088000.pdf

088000 - 1 GLASS AND GLAZING

SECTION 088000 - GLASS AND GLAZING

PART 1 - GENERAL

1.1 DESCRIPTION

A. Conditions of the Contract and Division 1 apply to this Section.

B. Provide all labor, materials, and equipment to complete glass and glazing work as indicated in the Contract Documents.

C. Scope of this Section includes all glass and glazing window units not indicated as "preglazed".

D. Mirrors and mirrored glass are not included under the scope of this Section.

E. Provide sealed double pane windows where double glazed, insulated or thermal-pane windows are scheduled, detailed, or performance required.

1.2 QUALITY ASSURANCE

A. Performance Standards

1. Watertight and airtight installation of each glass product is required, except as otherwise shown. Each installation must withstand normal temperature changes, wind loading, impact loading (for operating sash and doors), without failure including loss or breakage of glass, failure of sealants or gaskets to remain airtight and watertight, deterioration of glazing materials and other defects in the work.

2. Comply with combined recommendations and technical reports by manufacturers of glass and glazing products as used in each glazing channel and with recommendations of Flat Glass Marketing Association, "Glazing Manual", except where more stringent requirements are indicated.

3. Install insulating glass units to comply with recommendations by Sealed Insulating Glass Manufacturer's Association, except as otherwise specifically indicated or recommended by glass and sealant manufacturers.

1.3 SUBMITTALS

A. Product Data: Submit catalog cuts and charts showing properties, recommended installation details, instructions, and glazing procedures, including rabbet depth guidelines.

B. Samples: Submit 8" x 8" sample of each glazing in color as specified.

C. Warranty: As required by door and/or window frame specifications.

1.4 PRODUCT DELIVERY, STORAGE AND HANDLING

A. Delivery, storage and handling shall be accomplished in such a manner so as to prevent damage to construction and finish of product.

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PART 2 - PRODUCTS

2.1 MATERIALS

A. Float/Plate Glass: Type I, Quality q3, clear unless otherwise indicated.

B. GL-01

Tempered Glass: Provide prime glass of color and type as indicated, which has been tempered to strengthen glass in bending to not less than 2.0 times annealed strength.

Tempered glass is to be used at all locations where possible impacts from pedestrians and hand carried objects may occur and where applicable codes dictate.

C. Laminated Glass: (Use for Sound Insulating Units)

1. Double laminated glass (Laminate-Air Space-Laminate), comply with ASTM C1172.

a. Nominal overall thickness: 1”

b. Unit Configuration: 2 layers 1/8” float glass—air space—2 layers 1/8” float glass.

c. Indoor light: Clear

d. Outdoor light: Clear

D. ATFP (Antiterrorism Force Protection) Glazing: glazing designed per UFC 4-010-01 section B-2.2.1 of the United States Department of Defense Unified Facilities Criteria (UFC). Use a minimum of 6-mm (1/4-in) nominal laminated glass for all exterior windows and glazed doors. The 6-mm (1/4-in) laminated glass consists of two nominal 3-mm (1/8-in) float glass panes bonded together with a minimum of a 0.75-mm (0.030-inch) polyvinyl-butyral (PVB) interlayer. For insulating glazing units, use 6mm (1/4 inch) laminated glass inner pane as a minimum.

E. GL-02 (WINDOW UNITS)

Insulating Glass: Shall be 1” overall thickness.

1. Interior side glazing: ¼” total thickness of ATFP glazing with performances as stated above on the interior pane.

2. Exterior side glazing: ¼” total thickness of float glazing with tint as selected by

Contracting Officer, except provide tempered glazing at all locations where possible impacts from pedestrians and hand carried objects may occur and where applicable codes dictate

3. Provide “Solar-Control Low E” coating on either the #2 or #3 pane.

4. Edge Construction: Shall be dual seal with silicone edge seal.

5. Required Performance: ±80% visible light transmittance, 20% maximum visible exterior light reflectance, and U-value of 0.31 maximum for winter at night.

6. Warranty: Provide manufacturer's standard 10 year product warranty on hermetic seal. Warranty shall be given directly to the Government by the window Mfg.

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F. GL-03 (GLAZED CURTAINWALL)

Insulating Glass: Shall be 1” overall thickness.

1. Interior side glazing: ¼” total thickness of ATFP glazing with performances as stated above on the interior pane.

2. Exterior side glazing: ¼” total thickness of float glazing with tint as selected by

Contracting Officer, except provide tempered glazing at all locations where possible impacts from pedestrians and hand carried objects may occur and where applicable codes dictate

3. Provide “Solar-Control Low E” coating on either the #2 or #3 pane.

4. Edge Construction: Shall be dual seal with silicone edge seal.

5. Required Performance: ±5% visible light transmittance, 5% maximum visible exterior light reflectance, and U-value of 0.48 maximum for winter at night.

a. Basis of Design Manufacturer and Product:

1) PPG: Solarcool (2) Graylite + Clear

6. Warranty: Provide manufacturer's standard 10 year product warranty on hermetic seal. Warranty shall be given directly to the Government by the window Mfg.

G. GL-04 (ELLIPTICAL FANLIGHT – ATTIC WINDOW)

1. Windows: Approximately 24 by 11 inches, with curved corners, and spaced apart the approximate distance as indicated on Drawings; in one row at height indicated on Drawings; installed with clear plastic glazing of the following type:

2. Clear Acrylic Plastic: 1/8” thick, transparent, smooth or polished, and formulated to be UV resistant.

3. Glass is not permitted

H. Glazing Gaskets and Accessories

1. Comply with manufacturer's recommendations to construct and maintain a watertight seal in interior or exterior or otherwise demanding environments.

PART 3 - EXECUTION

3.1 INSPECTION

A. Verify prepared openings and frames are in accordance with recommendations of glazing manufacturer.

B. Verify that openings are correctly sized and within recommended tolerances.

C. Verify that surfaces of glazing channels and recesses are clean, free of obstructions and ready to receive glazing materials.

D. Beginning of installation constitutes acceptance of substrate.

3.2 INSTALLATION

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A. Clean glazing channel and other framing members to receive glass immediately before glazing. Remove coatings which are not firmly bonded to substrate. Remove lacquer from metal surfaces where elastomeric sealants are used.

B. Apply primer or sealant to joint surfaces where recommended by sealant manufacturer.

C. Install setting block of proper size in sill rabbet, located 1/4 of glass width from each corner. Set blocks in thin course of heel-bead compound, if any.

D. Provide spacers inside and out, of proper size and spacing, for glass sizes larger than 50 unit inches, except where gaskets or preshimmed tapes are used for glazing.

Provide 1/8" minimum bite of spacers on glass and use thickness equal to sealant width, except with sealant tape use thickness slightly less than final compressed thickness of tape.

E. Set units of glass in each series with uniformity of pattern, draw, bow, and similar characteristics.

F. Voids and Filler Rods: Prevent exudation of sealant or compound by forming voids or installing filler rods in channel at heel of jambs and head (do not leave voids in still channels), except as otherwise indicated and depending on light size, thickness, and type of glass and complying with manufacture's recommendations.

G. Force sealants into channel to eliminate voids and to ensure complete "wetting" or bond of sealant to glass and channel surfaces.

H. Tool exposed surfaces of glazing liquids and compounds to provide a substantial "wash" away from glass. Install pressurized tapes and gaskets to protrude slightly out of channel, so as to eliminate dirt and moisture pockets.

I. Clean and trim excess glazing materials from glass and stops or frames promptly after installation to eliminate stains and discolorations.

J. Where wedge shaped gaskets are driven into one side of channel to pressurize sealant or gasket on opposite side, provide adequate anchorage to ensure that gasket will not "walk" out when installation is subjected to movement. Anchor gasket to stop with matching ribs or by proven adhesives, including embedment of gasket tail in cured heel bead.

K. Gasket Glazing: Miter cut and bond ends together at corners where gaskets are used for channel glazing, so that gaskets will not pull away from corners and result in voids or leaks in glazing system.

L. Structural Gasket Glazing: Cut zipper strips slightly long, to ensure tight closure.

Lubricate zipper strip and use special tool to install zipper. Do not lubricate glazing channel or anchorage rabbet. Comply with details as shown and manufacturer's instructions, including the possible use of liquid sealants and weep holes.

3.3 ADJUST AND CLEAN

A. Protect exterior glass from breakage immediately upon installation, by use of crossed streamers attached to framing and held away from glass. Do not apply markers to

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surfaces of glass. Remove nonpermanent labels and clean surfaces. Cure sealants for high early strength and durability.

B. Remove and replace glass which is broken, chipped, cracked, abraded or damaged in other ways during construction period, including natural causes, accidents and vandalism.

C. Wash and polish glass on both faces not more than 4 days prior to date scheduled for inspections intended to establish date of substantial completion in each area of project.

Comply with glass product manufacturer's recommendations for final cleaning.

D. Clean premises of all litter, dirt, and debris created by work of this Section. Leave premises broom clean.

END OF SECTION 088000