Halton District School Board Addendum No. 4

Alterations & Renovations at White Oaks Secondary School – South Campus Request for Tender – RFT 17-128 The following, issued by the Halton District School Board Monday, May 8, 2017, shall be incorporated in the specifications and shall form part of the proposal document for the above. QUESTION # 1 A review of the specifications for the rolling steel doors and it indicates a description for insulated rolling steel doors and insulated rolling steel fire doors. Insulated rolling steel doors are more costly than sectional doors. The existing doors are sectional doors. Please confirm what type of door is needed. RESPONSE # 1 Use sectional doors as per the attached specifications. QUESTION # 2 Please confirm whether the two tender forms issued with Addendum # 3 are to be submitted with our Tender Form (Section 301A)

Supplementary Information Form; pages 7-8 (Section 00 41 00)

Form of Tender; pages 101 - 105 (Section 00 30 00)

If the answer is yes, please consider allowing the General Contractors twenty-four (24) hours after closing to submit these forms. RESPONSE # 2 Yes, respondents must submit all forms as outlined. The Tender Form (Section 301A) is due with your original submission on May 18, 2017. The remaining forms (Section 00 41 00 and Section 00 30 00) will be due no later than 2:00 PM on Friday, May 19, 2017. QUESTION # 3 Addendum # 3 issued Specifications for Sprayed Fireproofing, Painting, Glass and Glazing and Manufactured Specialties all of which there are no drawings. Please confirm if these are relevant to the project.

RFT 17-128 Alterations & Renovations – White Oaks Secondary School Addendum # 4 Page 2

RESPONSE # 3 Delete Sprayed Fireproofing, Glass & Glazing, and Manufactured Specialties. Keep Painting QUESTION # 4 Section 08 33 23 specifies insulated overhead coiling doors, however the elevations on A203 show sectional doors. Please confirm which is required. RESPONSE # 4 Use Sectional Doors (specifications attached) ADD Drawings attached (4 pages)

RECEIPT OF ADDENDA MUST BE ACKNOWLEDGED ON THE FORM OF TENDER.

PAGE 2 OF 2 END OF ADDENDUM 4

SECTION 08 36 13 SECTIONAL OVERHEAD INSULATED METAL DOORS

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1. PART 1 - GENERAL 1.1 WORK INCLUDED 1.1.1 Comply with Division 1, General Requirements and all documents referred to therein. 1.1.2 Provide all labour, materials, equipment and services required to supply and install the overhead

door indicated on the Drawings and specified herein.

1.2 REFERENCES

1.2.1 ASTM A653/A653M-15 Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process.

1.2.2 ASTM C165-07(2012) Standard Test Method for Measuring Compressive Properties of

Thermal Insulation.

1.2.3 CSA S16-14 Design of Steel Structures.

1.2.4 CSA W47.1-09(2014) Certification of Companies for Fusion Welding of Steel.

1.2.5 CSA W59-13 Welded Steel Construction (Metal Arc Welding), Includes Update No. 1 (2014), Update No. 3 (2015), Update No. 4 (2015).

1.2.6 CAN/CGSB 1.121-93 Vinyl Pretreatment Coating for Metals (Vinyl Wash Primer). 1.3 QUALITY ASSURANCE 1.3.1 Welding: By welder certified by the Canadian Welding Bureau under CSA W47.1, and in

compliance with CSA W59. File or grind exposed welds smooth and flush. Do not leave grinding marks.

1.4 SUBMITTALS 1.4.1 Shop drawings: Indicate materials, controls, hardware, connections, attachments, reinforcing,

anchorage and location of exposed fastenings.

1.4.2 Operating and Maintenance Data: Provide operating and maintenance data for incorporation into the Operating and Maintenance Manual.

2. PART 2 - PRODUCTS 2.1 APPROVED PRODUCTS AND MANUFACTURERS

2.1.1 This specification is based on 'Thermatite 175' sectional steel, polyurethane laminated, overhead doors by Richards Wilcox Door Systems (Toronto) Limited. The following manufacturer's shall also be accepted provided they conform in general with specified requirements:

.1 Steel-Craft Door Products Ltd.

.2 Upwardor Corporation.

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2.2 MATERIALS 2.2.1 Galvanized sheet steel: ASTM A653/A653M, coating weight 380g/ sq.m (1.25 oz/sq.ft) , door

sections and stiles 1.6 mm (16 gauge); door tracks 3 mm (12 gauge); back panels 0.6 mm (26 gauge) .

2.2.2 Insulation: Rigid, fibrous glass board insulation, “AF-530” by Owens-Corning Limited or other

approved manufacture. Insulation shall have a “k” factor of 1.4W/(sq m x °C (0.25 BTU/hr/sq ft/1”

thickness) at a mean temperature of 24 °C and a nominal density of 48 kg/cu m (3 pcf) . Deformation of insulation board shall not exceed 10% when tested at 38 kg/m (25 psf) in accordance with ASTM C165.

2.2.3 Priming paint treatment for non-galvanized components: Vinyl pre-treatment and vinyl primer

complying with CAN/CGSB 1.121 and 1.122, respectively. 2.2.4 Touch-up paint for galvanized surfaces: “Galvafroid SB grade” by W.R. Meadows of Canada Ltd.,

“Kem Organic Zinc Rich Primer No. 6430” by Sherwin-Williams Company of Canada Ltd., “Glidden #16113 Zinc Rich Primer” by the Glidden Co. Limited, or other approved zinc rich (95% content) coating.

2.2.5 Welding materials: CSA W59. 2.3 FABRICATION – GENERAL 2.3.1 Fabricate the work true to dimensions and square. Accurately fit joints and intersecting members

with adequate fastenings. 2.3.2 Fabricate finished work free from distortion and defects detrimental to appearance and

performance. 2.3.3 Unless otherwise specified, noted or approved, weld all connections. 2.3.4 Use shop and field connections as detailed. Where not detailed, connections shall comply with

CSA S16. 2.3.5 Do not prime non-ferrous metals 2.3.6 Where work is not specified to be galvanized, thoroughly de-scale the work after fabrication,

remove roughness and irregularities by grinding, clean with a wire brush, remove oil and grease and apply pre-treatment and primer.

2.4 FABRICATION – STEEL SECTIONAL OVERHEAD DOOR 2.4.1 Provide in locations shown on Drawings electrically operated insulated sectional steel overhead

doors, complete with standard lift hardware, tracks, steel jamb and head channels, door guides, electrical operator and controls.

2.4.2 Form sections to produce a door not less than 50 mm (2”) thick with a flush outside face. Roll door

sections to provide a rebated weather joint. Make each section of the door equal in height. Form stiles from 50 mm (2”) deep formed channels, cut accurately to fit the contour of the rolled sections and projection weld to the sections, forming a weld that does not destroy the exterior zinc coating.

2.4.3 Door sections shall be manufactured by a continuous foamed-in-place polyurethane lamination

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PROJECT 2170584 APRIL 2017 PAGE 08 36 13-3

process resulting in a homogenous sandwich of even-textured polyurethane insulation of metal/foam/metal construction to form a section 1-13/16" thick. Sections shall be roll-formed to produce a thermal break. Sections shall have a thermal resistance of minimum RSI of 2.15.

2.4.4 Weld back panels to door sections. Before applying the back panels, install 25 mm (1”) rigid

insulation cemented to the back of the face panels. 2.4.5 Roll form door tracks 75 mm (3”) deep, heavy duty. Fabricate and install door such that

maximum lift clearance is achieved. Reinforce tracks such that during door operation, deflection

is limited to 1/240 of the span, and rotation of track is limited to 1' 2.4.6 Provide heavy duty hinges bolted to stiles, with case hardened double row ball bearing rollers for

track. 2.4.7 Provide door counterbalances of minimum 100,000 cycle torsion springs coiled from oil

tempered wire. Lift doors with 5 mm (3/16”) diameter minimum galvanized steel airplane cable. Operate cast drums on a ball-mounted shaft. Provide extension springs for counterbalancing doors.

2.4.8 Weatherstrip the bottom door section with an extruded neoprene gasket to provide a tight,

freeze- proof, seal between the door and the finished floor. Provide a rubber seal strip at head of door. Overlap door behind jamb frames and weatherstripped wood stops 75 mm x 25 mm ( 3” x 1” ) clad in galvanized sheet steel.

2.4.9 Equip overhead door with 3 glass vision panels. All panels shall occur in one section. Arrange

panels symmetrically over door width. Provide one panel minimum for every 1200 mm (4’-0”) of door width. Factory-glaze vision panels using heat-welded neoprene gasketing and 6 mm (1/4”) thick S.G. grade Georgian wire-reinforced plate glass. Section to have panels shall be selected by the Consultant.

2.4.10 Provide door with a bolt surface-mounted on door interior at 900 mm (3’-0”) above finished floor

and arranged to engage jamb or a keeper welded to jamb and to lock using a padlock. Supply of padlocks not in contract.

2.5 TRACKS

2.5.1 Tracks shall be 3" heavy-duty gauge galvanized steel vertical lift track as indicated on drawings, designed for clearances shown. Provide complete track assembly including brackets, bracing and reinforcing for rigid support of the track for the required door type and size. Slope tracks at proper angle from vertical to ensure tight closure at jambs when the door is closed. Weld or bolt to track supports.

2.5.2 Provide steel roll-formed track channel. Track channel shall be faced with polyvinyl chloride (PVC). Track channel shall allow temperature change movements of the door to take place when subjected to extreme temperature variance between inside and outside.

2.6 POWER OPERATOR 2.6.1 Supply and mount a disconnect switch for door, located on the wall adjacent to door jambs or

elsewhere as shown on the Drawings. Provide necessary door operator wiring in rigid conduit and connect to the load side of the disconnect switch. Wiring and connection to the line side of the switch shall be provided under Division 26, Electrical.

2.6.2 Supply and securely mount a motor for the operation of door. Provide motor with a thermal

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overload device, a magnetic reversing starter and all necessary accessorised. All equipment shall be CSA and EEMAC approved.

2.6.3 Provide power train components necessary to transmit motor action to door motion. Suspend all

moving parts using sealed, pre-lubricated anti-friction bearings. Use end thrust bearings where required. Provide an override device, arrange to relieve the power train and motor if door is jammed.

2.6.4 Provide door with an emergency chain hoist with interlock switch for manual door operation in

case of power failure. 2.7 CONTROLS 2.7.1 Provide timers, relays, travel limit switches, interlocks and other devices necessary for door

control and to disconnect power when door is locked.

2.7.2 Supply and install in rigid conduit all wiring necessary for control devices. Conduit may be surface mounted except as otherwise noted or embedded in the topping or surfacing.

2.7.3 All devices shall be CSA approved and manufactured by Parking Products Canada Ltd.,

Cincinnati Time Recorder, or other approved manufacture. 2.8 DOOR PROTECTION DEVICE 2.8.1 Equip door edge with a weathertight, resilient gasket containing a switch mechanism sensitive

over the full door width to pressure applied as a point load. Gasket/switch shall be a Miller Safety Edge by Overhead Door Company or other approved manufacture.

2.8.2 Door shall be protected with a photo-electric cell and light source located as directed, and wired to

prevent commencement of door closing, and if closing is underway, to cause door to reverse instantly and open fully.

2.8.3 Door shall instantly reverse and re-open while closing in response to any of its “OPEN” controls

and to activation of its protective device. Re-opened door shall close when obstruction is removed (after the pre-determined door-open period).

2.9 DOOR 2.9.1 Provide door with a lockable push-button switch station words “OPEN” AND “CLOSE” impressed

on the appropriate buttons. Arrange control so that constant pressure on the “CLOSE” button shall cause the door to reverse instantly and open fully. Momentary pressure on the “OPEN” button shall cause the door to open fully.

2.9.2 Provide door with a Multi-Elmac radio control receiver having a keyed channel and tree (3)

portable, battery-operated Multi-Elmac transmitter. Adjust frequency of transmitter and receiver such that no interference is either caused or suffered by other electronic equipment existing with the range of the door control equipment. Radio signal shall cause door to open. Arrange signal from both inside and outside the basement.

2.9.3 Door opening for entering vehicles shall be initiated by operation of a transmitter operated switch

or key switch located within the garage. 2.9.4 Door opening for exiting vehicles shall be initiated by an operation of a transmitter operated switch

or key switch located within the garage.

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2.9.5 Door closing for entering vehicles shall be initiated by an operation of a transmitter operated switch or key switch located within the garage.

2.9.6 Door shall remain fully open for 30 seconds minimum after which it shall close automatically.

Duration of door open interval shall be adjustable.

2.10 FINISHES

2.10.1 All exposed steel surfaces shall be suitably cleaned and pre-treated. Apply one coat of manufacturer's standard shop primer. Ready for finish painting by Section 09 90 00.

3. PART 3 - EXECUTION 3.1 INSTALLATION 3.1.1 Erect doors in accordance with manufacturer’s instructions.

3.1.2 Install doors, tracks and operating equipment complete with necessary hardware, jamb and head mould stops, anchors, brackets and accessories.

3.1.3 Mount counterbalance mechanism with manufacturer's fully adjustable ball bearing brackets at each end of shaft. Furnish torsion shaft centre support bearings as required for size and weight of doors.

3.1.4 Fasten vertical track assembly to framing at maximum 24" O.C.

3.1.5 Install weather seals at heads, jambs and door bottoms as recommended by door manufacturer to form a continuous weathertight seal at door perimeter.

3.1.6 Doors shall fit snugly to all edges of jambs and heads of frames and shall operate smoothly and freely under all conditions of operation. Door shall sit in any position in door opening and shall not drift upward or downward.

3.1.7 Install electrical motors, controller units, push-button stations, relays and other electrical equipment required for door operation.

3.2 ADJUSTMENT AND DEMONSTRATION 3.2.1 On completion, and when directed by the Consultant, adjust and lubricate overhead doors, check

and adjust controls, ensure that all equipment and mechanisms are operating smoothly, and demonstrate the operation, control and safety features of each door to the Owner.

3.2.2 Supply three transmitter control devices to the Owner.

3.3 CLEANING AND CLEAN-UP

3.3.1 Clean and make good to the Consultant's approval, surfaces soiled or otherwise damaged in connection with the work of this section. Contractor shall pay the cost of replacing finishes or materials that cannot be satisfactorily cleaned.

3.3.2 On completion of the work of this section, remove all debris, equipment and excess material from the site that results from the work of this section.

END OF SECTION