Specifications
Specifications
SECTION 08810A
GLASS AND GLAZING
PART 1 GENERAL
1.1 REFERENCES
1.2 SUBMITTALS
1.3 SYSTEM DESCRIPTION
1.4 DELIVERY, STORAGE AND HANDLING
1.5 PROJECT/SITE CONDITIONS
1.6 WARRANTY
1.6.1 Insulating Glass
PART 2 PRODUCTS
2.1 INSULATING GLASS
2.1.1 Clear Insulating Glass
2.2 LAMINATED GLAZINGS
2.2.1 Laminated Glass
2.3 CLERESTORY POLYCARBONATE GLAZING
2.4 GLAZING ACCESSORIES
2.4.1 Preformed Tape
2.4.2 Sealant
2.4.3 Glazing Gaskets
2.4.3.1 Fixed Glazing Gaskets
2.4.3.2 Wedge Glazing Gaskets
2.4.3.3 Aluminum Framing Glazing Gaskets
2.4.4 Putty and Glazing Compound
2.4.5 Setting and Edge Blocking
PART 3 EXECUTION
3.1 PREPARATION
3.2 INSTALLATION
3.3 CLEANING
3.4 PROTECTION
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SECTION 08810A
GLASS AND GLAZING
PART 1 GENERAL
1.1 REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by basic designation only.
AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)
ANSI Z97.1 (1984; R 1994) Safety Performance
Specifications and Methods of Test for
Safety Glazing Materials Used in Buildings
AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)
ASTM C 509
(1994) Elastomeric Cellular Preformed
Gasket and Sealing Material
ASTM C 669
(1995) Glazing Compounds for Back Bedding
and Face Glazing of Metal Sash
ASTM C 864
(1999) Dense Elastomeric Compression Seal
Gaskets, Setting Blocks, and Spacers
ASTM C 920
(2002) Elastomeric Joint Sealants
ASTM C 1036
(1991; R 1997) Flat Glass
ASTM C 1172
(1996el) Laminated Architectural Flat Glass
ASTM D 395
(1998) Rubber Property - Compression Set
ASTM E 773
(1997) Accelerated Weathering of Sealed
Insulating Glass Units
ASTM E 774
(1997) Classification of the Durability of
Sealed Insulating Glass Units
ASTM E 1300
(1998) Determining the Minimum Thickness and Type of Glass Required to Resist a Specified Load
U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)
16 CFR 1201 Safety Standard for Architectural Glazing
Materials
U.S. GENERAL SERVICES ADMINISTRATION (GSA)
CID A-A-378 (Basic) Putty Linseed Oil Type, (for Wood-Sash-Glazing)
GLASS ASSOCIATION OF NORTH AMERICA (GANA)
GANA Glazing Manual (1997) Glazing Manual
1.2 SUBMITTALS
Architect approval is required for submittals with a "A" designation; submittals not having a "A" designation are for information only. When used, a designation following the "A" designation identifies the office that will review the submittal. The following shall be submitted in accordance with Section 01330 SUBMITTAL PROCEDURES:
SD-02 Shop Drawings
Installation
Drawings showing complete details of the proposed setting methods, mullion details, edge blocking, size of openings, frame details, materials, and types and thickness of glass.
SD-03 Product Data
Insulating Glass
Clerestory Polycarbonate Glazing
Glazing Accessories
Manufacturer's descriptive product data, handling and storage recommendations, installation instructions, and cleaning instructions.
SD-04 Samples
Insulating Glass
Clerestory Polycarbonate Glazing
Two 203 x 254 mm samples of each of the following: insulating glass units and polycarbonate glazing units.
SD-07 Certificates
Insulating Glass
Certificates stating that the glass meets the specified requirements. Labels or manufacturers marking affixed to the glass will be accepted in lieu of certificates.
Glazing Accessories
1.3 SYSTEM DESCRIPTION
Glazing systems shall be fabricated and installed watertight and airtight to withstand thermal movement and wind loading without glass breakage, gasket failure, deterioration of glazing accessories, and defects in the work. Glazed panels shall comply with the safety standards, as indicated in accordance with ANSI Z97.1. Glazed panels shall comply with indicated wind loading in accordance with ASTM E 1300.
1.4 DELIVERY, STORAGE AND HANDLING
Glazing compounds shall be delivered to the site in the manufacturer's unopened containers. Glass shall be stored indoors in a safe, well ventilated dry location in accordance with manufacturer's instructions, and shall not be unpacked until needed for installation. Glass shall not be stored on site over 1 month.
1.5 PROJECT/SITE CONDITIONS
Glazing work shall not be started until outdoor temperature is above 5 degrees C and rising, unless procedures recommended by glass manufacturer and approved by Contracting Officer are made to warm the glass and rabbet surfaces. Ventilation shall be provided to prevent condensation of moisture on glazing work during installation. Glazing work shall not be performed during damp or raining weather.
1.6 WARRANTY
1.6.1 Insulating Glass
Manufacturer shall warrant the insulating glass to be free of fogging or film formation on the internal glass surfaces caused by failure of the hermetic seal for a period of 10 years from Date of Substantial Completion. Warranty shall be signed by manufacturer.
PART 2 PRODUCTS
2.1 INSULATING GLASS
Insulating glass shall be Class A preassembled units of dual-seal construction consisting of lites of glass separated by an aluminum, steel, or stainless steel, spacer and dehydrated space conforming to ASTM E 773 and ASTM E 774. Spacer shall be roll-formed, with bent or tightly welded or keyed and sealed joints to completely seal the spacer periphery and eliminate moisture and hydrocarbon vapor transmission into airspace through the corners. Primary seal shall be compressed polyisobutylene and the secondary seal shall be a specially formulated silicone. Glass types shall be as follows:
2.1.1 Clear Insulating Glass
Glass for two-pane insulating units shall be tempered glass. tempered glass must have a surface compression of 10,000 psi
- clear, Quality q3 - glazing select, conforming to ASTM C 1036 for exterior pane and laminated glass as specified hereinafter for interior pane. Glass performance shall be U-Value/Winter Nighttime 0.5; R-Value/Winter Nighttime 2.0.
2.2 LAMINATED GLAZINGS
2.2.1 Laminated Glass
Laminated glass shall consist of two layers of Type I transparent float glass, Class 1-clear, Quality q3 - glazing select, conforming to
ASTM C 1036. Glass shall be bonded together with 0.76 mm thick PVB interlayer under pressure, or alternatives such as resin laminates, conforming to requirements of 16 CFR 1201 and ASTM C 1172.
2.3 CLERESTORY POLYCARBONATE GLAZING
Clerestory polycarbonate glazing shall be Polygal ThermoGal, 25 mm thick with 25 mm rib spacing, clear with 55 percent light transmission and 0.31 U Factory, or equal. Provide units with matching polycarbonate and aluminum trims.
2.4 GLAZING ACCESSORIES
2.4.1 Preformed Tape
Preformed tape shall be elastomeric rubber extruded into a ribbon of a width and thickness suitable for specific application. Tape shall be of type which will remain resilient, have excellent adhesion, and be chemically compatible to glass, metal, or wood.
2.4.2 Sealant
Sealant shall be elastomeric conforming to ASTM C 920, Type S or M, Grade NS, Class 12.5, Use G, of type chemically compatible with setting blocks, preformed sealing tape and sealants used in manufacturing insulating glass. Color of sealant shall be as selected.
2.4.3 Glazing Gaskets
Glazing gaskets shall be extruded with continuous integral locking projection designed to engage into metal glass holding members to provide a watertight seal during dynamic loading, building movements and thermal movements. Glazing gaskets for a single glazed opening shall be continuous one-piece units with factory-fabricated injection-molded corners free of flashing and burrs. Glazing gaskets shall be in lengths or units recommended by manufacturer to ensure against pull-back at corners.
2.4.3.1 Fixed Glazing Gaskets
Fixed glazing gaskets shall be closed-cell (sponge) smooth extruded compression gaskets of cured elastomeric virgin neoprene compounds conforming to ASTM C 509, Type 2, Option 1.
2.4.3.2 Wedge Glazing Gaskets
Wedge glazing gaskets shall be high-quality extrusions of cured elastomeric virgin neoprene compounds, ozone resistant, conforming to ASTM C 864, Option 1, Shore A durometer between 65 and 75.
2.4.3.3 Aluminum Framing Glazing Gaskets
Glazing gaskets for aluminum framing shall be permanent, elastic, non-shrinking, non-migrating, watertight and weathertight.
2.4.4 Putty and Glazing Compound
Glazing compound shall conform to ASTM C 669 for face-glazing metal sash. Putty shall be linseed oil type conforming to CID A-A-378 for face-glazing primed wood sash. Putty and glazing compounds shall not be used with insulating glass or laminated glass.
2.4.5 Setting and Edge Blocking
Neoprene setting blocks shall be dense extruded type conforming to ASTM D
395, Method B, Shore A durometer between 70 and 90. Edge blocking shall be
Shore A durometer of 50 (+ or - 5). Silicone setting blocks shall be required when blocks are in contact with silicone sealant. Profiles, lengths and locations shall be as required and recommended in writing by glass manufacturer.
PART 3 EXECUTION
3.1 PREPARATION
Openings and framing systems scheduled to receive glass shall be examined for compliance with approved shop drawings, GANA Glazing Manual and glass manufacturer's recommendations including size, squareness, offsets at corners, presence and function of weep system, face and edge clearance requirements and effective sealing between joints of glass-framing members. Detrimental materials shall be removed from glazing rabbet and glass surfaces and wiped dry with solvent. Glazing surfaces shall be dry.
3.2 INSTALLATION
Glass and glazing work shall be performed in accordance with approved shop drawings, GANA Glazing Manual, glass manufacturer's instructions and warranty requirements. Glass shall be installed with factory labels intact and removed only when instructed. Edges and corners shall not be ground, nipped or cut after leaving factory. Springing, forcing or twisting of units during installation will not be permitted.
3.3 CLEANING
Upon completion of project, outside surfaces of glass shall be washed clean and the inside surfaces of glass shall be washed and polished in accordance with glass manufacturer's recommendations.
3.4 PROTECTION
Glass work shall be protected immediately after installation. Glazed openings shall be identified with suitable warning tapes, cloth or paper flags, attached with non-staining adhesives. Glass units which are broken, chipped, cracked, abraded, or otherwise damaged during construction activities shall be removed and replaced with new units.
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