Lou Pagano, Director Purchasing and Materials Management Division City Hall, 18th Floor, West Tower

100 Queen Street West

Victor Tryl, Manager Professional Services

 January 24, 2012 via email –26 pages

ADDENDUM NO. 3 REQUEST FOR TENDER 267-2011 CONTRACT MCP11-11WP

NORTH WORKSHOP NEW CONSTRUCTION AND REHABILITATION AT THC REVISED CLOSING: 12:00 NOON (LOCAL TIME), FEBRUARY 1, 2012

Please refer to the above Request for Tender (RFT) document in your possession and be advised of the following: I. EXTENDED CLOSING DEADLINE

The Closing Deadline has been extended from January 26, 2012 to February 1, 2012.

II. CHANGES TO SPECIFICATIONS 1) Refer to Mechanical Addendum 02 attached dated January 23, 2012. 2) Section 08 71 10 Door Hardware General: 2.2.12 D11: Door Height to be “2030mm” in lieu of “230mm.” 3) Section 1028 00 Washroom Accessories, 2.1.6.7: Toilet roll dispenser and paper towel dispenser to be recess mounted. All finishes to be stainless steel. 4) Section 32 93 20

1) Include 2.3.1.2: Amount of seed to be 1 gallon per 1sq.m. 2) Include 2.4.8: Caliper of trees to be minimum 60mm 3) Section 1.7 Guarantee – two years in lieu of one 5) Refer to DSS report with reference to the old North workshop.

II. CHANGES TO DRAWINGS

1) Refer to Mechanical Addendum 02 attached dated January 23, 2012.

2) Include or Revise Architectural drawings as per below:

1)2/A102 – Height of block wall to be 2100AFF in lieu of 3000AFF

1) A103 – Revised drawing including sprinklers.

2) A515 – Revised drawing indicates revised relationship of door to columns.

3) 4/A516 ‘TWP – HEAD AND SILL’

1) To be drawing number ‘5’ in lieu of ‘4’.

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2) Use Manufacturer’s proprietary thermally broken sill that extends to interior face of Translucent Wall Panel frame in lieu of ‘24ga. Sloped alum. sill’ and ‘metal cleat.’ Blocking to be sized and coordinated to suit sill.

4) A518 – New drawings indicate cladding details around through wall penetrations.

5) A701 – Door Schedule: refer to Specifications for door dimensions.

5) EO2 – Luminaire Schedule S1 to be suspended fixture in lieu of stud mount.

III. ALTERNATES

1) Polar spray foam is not an alternate due to compressive strength of requested alternate.

2) Bradley is an acceptable alternate manufacturer to Section 10 28 00 Washroom Accessories.

IV. QUESTIONS AND ANSWERS

Q1) Drawing A012, in the material legend there is reference to a Landscape Drawing. Will a separate landscape drawing be issued?

A1) No. Drawing A011 and A012 are the Landscape Drawings. A Landscape Architect will be retained for contract administration.

Q2) Drawing A101 Section 2@ 4 indicate a layer of granular below the tunnel floor slab with weeping tiles around the perimeter. Section 8 on S3-01 does not indicate the granular or weeping tile but a 75mm skim slab. Which is correct?

A2) Construction as follows: granular fill, skim slab, tunnel slab. Weeping tiles as per drawings.

Q3) What depth of topsoil is required below sod? A3) Min. 150mm (6inches).

Q4) The soils report indicates an existing layer of topsoil between 150mm and 250mm thick (based on BH 7 and 8). Can this material be stockpiled and reused under the sod?

A4) Yes under the condition that soil is found not to be contaminated. Any stockpiling MUST occur within hoarding boundaries.

Q5) Please clarify what, if any taxes are to be included or excluded. Please clarify if the cash allowances are to include or exclude the Contractor’s overhead and profit.

A5) Refer to the pricing form. Cash Allowances – include Contractor’s overhead and profit.

Q6) Are we to assume that this project is supposed to be priced for the all the work to be taken place during regular business hours except the shutdowns for any services?

A6) Read Section 01 04 00 Use of Owner’s Site During Construction. Q7) Is there any specific time that this project is supposed to start and end? A7) Read Section 01 32 18 Construction Progress Schedules Q8) I have noticed that during the walk through a lot of excavated material was being dumped

in the site area by another project crew beside the site. Is this material being removed by the same crew or do we have to allow something in our bid?

A8) Excavated material will be removed.

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Q8) Addendum #2, page 4, part IV-Q3. Section 072113 noted in your answer is for roof

insulation not the insulation under slab. Do you require regular 50mm Styrofoam insulation under slabs or you want HI-40 or HI-60 insulation for under slabs? Is there any insulation required on top of tunnel suspended slab? Any Waterproofing?

A9) Slab insulation to be Dow HI-60 or similar. No insulation on top of tunnel. Waterproofing Type ‘2’ as per Specification 07 14 16 issued with Addendum 01.

Q10) Please advise where detail 5/S3-01 applies to? On S1-01 Foundation plan this cross

section is shown around Line C-8, Tunnel Foundation plan in the same drawing shows cross section 8/S3-01through same area and 8/S3-01 does not show any walls above tunnel, 5/S3-01 shows walls above tunnel. Please clarify. How many feet of this wall is there?

A10) Delete Section 5/S3-01. Q11) Detail - 2 / A601 - Lam1 and Lam2 , Section 06 47 00 Page 2 of 3 - Calls for one color - Is

this Lam1 or Lam 2, Also confirm the Second Laminate Colour? A11) Refer to Addendum 01, II.4 Q12) On A011 there is a note on the curb which reads, "Existing Curb to be Replaced –

Replacement to Match Existing. What is the extend of this work? A12) The current curb is damaged and needs to be repaired to approved City of Toronto standards as

noted in specifications. The extent of this work is within the hoarding boundaries as indicated.

Should you have any questions regarding this addendum contact Allison Phillips at 416-397-4825 or by email at: aphilli2@toronto.ca.

Please attach this addendum to your RFT document and be governed accordingly. Bidders are to acknowledge receipt of all addenda in their Tender in the space provided on the Tender Call Cover Page of the RFT document. All other aspects of the RFT remain the same.

Victor Tryl, P. Eng. Manager Professional Services

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Division of SNC-LAVALIN INC. 235 Lesmill Road Toronto, Ontario Canada M3B 2V1 Telephone: 416-445-8255 Facsimile: 416-445-7885

Member of the SNC LAVALIN Group

MECHANICAL ADDENDUM ADD M-02

1. MECHANICAL SPECIFICATIONS:

1.1. Add Specifications Section 21 13 13 (WET PIPE SPRINKLER SYSTEM). New Sprinkler System to be designed, built and conformed to the current Factory Mutual Engineering Division (FM) requirements.

1.2. Add Specifications Section 23 01 01 (SITE UTILLITIES).

2. MECHANICAL DRAWINGS: 2.1. DRAWING M04 (NOT RE-ISSUED):

2.1.1. Revise Small-Item Storage #105 ductwork to avoid interference with roof ladder, as shown on the sketch ADD-M02-01, attached herewith.

2.2. DRAWING M05 (NOT RE-ISSUED): 2.2.1. Revise exhaust fan EF-4 location to match drawing M04, as shown on the sketch ADD-

M02-02, attached herewith. 2.3. NEW DRAWING M12 (SITE PLAN) (ISSUED HEREWITH):

2.3.1. Re-route and extend existing water main to by-pass and provide Fire Protection water system to the new North Workshop facility, as shown on the drawing.

2.4. NEW DRAWING M13 (FIRE PROTECTION) (ISSUED HEREWITH): 2.4.1. Provide Fire Protection System for the New Workshop, as shown on the drawing. New

Sprinkler System to be designed, built and conformed to the current Factory Mutual Engineering Division (FM) requirements.

2.5. NEW DRAWING M14 (FIRE PROTECTION SCHEMATICS AND DETAILS) (ISSUED HEREWITH).

LKM Division of SNC-LAVALIN INC. per: Vladislav Bronin, M. Sc., P. Eng., LEED AP BD+C P:\2010\2010-504089\Docs\Const\Mech\North Workshop\ADD\2010-504089 ADD M02.DOC

Unit A Architecture Inc. 2012 January 23 Attention: Eric Cheung Email: eric@unita.ca Re: Highland Creek Treatment Plant – North Workshop Contract No. MCP11-11WP 51 Beechgrove Drive LKM No. 2010-504089 Toronto, Ontario Pages: 1 + 2 Sections +

2 sketches + 3 drawingscc: Jason Hong Stewart Adams Edwin Ayson Co Tran

Unit A Architecture Inc. Unit A Architecture Inc. City of Toronto - Toronto Water LKM (Toronto Office)

416-516-6690 416-516-6690 416-397-9760 416-445-7885

THIS ADDENDUM SHALL FORM PART OF THE CONTRACT DOCUMENTS, AND ALL CHANGES AND COST SHALL BE INCLUDED IN THE BID AMOUNT.

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City of Toronto Section 21 13 13 New Construction and Rehabilitation of the North Workshops WET PIPE SPRINKLER SYSTEM Contract No: MCP11-11WP Page 1 of 7 1. GENERAL 1.1 Read Mechanical General Requirements, Section 23 00 10 as part of this Section. 1.2 This Section may not be assigned to the General Contractor unless permission has been obtained from

the Owner. This Section is under Divisions 21, 22, 23. 1.3 Automatic sprinkler systems to be provided by:

• qualified and recognized automatic sprinkler installation firm with an established reputation, regularly engaged in this field, and who is a member of Canadian Automatic Sprinkler Association (CASA).

• all personnel employed on site for automatic sprinkler system installation, to be in possession of valid Canadian Automatic Sprinkler Association Certificate of Qualification and "Registered Sprinkler and Fire Protection Installer" identification card.

1.4 Applicable standards (conform to current requirements of):

• Ontario Building Code • Ontario Fire Code • Insurers' Advisory Organization of Canada (IAO) • National Fire Protection Association (NFPA) 13 • Factory Mutual Engineering Division (FM) Data Sheets.

1.5 Shop drawings and product data.

.1 Prepare shop drawings with hydraulic calculations, and forward three copies to: • Factory Mutual Engineering Division for review and acceptance.

.2 Prepare revised shop drawings with hydraulic calculations based on the above review, and forward three copies to Reviewing Authority - City of Toronto.

.3 Submit shop drawings stamped by the reviewing Authority to Consultant for approval.

.4 Submit CASA Certificate of Qualification and Sprinkler Fitter Identification Card for each sprinkler installer to be employed on project site, as par of shop drawing submittal.

1.6 Samples

.1 Submit samples of following: • Each type of sprinkler. • Signs.

1.7 Engineering design criteria:

.1 System to be designed to FM requirements. • Use Hydraulic Design.

• Ordinary hazard Group 2 in all areas. .2 Hydraulic calculations to be based on water supply test[s] down-rated in accordance with requirements of

Authorities having jurisdiction. 1.8 Maintenance materials

.1 Provide cabinet, containing special sprinkler wrench, and spare stock of sprinklers. Include at least one head of each type and temperature rating installed in system.

2. PRODUCTS 2.1 Pipe for incoming service, sprinkler header, siamese incoming service, sprinkler fire pump piping, and sprinkler

riser from base to top of vertical: up to 1200 kPa (175 psi). To be galvanized. .1 Pipe

• All: Schedule 40 seamless or ERW steel to ASTM A53, A135, or A795, Grade B. • All ASTM A795 pipe to be hydrostatically tested.

.2 Joints 5 of 26

City of Toronto Section 21 13 13 New Construction and Rehabilitation of the North Workshops WET PIPE SPRINKLER SYSTEM Contract No: MCP11-11WP Page 2 of 7

• Flanged, welded, or grooved coupling. .3 Fittings

• Forged steel, butt welding Schedule 40 for NPS 2 1/2 and over. .4 Flanges

• 1035 kPa (150 lb) forged steel, slip-on, raised face style. • 1035 kPa (150 lb) forged steel, weld neck, raised face style.

.5 Flange gaskets • Buna-N, Neoprene, or EPDM sheet, 1.6 mm (1/16 in) thick.

.6 For grooved couplings, see 2.5 using Schedule 40 seamless or ERW steel pipe to ASTM A53, A135, or A795, Grade B, and Victaulic Zero-Flex couplings. All ASTM A795 pipe to be hydrostatically tested.

.7 Pipe hangers • ULC listed for fire protection as specified in Section 15061 - Pipe Hangers and Supports.

2.2 Pipe and fittings: threaded; up to 1200 kPa (175 psi). To be galvanized.

.1 Pipe • Up to NPS 2: Schedule 40 seamless or ERW steel to ASTM A53, A135, or A795, Grade B. • All ASTM A795 pipe to be hydrostatically tested.

.2 Joints • Threaded up to NPS 2.

.3 Fittings • 1035 kPa (150 lb) black malleable iron threaded up to NPS 2.

.4 Unions • 1035 kPa (150 lb) black malleable iron, bronze face ground joint up to NPS 2.

.5 Pipe hangers • ULC listed for fire protection as specified in Section 15061 - Pipe Hangers and Supports.

2.3 Pipe and fittings: flanged or welded; up to 1200 kPa (175 psi). To be galvanized.

.1 Pipe • Up to NPS 2: Schedule 40 seamless or ERW steel to ASTM A53, A135, or A795, Grade B. • NPS 2 1/2 and over: Schedule 40 seamless or ERW steel to ASTM A53, A135, or A795, Grade B. • All ASTM A795 pipe to be hydrostatically tested.

.2 Joints • Welded or flanged, for NPS 2 1/2 and over.

.3 Fittings • Forged steel butt weld, Schedule 40 for NPS 2 1/2 and over.

.4 Flanges • 1035 kPa (150 lb) forged steel, slip-on, raised face style. • 1035 kPa (150 lb) forged steel, weld neck, raised face style.

.5 Flange gaskets • Buna-N, neoprene, or EPDM, sheet 1.6 mm (1/16 in) thick.

.6 Pipe hangers • ULC listed for fire protection as specified in Section 23 05 29 - Pipe Hangers and Supports.

2.4 Pipe and fittings to 1200 kPa (175 psi) - grooved coupling method. To be galvanized.

.1 Pipe • Up to NPS 2: Schedule 10 or Schedule 40 seamless or ERW steel to ASTM A53, A135, or A795,

Grade B, with rolled grooves. • NPS 2 1/2 to NPS 12: Schedule 40 seamless or ERW steel to ASTM A53, A135, or A795, Grade

B, with rolled grooves. • All ASTM A795 pipe to be hydrostatically tested.

.2 Couplings, fittings and flanges • Couplings

• Malleable or ductile iron NPS 2 1/2 and over. • Fittings

• Malleable iron or ductile iron to NPS 2 1/2 to NPS 12. • Fabricated steel NPS 14 and over.

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City of Toronto Section 21 13 13 New Construction and Rehabilitation of the North Workshops WET PIPE SPRINKLER SYSTEM Contract No: MCP11-11WP Page 3 of 7

• Flanges • Cast iron, raised face flange with coupling groove NPS 2 1/2 and over.

• Gaskets • EPDM Grade "E" for grooved couplings.

Standard of Acceptance: • Victaulic • Gruvlock

.3 Pipe hangers

• ULC listed for fire protection as specified in Section 23 05 29 - Pipe Hangers and Supports. 2.5 Valves

• ULC and FM listed for fire protection service. .1 Gate valves up to NPS 2 threaded:

• 1200 kPa (175 lb) CWP, bronze, solid wedge, OS & Y rising stem, up to NPS 2. Standard of Acceptance: • Crane 459 • Jenkins 820J • Nibco T-104-0

.2 Gate valves NPS 2 1/2 and over, flanged:

• 1200 kPa (175 lb) CWP, IBBM flanged, OS & Y rising stem, solid wedge. Standard of Acceptance: • Crane 467 • Jenkins 825CJ • Nibco F-607-OTS or RW

.3 Butterfly valves NPS 2.

• 1200 kPa (175 lb) CWP, threaded or grooved coupling ends, aluminum bronze or nickel plated ductile iron disc, EPDM seat, "OPEN/SHUT" indicator, externally mounted monitor switch.

Standard of Acceptance: • Milwaukee "Butterball" Series BB-SCS • Victaulic Series 727 Fireball

.4 Butterfly valves NPS 2 1/2 and over.

• 1200 kPa (175 lb) CWP, tapped lug style cast iron body, aluminum bronze or nickel plated ductile iron disc, EPDM seat, "OPEN/SHUT" indicator, externally mounted monitor switch.

Standard of Acceptance: • Grinnell Series 8000FP • Demco NE-H

.5 Butterfly valves NPS 2 1/2 and over for grooved coupling.

• 1200 kPa (175 lb) CWP, "OPEN/SHUT" indicator, externally mounted monitor switch. Standard of Acceptance: • Victaulic Series 708-W or 727 FireBall • GSP Series BV-G

.6 Non-return valves, NPS 2 1/2 and over

• 1200 kPa (175 lb) CWP, IBBM flanged, swing check, replaceable bronze disc and seat ring, bolted cover, NPS 2 1/2 and over.

Standard of Acceptance: • Crane 375 • Jenkins 477 • National Fire Equipment A104G • Victaulic Series 717 Firelock

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City of Toronto Section 21 13 13 New Construction and Rehabilitation of the North Workshops WET PIPE SPRINKLER SYSTEM Contract No: MCP11-11WP Page 4 of 7

• Same as above but with rubber faced disc at Siamese connection. Standard of Acceptance: • Crane 375 • Jenkins 477J • National Fire Equipment A104G

.7 Automatic ball drip.

• 1720 kPa (250 psi) working pressure. • NPS 1/2 or 3/4. • Automatic seal under pressure.

Standard of Acceptance: • National Fire Equipment A58

2.6 Sprinklers

.1 ULC and FM listed for fire service.

.2 All sprinkler heads on project to be of same manufacture.

.3 Sprinkler to be closed by pip and Belleville washer. O-ring sprinklers are not acceptable.

.4 Recessed in all drywall or lay-in tile ceilings.

.5 Guards and cages to suit locations.

.6 Standard temperature rating 57°C to 74°C (135°F to 165°F).

.7 Intermediate and high temperature rating heads to suit local conditions.

.8 In accordance with the following: • 12 mm (1/2 in) diameter orifice or 13 mm (17/32 in) diameter orifice. • Upright, bronze body, glass bulb type. • Pendent, chrome plated body and escutcheon plate, glass bulb type. • Recessed, chrome plated body ring and cup, glass bulb type. • Concealed, flush mount with fusible white [chrome] cover plate. • Side wall, bronze body, glass bulb type. • Side wall, chrome plated body and escutcheon plate, glass bulb type.

Standard of Acceptance: • Viking • Tyco • Reliable • Victaulic

2.7 Alarm check valves

.1 ULC and FM listed for fire service.

.2 Generally of same manufacture as specified for sprinkler heads.

.3 Fitted with OS & Y gate valves or butterfly valves, flow and pressure switches, test connections and pressure gauges.

Standard of Acceptance: • Viking • Tyco • Reliable • Victaulic

2.8 Excess pressure pump

.1 Close coupled bronze pump with stainless steel shaft.

.2 0.3 l/s (5 USGPM) maximum flow rate, with 210 kPa (30 psi) pressure boost.

.3 Motor size to suit capacity.

.4 Pressure switch with pressure differential of 100 kPa (15 psi) to operate excess pressure pump.

.5 Shut-off valve and strainer on pump inlet.

.6 Relief vlave, non-return valve, shut-off valve on pump discharge.

.7 For inlet water pressure of up to 630 kPa (90 psi): Standard of Acceptance:

8 of 26

City of Toronto Section 21 13 13 New Construction and Rehabilitation of the North Workshops WET PIPE SPRINKLER SYSTEM Contract No: MCP11-11WP Page 5 of 7

• Albany Pump excess pressure gear pump 2.9 Supervisory switches

• ULC and FM listed for fire service. • Housing secured with tamperproof screws. • Mechanically secured, with two SPDT (form C) contacts and supervisory capability.

.1 For OS & Y gate valves Standard of Acceptance: • Potter Electric Signal - Model OSYS-UA2 to suit valve size. contacts). • System Sensor - Model OSY2A

.2 For post indicator and butterfly valves

Standard of Acceptance: • Potter Electric Signal - Model PIVS-UA2 • System Sensor - Model PIV2A

2.10 Pressure switches on alarm check valves.

• ULC and FM listed for fire service. • Service pressure rating of 1200 kPa (175 psi). • 1/2 in NPT male pressure connection. • Housing secured with tamperproof screws.

.1 For loss of normal water pressure on wet pipe sprinkler system. • Operation on pressure decrease of 200 kPa (30 psi). • One SPDT (Form C) contacts, 10 Amp at 125/250 VAC.

Standard of Acceptance: • Potter Electric Signal - Model PSS-120 • System Sensor - Model EPSA120-1

.2 For providing alarm condition on wet pipe sprinkler system.

• Operation on pressure change of 30-60 kPa (4-8 psi). • One or two SPDT (Form C) contacts, 10 Amp at 125/250 VAC.

Standard of Acceptance: • Potter Electric Signal - Model PS10-1 or -2 • System Sensor - Model EPSA10-1 or -2

2.11 Flow switches.

• ULC and FM listed for fire service. • For mounting in zone piping

Standard of Acceptance: • Grinnell Company of Canada - Model F-620 • Potter Electric Signal - Model VSR-D • System Sensor - Model WFD--A series

2.12 Water gong.

.1 Water operated outside alarm bell, weather protected. 2.13 Alarm test module.

.1 ULC and FM listed for fire service.

.2 Orifice to suit single sprinkler flow.

.3 Locate as per NFPA 13 requirements.

.4 Threaded connections. Standard of Acceptance: • Victaulic, Style 718 TestMaster or Style 720 TestMaster II, with threaded ends • AGF "TesTanDrain" • Grinnell model F350

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City of Toronto Section 21 13 13 New Construction and Rehabilitation of the North Workshops WET PIPE SPRINKLER SYSTEM Contract No: MCP11-11WP Page 6 of 7

• G/J "Sure-Test" 2.14 Fire department (siamese) connection.

.1 Stainless steel plated, recessed Siamese type with double clapper valve, threaded metal caps and chains.

.2 Identifying sign cast on plate with words "AUTO-SPRINKLER, FIRE DEPARTMENT CONNECTION”.

.3 Thread specifications to be compatible with local fire department.

.4 Include ULC listed check valve and NPS 3/4 automatic ball drip in line. Standard of Acceptance: • National Fire Equipment - Model 229 • WILCO IE-28

2.15 Signs

.1 Fitted on control valves, shut-off valves, drain valves and test valves.

.2 150 mm x 150 mm (6 in x 6 in) for automatic control valves and alarm valves.

.3 50 mm x 150 mm (2 in x 6 in) for other valves.

.4 Made of enamelled steel with fire department red enamel background, white lettering, inscription in accordance with FM Standards.

.5 Made of lamicoid plate, red background with white lettering, where enamelled steel is not required. 2.16 Double check valves and backflow preventers

.1 Isolate automatic sprinkler system to comply with Plumbing Code, Section 7 of OBC.

.2 ULC and FM listed for fire service.

.3 Double check valve assemblies to be in accordance with CSA Standard B64.5. Standard of Acceptance: • Watts • Conbraco • Febco • Wilkins

3. EXECUTION 3.1 Water service

.1 Commence work under this Section at blank flanges left on unmetered fire protection header. 3.2 Sprinkler installation

.1 Provide headers, alarm check valve assemblies and fire department connections as shown.

.2 Valves as shown to be fitted with supervisory switches. Wiring from supervised valves and provision of supervisory annunciator will be done under Electrical Division 26.

.3 Provide signs at each valve identifying portion of system controlled. Fasten signs to pipe in immediate vicinity of valve.

.4 Install excess pressure pump across alarm check valve(s) in accordance with manufacturer's instructions.

.5 Wiring of trouble and flow alarms from zone sprinkler control cabinets and alarm check valves will be done under Electrical Division 26.

.6 Provide drain valves at trapped low points in piping system.

.7 Use pendant sprinklers where suspended ceilings occur. Locate sprinklers in symmetrical pattern to suit reflected ceiling plans and to avoid speakers, fire alarm components, lighting fixtures, ductwork and diffusers. In general, centre heads in ceiling tiles.

.8 Provide additional sprinkler heads with associated piping for sprinkler protection under ducts, under obstructions, and in blind spaces. Include these sprinkler heads in hydraulic calculations.

.9 Anti-freeze loops are NOT permitted. Provide local dry pipe system where sprinklers are subjected to freezing temperatures; or locate wet pipe in heated area with extended dry pendant sprinkler into freezing area, e.g freezer.

.10 Combination drains or hub drains will be provided at headers under Section 22 42 01 - Plumbing Specialties and Accessories. Provide drain piping to drains.

.11 Run 2 NPS drain through wall to outside for full water flow testing in locations shown. 10 of 26

City of Toronto Section 21 13 13 New Construction and Rehabilitation of the North Workshops WET PIPE SPRINKLER SYSTEM Contract No: MCP11-11WP Page 7 of 7 3.3 Testing and approvals

.1 Test sprinkler systems in accordance with requirements of latest edition of NFPA 13 and FM Engineering Data Sheets.

.2 Schedule testing to give at least two weeks notice to following authorities • Local Fire Department. • Insurer's Representative. • Owner's Personnel. • Engineer. • Consultant. • General Contractor or Management Consultant responsible for construction of project.

.3 Prior to testing, ensure that flow switches, pressure switches, supervisory switches and other devices are in working condition and function as specified and as recommended by manufacturer.

.4 Obtain Contractor's Material and Test Certificate for underground piping.

.5 Obtain Contractor's Material and Test Certificate for above ground piping.

.6 On completion of project obtain Certificate of Approval showing that work is in accordance with rules and regulations of Factory Mutual Engineering Data Sheets.

.7 Copies of Certificates to be distributed as per shop drawing requirements.

END OF SECTION

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City of Toronto Section 23 01 01 New Construction and Rehabilitation of the North Workshops SITE UTILITIES Contract No: MCP11-11WP Page 1 of 4 1. GENERAL 1.1 Read Mechanical General Requirements, Section 23 00 10 as part of this Section. 1.2 Provide following site utilities:

.1 Fire protection water system with yard buried post indicating valves and restrainers. 1.3 Provide following site services work:

.1 Clearing of site where site service work will be carried out. Excavate to required depth and backfill for work of Division 23, outside of building.

.2 Dewatering.

.3 Disposal of excavated materials. 1.4 Site examination.

.1 Position and extent of existing underground services and other services shown have been taken from available information.

.2 Check field conditions and report any discrepancies before commencing work. 1.5 Applicable standards:

.1 ASTM D698, Standard Proctor Test

.2 ASTM D3839, Practice for Underground Installation of "Fibreglass" (Glass-Fibre Reinforced Thermosetting Resin) Pipe.

.3 Occupational Health and Safety Act and Regulations for Construction Projects with respect to trench excavation.

1.6 Protection.

.1 Provide protection and support for existing services.

.2 Assume responsibility and pay for any damage to existing services, and cost of related repairs and replacement resulting from this work.

.3 Provide adequate barricades, guards, hoarding, signage, and lanterns, to protect persons from injury and protect trees, poles, fences, and all other property.

.4 Completely fence in all open excavations to prevent unauthorized access.

.5 Provide protection against the elements, to maintain work free from damage.

.6 Protect all work liable to damage at the end of each work period.

.7 Remove all water, ice, snow, and other obstruction as required, for the proper protection of execution of work.

.8 Schedule excavations so as to cause least disruption to traffic.

.9 Ensure valve boxes, hydrants, and post indicating valves, are unobstructed and accessible at all times during construction.

1.7 Soil conditions.

.1 Soils Report available from Consultant.

.2 Owner does not guarantee accuracy of information in Soils Report as an accurate picture of undersoil conditions over whole site. Perform investigations regarding undersoil conditions as deemed necessary.

1.8 Quality assurance.

.1 Testing of materials and compaction to be carried out by testing laboratory designated by Consultant, and paid for by Owner.

.2 Proposed fill materials to be tested to confirm suitability and conformance with specifications.

.3 Density test to be conducted on compacted fill, to ASTM D698 (Standard Proctor Density).

.4 If tests indicate during construction, that fills do not meet specified requirements, remove defective fills and replace. Replacement fill to be retested at Contractor's expense.

2. PRODUCTS 2.1 Piping for buried potable water and fire protection water service.

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City of Toronto Section 23 01 01 New Construction and Rehabilitation of the North Workshops SITE UTILITIES Contract No: MCP11-11WP Page 2 of 4

.1 PVC pipe, refer to Section 15402 - Domestic (Potable) Water Piping - Buried. 2.2 Post indicating valves (PIV) and post indicators.

.1 Non-rising stem, resilient seat gate valve.

.2 1035 kPa (150 psi) CWP, 2070 kPa (300 psi) hydrostatic test pressure.

.3 ULC and FM approved.

.4 O-ring seals.

.5 50 mm (2 in) square wrench nut.

.6 Vertical indicator post: • operates non-rising stem gate valves. • visual indication of valve "OPEN" or "CLOSED". • internal telescoping system permits installation without cutting, and target to be set prior to post

extension. • wrench nut coupling to fit valve. • adjusts to grade level. • ULC and FM approved.

2.3 Backfill materials

.1 Primary backfill material: • granular `B' material compacted in 150 mm (6 in) lifts to achieve 95% modified Proctor

compaction. .2 Secondary backfill material:

• granular `A' material compacted in 150 mm (6 in) lifts to achieve 95% modified Proctor compaction.

.3 Final backfill material: • lean course granular material, free of stones larger than 25 mm (1 in) in size, organics, silt, rubble

and clay lumps. • laid down and compacted in layers of not more than 600 mm (24 in). • may include native soil, if approved.

2.4 Concrete work:

.1 As specified in Division 03, Cast-in-Place. 3. EXECUTION 3.1 Excavation

.1 Saw cut pavements, curbs and sidewalks before proceeding with excavation. Layout cuts for approval before commencing work.

.2 Prepare excavation for underground services of depth and dimensions so that no portion of any pipe bears directly against any rock or other hard surface.

.3 Cut and trim banks of excavations and shore to prevent caving in. Limit width of excavation from "crown" of pipe down to invert to twice outside diameter of pipe for pipe diameters up to 100 mm (12 in). For larger sizes limit width of excavation to outside diameter of pipe plus 100 mm (12 in).

.4 Break up and remove rocks and boulders from excavation. Use drilling and wedging to remove rock encountered in trench. Blasting will not be allowed unless approved and authorized in writing.

.5 Store materials excavated during progress of work to produce minimum of damage or disfigurement of existing ground.

.6 Keep sides and bottoms of excavations from freezing and protect work from damage due to weather conditions. Excavate in limited lengths to enable protective and heating measures to function efficiently during pipe laying, testing and backfilling.

.7 Grade around excavations to prevent surface water runoff into excavated areas.

.8 Backfill trenches or provide sheeting, sheet piling or bracing to support trench walls and fence perimeter of work area or cover trench opening with steel plates when work area is not supervised.

3.2 Dewatering

.1 All water rising from soil seepage, melting snow or ice, or rainfall to be promptly removed using approves 13 of 26

City of Toronto Section 23 01 01 New Construction and Rehabilitation of the North Workshops SITE UTILITIES Contract No: MCP11-11WP Page 3 of 4

means, when such water is on surface of subgrade soil and compacted fill. .2 Provide proper sump holes for pump out points, and well points as required. .3 Where any compacted fill or subgrade soil is disturbed and/or softened by water, due to improper

drainage or pumping; remove unsatisfactory soil and fill and bear all incidental costs associated with additional excavation, backfilling, and compaction, without extra cost to Owner.

3.3 Pipe laying and support.

.1 Plug all pipe ends during construction to prevent ingress of dirt, soil and foreign materials.

.2 Bedding class for buried piping to be as defined in Canadian Pipe Institute, Standard Specification.

.3 Grade bottom of excavations for pipes to achieve specified slope.

.4 Inside building: • Form bottom of trench in earth so that pipe is supported on solid bed of undisturbed earth free

from stones or debris exceeding 25 mm (1 in) in diameter. Shape earth to fit lower one-third segment of pipes and hubs, care being taken to ensure even bearing along barrels.

• Support piping installed in unstable or filled ground on reinforced 15 MPa (2500 lb) concrete pad or piers, as specifically described in most recent Ontario Water Resources Act. Shape concrete support to provide bearing for at least lower one-third of circumference of pipe.

.5 Outside building: • Form bottom of trench in earth so that pipe is supported on Class "B" bedding. • Support piping installed in unstable or filled ground on Class "A" 15 MPa (2500 lb) concrete

bedding. .6 Grade bottom of excavations for pipes to achieve specified slope. Place pipe and fittings in trench with

invert conforming to elevations, slopes and alignment. .7 On grades exceeding 10 percent, pipe to be laid uphill with compacted fill "collars" at each joint to prevent

line movement in trench. .8 Support piping, conduits and duct banks passing through backfill at building foundation walls and at

manholes and catch basins on 150 mm (6 in) thick reinforced concrete pads. Dowel concrete pads into side of manholes and catchbasins and extend sufficiently to obtain minimum bearing of 600 mm (24 in) on undisturbed ground.

.9 Provide minimum cover of 1.2 m (4 ft) over top of piping to and from manholes and catchbasins.

.10 Set manhole tops 40 mm (1 1/2 in) above finished grades and catchbasin tops 40 mm (1 1/2 in) below finished grades.

.11 Backfill spaces around manholes and catchbasins with sand placed in layers to achieve 95% modified Proctor compaction. Use sand up to a height of at least 600 mm (2 ft) above top of pipes. Fill remainder of space with excavated material, free from stone, and consolidate in one foot layers.

.12 Support piping passing through this backfill material on 150 mm (6 in) thick reinforced concrete pads. Dowel concrete pads into side of manholes and catchbasins and extend sufficiently to obtain minimum bearing of 600 mm (2 ft) on undisturbed ground.

.13 Where excavation has been carried to greater depth than required, replace with Primary Fill or 10 MPa (1500 lb) concrete, to give bearing value equal to that provided by adjacent undisturbed soil.

.14 Do not lay pipe in standing or running water. Prevent surface run-off from entering trench.

.15 When ground water is present in work area, dewater by bailing or pumping to maintain stability of trench and backfilled areas, and control water level below pipe bedding. Maintain control of water in trench before, during and after pipe installation, and until sufficient backfill has been placed to prevent floatation of pipe.

.16 When pipe laying is interrupted, secure piping against movement and seal open ends to prevent entrance of water, mud, debris or foreign material.

3.4 Freeze protection

.1 Freeze protection to be provided over piping when earth cover over: • water piping is less than 2.1 m (7 ft) • sewer piping is less than 1.2 m (4 ft)

.2 Provide 50 mm (2 in) of Dow Styrofoam HI-40 to form box around top and sides of piping, in accordance with DOW installation recommendations.

.3 Clearance of piping to Styrofoam to be 150 mm (6 in) minimum and 300 mm (12 in) maximum.

.4 Styrofoam boards forming box to be butted together, with horizontal board forming top of box overlapping

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City of Toronto Section 23 01 01 New Construction and Rehabilitation of the North Workshops SITE UTILITIES Contract No: MCP11-11WP Page 4 of 4

sides of box. .5 Bottom of styrofoam box to be minimum 100 mm (4 in) below bottom of pipe.

3.5 Wall Penetrations:

.1 Over excavate trench one and half pipe diameters below invert for distance of 600 mm (24 in) from face of wall.

.2 Pipe to be fitted through steel sleeve that is minimum 50 mm (2 in) larger in diameter than pipe.

.3 Fit link seal specified in Section 23 00 50, between sleeve and pipe and tighten.

.4 Backfill over excavated area up to invert of pipe with compacted pea gravel, crushed stone, or crushed gravel with grain size of less than 25 mm (1 in).

.5 Backfill remainder of trench in accordance with procedures described below. 3.6 Testing

.1 Provide all requirements necessary for testing watermains.

.2 Test all watermains, and water retaining structures for water tightness.

.3 Testing required by authority having jurisdiction to be done in presence of such authority's inspector. Obtain certification from authority having jurisdiction.

.4 Certify tests not required by authority having jurisdiction.

.5 Provide 72 hours advance notification to Consultant and authorities having jurisdiction, of test schedule.

.6 Eliminate leaks, or remove and replace defective work.

.7 Repeat testing as often as necessary to obtain certification.

.8 Pressure test watermains at 1035 kPa (150 psi) for 24 hours, without loss of pressure.

.9 Carry out additional testing required by authority having jurisdiction.

.10 Testing to closely follow construction of watermains.

.11 Submit testing certificates to Consultant before covering or burying services. 3.7 Backfilling

.1 Do not commence backfilling over services until testing is complete and approval has been obtained.

.2 Do not use frozen material for backfilling nor place any backfilling on or against frozen earth.

.3 Under building floors, roads, curbs, walks, and paved areas: • backfill trench with Primary Fill brought up to top of trench.

.4 In other locations: • backfill trench with Primary Fill brought up to level 70% of pipe diameter above invert. Then backfill

with Secondary Fill up to height of at least 600 mm (24 in) above top of pipes. Fill remainder of trench with Final Fill watered and consolidated in 300 mm (12 in) layers.

.5 Backfill excavation in close proximity to and below any footing level with 10 MPa (1500 lb) concrete to level of top of highest adjacent footing.

.6 Withdraw shoring before backfilling and fill voids left on removal of supports with Primary Fill.

.7 Minimize localized loadings and differential settlement wherever pipe crosses other utilities or subsurface structures, or wherever there are special foundations such as concrete capped piles or sheeting. Provide cushion of Primary Fill bedding between pipe and any subsurface structure.

3.8 Restoration of work area

.1 Make up settlement of backfill in roads and walks as it occurs so that regular traffic in and around work is not inconvenienced.

.2 After period adequate to reveal settlement has passed fill depressions to restore correct grade.

.3 Remove and dispose of excess excavated material, and leave site clear and unencumbered.

.4 Make good damage to: • roads, curbs, lawns, walks, and paved areas caused by excavation, backfill, settlement and

subsequent restoration. • existing underground piping, conduit or other services uncovered during excavation.

END OF SECTION

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