D ESIGN R EQUIREMENTS

.1 Design glass, glazing channels, connections, attachments and glazing accessories to withstand loads designated by the British Columbia Building Code (BCBC) and to accommodate all building deflections.

.2 Design shall be prepared, signed and sealed by a Structural engineer registered in the province of British Columbia.

.3 At the completion of the work provide a Letter of Assurance in accordance with the BC Building Code signed and sealed by the Engineer confirming that the glazing has been fabricated and installed in accordance with approved shop drawings. Letter to be signed and sealed by a Professional Engineer registered in the Province of British Columbia.

.4 For systems forming part of the building enclosure there shall be no water infiltration when tested to 400 Pa pressure differential in accordance with ASTM E331 as per CAN/CSA-A440 Windows and British Columbia Building Code (BCBC).

1.5 SAMPLES

.1 Submit two (2) samples, each 12 inches X 12 inches, of each type of glass and mirrors to the Consultant for approval.

.2 Submit two (2) samples of each type of exposed steel, stainless steel or aluminum to the Consultant for approval.

.3 Submit two (2) samples of each proposed colored glazing for glass privacy walls in female and male washrooms.

1.6 SHOP DRAWINGS

.1 Furnish complete shop and erection drawings for all work included in this section to the Consultant for review prior to fabrication. Submit shop drawings as specified.

.2 Shop drawings for butt glazed interior partitions and windows; shall be designed and sealed by a Professional Engineer registered in British Columbia certifying that the partitions and rails have been designed to resist all loading requirements in accordance with the VBBL. Engineer shall provide Letters of Assurance as required by the authorities having jurisdiction.

.3 Shop drawings shall indicate all colours, sizes, quantities, thicknesses, materials, glass types, glazing compounds, sealants, anchorage and fastening details, hardware, glazing methods, etc. .4 No work shall be fabricated until the shop drawings and all other related submittals and samples

have been reviewed by the Consultant. 1.7 LETTERS OF ASSURANCE

.1 Submit Letters of Assurance for design and field review as required by authorities having jurisdiction.

1.8 PRODUCT DELIVERY,STORAGE AND HANDLING

.1 Deliver and store materials undamaged and where applicable in their original wrappings or containers with manufacturer's labels and seals intact. Store materials on a dry floor in a weatherproofed enclosure.

.2 Deliver and store factory-labeled glass to the job site in accordance with the Construction Schedule to keep handling to a minimum.

.3 Be responsible for breakage, from any cause, of glass supplied under this section. Replace broken units at no extra cost.

.4 Delivered materials which are damaged or in any way do not comply with these specifications will be rejected and shall be removed from the job site and replaced with acceptable materials at not extra cost.

2.1 GLASS

.1 For sizes and locations of all lights, refer to the drawings and schedules. Thicknesses indicated and specified are minimum only, thicker glass may be required to meet structural requirements. .2 Thickness of Glass: Conform to BCBC wind load requirements where applicable and according

to maximum glass sizes.

.3 Float Glass: Glazing quality, conforming to CAN\CGSB-12.3-M91.

.4 Safety (Tempered) Glass: Type 2, tempered, Class B, float or plate glass, conforming to CAN\CGSB-12.1-M90. Exposed edges polished.

.5 Laminated Glass: Clear; Minimum 2 layers clear 4 mm glass, .75 mm clear vinyl interlayer, exposed edges polished. CIP resin interlayers are not acceptable.

.6 Wired Glass: Type 1 (polished both sides), Style 3 (square wire mesh), conforming to CAN\CGSB-12.11-M90, 6mm thickness.

.7 Insulating Glass Units: Conform to CAN\CGSB-12.8-97, tempered where required by the BCBC. .8 Sealed Units: Double Glazed units where indicated. Insulated, hermetically sealed, outboard light clear, inside light clear (refer to Low E below). Glass units conforming to CAN/CGSB-12.8-M90, outer and inner layers of glass separated by minimum 13mm air space, framed with desiccant filled steel spacer. Temper as required by Code. Where noted, Low E coating to be “Solar E” by Pilkington; (Solar E coating on surface #2). Exterior glazed units to have a minimum U Value of 0.57 and minimum Shading Coefficient of 0.39.

.9 Glass:

.a All glass shall be clear fully tempered. Thickness of panels to be determined by glazing system manufacturer in accordance with specifications and drawings.

.c All edgework, holes and notches in the tempered glass panels will be completed before tempering and shall comply with the requirements of the manufacturer and as stated below.

.i Dimensional tolerance on panel size will be ± 1 mm of the theoretical dimension required.

.ii Squareness of each panel will be within 3 mm. .iii Bow allowance is 0.1%.

.iv The positional tolerances on all holes will be ± 1 mm from a single datum point. .e Prestress glass around holes to a level which is compatible with the design and use of

the fittings. Check by differential surface refractometer on stress level. 2.2 GLAZING MATERIALS

.1 Glazing Tape: non-shrinking butyl rubber tape with self-adhesive surface, minimum 4.8mm thick. Approved manufacturers are Tremco 440 tape; PTI 606 or other preapproved.

.2 Glazing Blocks: Of neoprene (70-90 Durometer hardness) to give minimum 4.8 mm clearance, and as required by glass weights and lights sizes.

.3 Spacer Blocks: Of neoprene (70-90 Durometer hardness) or of nonferrous metal and designed to be fully bedded in glazing materials, to give minimum 4.8 mm clearance, and as required by glass weights and light sizes.

.4 Solvent Cleaner: As required for above glazing materials and as recommended by their approved manufacturer.

.5 Exposed Structural Fittings: Stainless steel, Type 316, No. 4 satin brushed finish. .6 Concealed Anchors and Fittings: as per reviewed shop drawings.

.7 Aluminum: as per reviewed shop drawings. Clear anodized finish to Aluminum Association specification AA-M12 C22A31.

.8 Resilient Gaskets: Black neoprene or vinyl resilient gaskets and isolators designed to prevent direct metal to glass contact and hold glass in a permanent position at handrail connection in security screens.

.9 Fasteners: Stainless steel stove bolts to ASTM A325-02, Type 1.

.10 Structural Sealants: for glass to glass contact: CGE SSG-4000, Dow 795, Guardian Silicone Structural Glazing Sealants. Colour shall be black.

2.3 MIRRORS

.1 Mirrors shall conform to CAN/CGSB-12.5-M86 (No. 1 quality). All mirrors 6 mm thick polished plate or float glass, backed with silvered copper paint. Sizes as indicated on drawings. All edges will be ground smooth and polished.

.2 The quality of the mirrors shall be silvering quality, guaranteed against silver spoilage for a least ten (10) years.