


.1 Honeywell Analytics HA-71 or equal and approved.

2.12 GAS DETECTION SENSORS

.1 Provide Gas detection sensors as indicated on the drawings and in accordance with the location hazard classification. The scale, range, relay operation, alarm set point and electronic tag number of the detector shall be adjustable using the transmitter's LCD and non-intrusive magnetic switches. Provide remote sensor mounting kit and duct mounting kit.

.2 Sensors shall be long-life type, catalytic or infrared, flammable gas and oxygen versions with, as appropriate, electrochemical sensors, poison immune infrared sensors and catalytic bead sensors.


.1 Honeywell Analytics – The Sensepoint XCD range (for Acetylene Plantroom) .2 Honeywell Optima Plus or equal for flammable gas sensors.

2.13 GAS CYLINDERS

.1 Provide fully-filled Gas Cylinders, for each gas, in the size and capacities indicated to allow complete testing and commissioning of the installations and for client



training procedures. At the works handover stage arrange with the client’s specified cylinder rental company to provide and install all gas cylinders as shown on the drawings and as specified and scheduled, fully-filled. Include all costs associated with this provision of gas cylinders.

.2 Praxair is the current gas cylinder supplier to the Whitby Campus.

2.14 CYLINDER SUPPORT AND BASE

.1 Supply and install chain and hook arrangement for each cylinder to be tied safely to the wall during storage/spare, empty and in use condition. Chain and hook shall be galvanized steel suited for cylinder weight, height and circumference.

.2 Supply 18” wide and length to suit cylinder bank/manifold length bolted to the floor to install cylinders in place. Same arrangement shall be provided for spares and empty cylinders for safe keeping and handling.

2.15 IDENTIFICATION

.1 Provide gas pipe ID tags/name tapes at every 5 meter distance on either side of wall and ceiling penetration and at point of use pipes.

.2 Tags/tapes shall be clearly visible from floor level.

.3 ID piping and valves in gas cylinder room to indicate shop 1/2 and shop 3 gas manifold header and mains and shutoff valves.

2.16 SEALING AND FIRE PROOFING

.1 Seal all wall opening for a water tight installation on exterior walls of gas cylinder room and weld shop areas at all pipe penetrations.

.2 Fire proof openings between adjoining rated spaces.

2.17 GENERAL WORK

.1 Remove all gas piping and accessories (Acetylene, Oxygen, Argon, Mixed Gas) from the outside gas cylinder chain link enclosure serving the Shop 1 and Shop 2 immediate to the west of the headers from cylinders to the outlets. Existing Shop 3 piping, valves and accessories to just inside the wall to remain. Remove cylinders and handover to the College.

.2 Upon completion of the outside closed gas cylinder room, install all piping, headers, manifolds and connect one group of AC, Ox, Ar and mixed gases piping to existing Shop 3 piping headers at the valves just inside the shop area from piping run over the pipe bridge to inside. Second group of headers shall be installed from cylinders to shop 1 & 2 over the pipe bridge with isolation valves inside the shop area and all new piping installed to all existing welding booths and cutting stations as per plans and details shown on the drawings.



.3 Install isolation valves, headers, manifolds, spark arresters, relief valves at the manifolds/cylinders and at high level main piping to Shop 1 & Shop 2 and pipe to outside to match existing vent piping from mains for Shop 3.

.4 Test all piping for leaks, commission from cylinders to the outlets on each bench.

END OF SECTION

SHARMA & PARTNERS INC. I 85 Curlew Drive, Unit 108 Toronto, ON M3A 2P8 | t: 416-291-8822

SHARMA & PARTNERS INC. Mechanical Addendum

Client Durham College, 1930 Simcoe road N, Oshawa Project: Welding Shop Piping, Whitby.

Mechanical Addendum Issue Date: Project Number:

MA-1 October 29, 2018 2018-1044

The following items are changes to the tender contract documents for this project. Contractor shall include the cost of these addendum items in the tender quotation. All material and workmanship are to be described in the contract documents unless otherwise stated. Contractor shall identify addendum numbers included in the tender quotation when submitting tender / bid form.

1.0 DRAWINGS & SPECIFICATIONS( Spec Section 20 07 00 Piping system reissued):

1.1 Section 20 07 00 Welding shop Piping system issued with the tender package contains information

requested during the site visit. This section includes types of piping, valves, fittings, joints, cylinders, manifolds, flash arresters, regulators, check valves, detection systems, accessories etc. to be used in the project. All products used shall be code compliant as noted and TSSA approved prior to installation.

2.0 STAGING OF SCOPE OF WORK:

2.1 Durham College has decided to complete ONLY THE OUTSIDE SCOPE OF WORK including the

Gas Cylinders, headers, distribution and new piping connections to existing pipe penetrations serving the existing Phase 2 weld Shop areas.

2.2 Existing Piping through the wall and all interior piping distribution installation shall be in Stage 2 scope

and NOT INCLUDED IN THIS TENDER PACKAGE. Interior shut off valves and gas detection sensors at the wall entry shall remain and shall be tested and certified by outside new system installation.

2.3 Contractors shall submit tender quotation for the outside work only.

End of Addendum



1. GENERAL

1.1 STANDARDS

.1 Provide welding gas installations compliant with CAN/CSA-W117.2-12 – “Safety in welding, cutting, and allied processes” and generally as described in NFPA 51 Standard for the Design and Installation of Oxygen–Fuel Gas Systems for Welding, Cutting, and Allied Processes.

1.2 SUBMITTALS

.1 Shop Drawings: Submit shop drawings for all products specified in Part 2 of this Section except for the pipe and fittings.

.2 Test Data: Submit piping system leakage test sheets as specified.

2. PRODUCTS AND EXECUTION

2.1 PIPE, FITTINGS AND JOINTS

.1 Piping and fittings shall comply with ASME B31.3, Process Piping shall be at least Schedule 40,and fittings shall be at least standard weight in sizes up to and including 6 in. nominal, except as otherwise described hereunder. Materials for fabrication, installation, cleaning, and testing of piping systems shall be selected in accordance with sound engineering practice. Piping shall be steel or seamless copper, brass, or stainless steel tubing, except as provided hereunder.

.1 For Oxygen, Argon and Mixed Gases Piping Systems, use Schedule 40 pipe

for pressures not exceeding 1034Kpaand Schedule 80 for higher pressures. .2 For Acetylene Piping Systems, piping shall be steel. Unalloyed copper shall

not be used except in listed equipment. Except in cylinder manifolds, acetylene shall not be piped or utilized at a pressure in excess of 103 kPa (15 psi) gauge or 206 kPa (30 psi) absolute. This provision is not intended to apply to the storage of acetylene in cylinders manufactured to DOT specifications.

.3 For Oxygen, argon and Mixed Gas Piping Systems, hose connections and

hose complying with NFPA 51 shall be permitted to be used to connect the outlet of a manifold pressure regulator to piping, providing the working gauge pressure of the piping is 1.722 MPa (250 psi) or less and the length of the hose does not exceed 1.5 m (5 ft). Hose shall have a minimum bursting gauge pressure of 6.9 MPa (1000psi)

.2 Piping Joints shall be as follows:

.1 Joints in steel piping shall be welded, threaded, or flanged. Fittings, such as ells, tees, couplings, and unions, shall be permitted to be rolled, forged, or cast steel, malleable iron, or nodular iron. Gray or white cast iron fittings shall be prohibited.



.2 Joints in brass or copper pipe shall be welded, brazed, threaded, or flanged. If of the socket type, they shall be brazed with silver brazing alloy or similar high melting point filler metal.

.3 Joints in seamless copper, brass, or stainless steel tubing shall be listed or

approved gas tubing fittings, or the joints shall be brazed. If of the socket type, they shall be brazed with silverbrazing alloy or similar high melting point filler metal.

.4 Tapered threaded connections in oxygen pipe shall be tinned or made up with

‘Teflon’ (polytetrafluoroethylene) tape or other thread sealants suitable for oxygen service. Sealants shall be applied to the externally threaded portion only.

.3 Piping shall be run as directly as practical and protected against corrosion and physical damage, and allowance shall be made for expansion, contraction, jarring, and vibration.

.4 Piping under buildings or foundations shall be prohibited or provided with a vented casing or located in a well ventilated tunnel. Oxygen piping shall be permitted to be placed in the same tunnel, trench, or duct with fuel gas pipelines, provided there is good natural or mechanical ventilation and there is no contact with oil.

.5 Low points in piping and equipment where moisture can collect, shall be drained into drip post constructed so as to permit pumping or draining out the condensate at necessary intervals. Drain valves having outlets normally closed with screw caps or plugs shall be installed for this purpose. Open end valves or petcocks shall not be used, except that in drips located outdoors and underground and not readily accessible, valves shall be permitted to be used at outlets if they are equipped with means to secure them in the closed position. Pipes leading to the surface of the ground shall be cased or jacketed where necessary to prevent loosening or breaking.

.6 Readily accessible gas valves shall be provided to shut off the gas supply to buildings in cases of emergency. A shutoff valve shall be installed in the discharge from the gas holder, manifold, or other source of supply.

.7 Cleaning:

.1 Fittings and lengths of pipe shall be examined internally before assembly and, if necessary, freed of scale or dirt. Oxygen piping and fittings shall be washed out with a solution that will remove grease and dirt but that will not react with oxygen.

.2 Piping shall be thoroughly blown out after assembly to remove foreign

materials. For oxygen piping, oil free air or oil free nitrogen shall be used. For other piping, air or inert gas shall be permitted to be used.

.8 Protective Equipment, Hose, and Regulators shall be installed only for the service for which it is intended and as recommended by the manufacturer.



.9 Pressure Relief for Piping Systems shall be of Listed or approved type and shall be installed in fuel gas, oxygen and mixed gas piping if the maximum design pressure of the piping or the system components can be exceeded. These devices shall be set to discharge at not more than the maximum design pressure of the piping or system components and to a safe location. Pressure relief devices in pressure regulators in the system shall not be used to fulfill this provision.

.10 Listed or approved protective equipment shall be installed in the fuel gas piping. be located in the main supply line, or at the head of each branch line, or at each location where fuel gas is withdrawn. In all cases, fuel gas serving an oxygen–fuel gas device shall flow through a protective device. Backflow protection of the fuel gas supply also shall be provided at the station outlet by a listed or approved device that will prevent oxygen from flowing into the fuel gas system.

.11 The pressure relief device shall be located on the downstream side of the backflow and flashback protection devices. The vent from the pressure relief device shall be at least as large as the relief device outlet and shall be installed without low points that can collect moisture. I flow points are unavoidable, drip pots with drains closed with screw plugs or caps shall be installed at the low points. The vent terminus shall not endanger personnel or property through gas discharge, shall be located away from ignition sources, shall terminate in a hood or bend, and shall discharge outdoors at a safe location. Vent pipes shall be galvanized steel.

.12 Supply and install relief valves on each AC, O, AR, MIG, main piping at high level and pipe to outside through wall to release pressure outdoor. (Match existing relief location).

.13 If pipeline protective equipment incorporates a liquid, the liquid level shall be maintained, and an antifreeze shall be permitted to be used to prevent freezing. Fuel gas for use with equipment not requiring oxygen shall be withdrawn upstream of the piping protective devices.

.14 Testing:

.1 Piping systems shall be tested and proved gastight and leak free in accordance with ASMEB31.3, Process Piping at minimum 100psi or 150% of the operating pressure whichever is greater.

.2 Where combustible gas lines or other parts of equipment are being purged of

air or gas, sources of ignition shall not be permitted near uncapped openings.

.15 Painting, Signs and Labels:

.1 Underground pipe and tubing and outdoor ferrous pipe and tubing shall be covered or painted with a material for protection against corrosion.

.2 Station outlets shall be marked to indicate the name of the gas in the

connected pipe. .3 Signs clearly establishing the location and identity of section shutoff valves

shall be provided.



.4 Labels assist in identifying materials conveyed in gas piping systems shall comply with ANSI Bulletin A13.1 and local codes.

.5 Paint all exposed piping to outdoor with water proof external application paint.

2.2 WELDING GAS HIGH PRESSURE CYLINDER MANUAL MANIFOLD SYSTEM

.1 Provide a shutoff valve on either side of the cylinder banks to switch over cylinder banks manually.

.2 The following Safety Standards and Codes shall be applicable:

.1 Compressed Gas Association (Pamphlets V-1, E-1, G-1) .2 American National Standards Institute (Pamphlets B-57-1) .3 National Fire Protection Association (Pamphlets NFPA-51) .4 UL listed component regulators and valves

.3 The Unit shall be frame mounted with removable cover for easy access to internal components and include all line, supply, reserve and intermediate pressure gauges, changeover valves and solenoid valves compatible with the gas service. Powder coated steel mounting frame and with durable ABS plastic cover. Cover draw latch shall be lockable for security. Wall or stand mount as required by site conditions.

.4 ½” NPT (F) outlet connection. Inlet size: 1-11½” NPS (M)

.5 Adjustable delivery pressure –– 0-200 PSIG for Oxygen, Inert, CO2. Maximum Inlet – 3000 PSIG Maximum Temperature - 140°F Minimum Temperature - 0°F High flow capacity –– 3500 SCFH air @ 70°F, –– Flow coefficient Cv = 0.238.

.6 The manifold shall have a two-year warranty, while the switchover mechanism shall have a five year warranty.

.7 Gas Pipeline heaters. Provide 1000W heaters unless otherwise specified, suitable for the gas service.


.1 The Victor VM2000 Series .2 Rexarc Electronic Series

2.3 HYDRALIC FLASH ARRESTORS

.1 Provide on manifolds with two or more Acetylene Gas Cylinders and where indicated, hydraulic Flash back arrestors. These systems are designed to provide protection via the use of ethylene-glycol in the unit. Each unit shall have a pressure relief valve which provides additional protection to the system in the event of over-pressurization. Hydraulic Arrestors shall be FM approved.




.1 Victor or equal approved. Maximum flow is 1000 SCFH for the FB-2A and 300 SCFH for theFB-1A

2.4 PIPELINE – STATION OUTLET AND REGULATOR SET

.1 For each weld station and as indicated, provide station regulators fitted with the appropriate station style CGA connections for use with oxygen, inert or fuel gases.

.2 Station Outlet Protective Equipment: A listed or approved shutoff valve shall be installed at each outlet and located on the upstream side of other station outlet equipment. A listed or approved backflow check valve shall be installed at each station outlet. When a P F device is located at the station outlet, an additional check valve is not required in the fuel gas line. If the station outlet is equipped with a detachable regulator, the outlet shall terminate in a union connection that complies with CGA E3.

.3 If the station outlet is connected directly to a hose, the outlet shall terminate in a union connection complying with CGA E1, Standard Connections for Regulator Outlets, Torches, and Fitted Hose for Welding and Cutting Equipment. Station outlets shall be permitted to terminate in pipe threads to which permanent connections are to be made, such as to a machine.

.4 Station outlets shall be equipped with a detachable outlet dust cap that shall be secured in place except when a hose, a regulator, or piping is attached.

.5 Hose and hose connections for oxygen and fuel gas service, including hose used to connect portable outlet headers to piping systems, shall comply with CGA E1.

.6 Pressure Regulators shall be used only for the gas for which they are intended. The regulator shall have 4 port forged brass body with high strength zinc-aluminum housing cap, all to meet or exceed CGA E-4 ETL and listed to UL 252. The regulator shall have color coded, impact absorbing, adjusting knob and safety knob and 2.5” gauge with relevant artwork. Provide side entry or rear entry inlet versions as required and with overall sizes to suit space limitations.

.7 Maximum inlet pressure of 200 PSIG.

.8 Acceptable Products are:

.1 Victor, EDGE EST4, or equal and approved.

2.5 PIPELINE – HIGH PRESSURE HEADER AND EXTENSIONS

.1 All Manifolds shall be expandable to meet changing application requirements.

.2 Construction shall be factory-fabricated and tested brazed brass for maximum leak protection rated for 3000 PSIG and end-capped and with right or left side expansions to accommodate future expansion needs.

.3 Manifolds shall have 1” x 11½” NPS Connections.



.4 High-pressure Pigtails shall be of high purity brass or stainless models and shall be complete with Check valves and as follows:

.1 24 inch flexible

.2 Acetylene models equipped with dry flash arrestors

.5 Provide at least two spare hose connections on each header for future capacity increase of each gas and liquid system.


.1 Victor extensions Model HER and HEL .2 Rexarc





2.8 GAS FLOWMETERS

.1 Provide Flowmeters for precision, gas-flow measuring. Instruments shall be designed for use in laboratories and specific MIG/TIG welding applications. Flowtubes and outer covers shall be of impact-resistant Lexan for maximum durability and service life.

.2 Acceptable products are: .1 Victor extensions Model HER and HEL .2 Rexarc

2.9 GAS BALL VALVES

.1 Provide CSA/TSSA approved ball type or lubricated plug type shut-off valves to isolate equipment, and wherever else shown. Provide unibody bronze ball valves, rated 300 W.O.G., plated brass ball with Teflon seats, reinforced stem packing and ball thrust washer with adjustable stem packing gland.

.2 Ensure that valves are located for easy accessibility and maintenance.



2.10 GAS CHECK VALVES

.1 Gas check valves shall have armored and rounded inner valve which is cleanable and easily replaceable and suitable for the particular gas service.

2.11 GAS DETECTION CONTROLLER

.1 Provide comprehensive monitoring of flammable, toxic and oxygen gas hazards in potentially explosive atmospheres with adjustable detector operation LCD and magnet switches and non-intrusive operation. System shall be compliant with UL, INMETRO, ATEX, IECEx, CSA, KTL, PA,GB and CCCF standards.

.2 Controller to accept up to 16 inputs from numerous sensor types; Inputs may be analog or Modbus allowing data retrieval via RS-485 with 8 channel display mode and option boards. A graphic LCD displays monitored data as trends, bar graphs and engineering units. Three adjustable alarm levels are provided per channel with alarm relays for HORN, HIGH, WARN & FAULT.

.3 Panel shall be IP66 and NEMA 4X, Explosion-Proof, surface mount, and rack mount packaging. A steady green backlight to indicate normal operation, flashing yellow to indicate fault and flashing red to indicate an alarm.

.4 Sensors shall be catalytic or infrared, toxic and oxygen versions electrochemical sensors Poison immune infrared sensors Poison resistant catalytic bead sensors Long life sensors.


.1 Honeywell Analytics HA-71 or equal and approved.

2.12 GAS DETECTION SENSORS

.1 Provide Gas detection sensors as indicated on the drawings and in accordance with the location hazard classification. The scale, range, relay operation, alarm set point and electronic tag number of the detector shall be adjustable using the transmitter's LCD and non-intrusive magnetic switches. Provide remote sensor mounting kit and duct mounting kit.

.2 Sensors shall be long-life type, catalytic or infrared, flammable gas and oxygen versions with, as appropriate, electrochemical sensors, poison immune infrared sensors and catalytic bead sensors.


.1 Honeywell Analytics – The Sensepoint XCD range (for Acetylene Plantroom) .2 Honeywell Optima Plus or equal for flammable gas sensors.

2.13 GAS CYLINDERS

.1 Provide fully-filled Gas Cylinders, for each gas, in the size and capacities indicated to allow complete testing and commissioning of the installations and for client



training procedures. At the works handover stage arrange with the client’s specified cylinder rental company to provide and install all gas cylinders as shown on the drawings and as specified and scheduled, fully-filled. Include all costs associated with this provision of gas cylinders.

.2 Praxair is the current gas cylinder supplier to the Whitby Campus.

2.14 CYLINDER SUPPORT AND BASE

.1 Supply and install chain and hook arrangement for each cylinder to be tied safely to the wall during storage/spare, empty and in use condition. Chain and hook shall be galvanized steel suited for cylinder weight, height and circumference.

.2 Supply 18” wide and length to suit cylinder bank/manifold length bolted to the floor to install cylinders in place. Same arrangement shall be provided for spares and empty cylinders for safe keeping and handling.

2.15 IDENTIFICATION

.1 Provide gas pipe ID tags/name tapes at every 5 meter distance on either side of wall and ceiling penetration and at point of use pipes.

.2 Tags/tapes shall be clearly visible from floor level.

.3 ID piping and valves in gas cylinder room to indicate shop 1/2 and shop 3 gas manifold header and mains and shutoff valves.

2.16 SEALING AND FIRE PROOFING

.1 Seal all wall opening for a water tight installation on exterior walls of gas cylinder room and weld shop areas at all pipe penetrations.

.2 Fire proof openings between adjoining rated spaces.

2.17 GENERAL WORK

.1 Remove all gas piping and accessories (Acetylene, Oxygen, Argon, Mixed Gas) from the outside gas cylinder chain link enclosure serving the Shop 1 and Shop 2 immediate to the west of the headers from cylinders to the outlets. Existing Shop 3 piping, valves and accessories to just inside the wall to remain. Remove cylinders and handover to the College.

.2 Upon completion of the outside closed gas cylinder room, install all piping, headers, manifolds and connect one group of AC, Ox, Ar and mixed gases piping to existing Shop 3 piping headers at the valves just inside the shop area from piping run over the pipe bridge to inside. Second group of headers shall be installed from cylinders to shop 1 & 2 over the pipe bridge with isolation valves inside the shop area and all new piping installed to all existing welding booths and cutting stations as per plans and details shown on the drawings.



.3 Install isolation valves, headers, manifolds, spark arresters, relief valves at the manifolds/cylinders and at high level main piping to Shop 1 & Shop 2 and pipe to outside to match existing vent piping from mains for Shop 3.

.4 Test all piping for leaks, commission from cylinders to the outlets on each bench.

END OF SECTION

Date post:	01-Oct-2021
Category:	Documents
Upload:	others
View:	4 times
Download:	0 times

Transmittal - Snyder Construction

Documents