HomeMy WebLinkAbout08800.pdf BICKFORD OF CARMEL, IN 12/12/2012
GLAZING 08800 - 1
SECTION 08800 - GLAZING
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 1 Specification Sections, apply to this Section.
1.2 SUMMARY
A. This Section includes glazing for the following products and applications, including those
specified in other Sections where glazing requirements are specified by reference to this
Section:
1. Doors and Windows.
B. Related Sections include the following:
1. Division 8 Section "Mirrored Glass."
1.3 DEFINITIONS
A. Manufacturers of Glass Products: Firms that produce primary glass, fabricated glass, or both,
as defined in referenced glazing publications.
B. Glass Thicknesses: Indicated by thickness designations in millimeters according to
ASTM C 1036.
C. Interspace: Space between lites of an insulating-glass unit that contains a specified gas.
D. Deterioration of Insulating Glass: Failure of hermetic seal under normal use that is attributed to
the manufacturing process and not to causes other than glass breakage and practices for
maintaining and cleaning insulating glass contrary to manufacturer's written instructions.
Evidence of failure is the obstruction of vision by dust, moisture, or film on interior surfaces of
glass.
1.4 PERFORMANCE REQUIREMENTS
A. General: Provide glazing systems capable of withstanding normal thermal movement and wind
and impact loads (where applicable) without failure, including loss or glass breakage attributable
to the following: defective manufacture, fabrication, and installation; failure of sealants or
gaskets to remain watertight and airtight; deterioration of glazing materials; or other defects in
construction.
B. Glass Design: Glass thickness designations indicated are minimums and are for detailing only.
Confirm glass thicknesses by analyzing Project loads and in-service conditions. Provide glass
lites in the thickness designations indicated for various size openings, but not less than
thicknesses and in strengths (annealed or heat treated) required to meet or exceed the
following criteria:
BICKFORD OF CARMEL, IN 12/12/2012
GLAZING 08800 - 2
1. Glass Thicknesses: Select minimum glass thicknesses to comply with ASTM E 1300,
according to the following requirements:
a. Specified Design Wind Loads: Not less than wind loads applicable to Project as
required by ASCE 7 "Minimum Design Loads for Buildings and Other Structures":
Section 6.0 "Wind Loads."
b. Design Wind Loads: Determine design wind loads applicable to Project from basic
wind speed indicated in miles per hour (meters per second) at 33 feet (10 m)
above grade, according to ASCE 7, "Minimum Design Loads for Buildings and
Other Structures": Section 6.5, "Method 2-Analytical Procedure," based on mean
roof heights above grade indicated on Drawings.
c. Probability of Breakage for Vertical Glazing: 8 lites per 1000 for lites set vertically
or not more than 15 degrees off vertical and under wind action.
1) Load Duration: 60 seconds or less.
d. Maximum Lateral Deflection: For the following types of glass supported on all 4
edges, provide thickness required that limits center deflection at design wind
pressure to 1/50 times the short side length or 1 inch (25 mm), whichever is less.
1) For monolithic-glass lites heat treated to resist wind loads.
2) For insulating glass.
e. Minimum Glass Thickness for Exterior Lites: Not less than 6.0 mm.
C. Thermal Movements: Provide glazing that allows for thermal movements resulting from the
following maximum change (range) in ambient and surface temperatures acting on glass
framing members and glazing components. Base engineering calculation on surface
temperatures of materials due to both solar heat gain and nighttime-sky heat loss.
1. Temperature Change (Range): 120 deg F (67 deg C), ambient; 180 deg F (100 deg C),
material surfaces.
D. Thermal and Optical Performance Properties: Provide glass with performance properties
specified based on manufacturer's published test data, as determined according to procedures
indicated below:
1. For insulating-glass units, properties are based on units of thickness indicated for overall
unit and for each lite.
2. Center-of-Glass Values: Based on using LBL-44789 WINDOW 5.0 computer program for
the following methodologies:
a. U-Factors: NFRC 100 expressed as Btu/ sq. ft. x h x deg F (W/sq. m x K).
b. Solar Heat Gain Coefficient: NFRC 200.
c. Solar Optical Properties: NFRC 300.
1.5 SUBMITTALS
A. Product Data: For each glass product and glazing material indicated.
B. Samples: For the following products, in the form of 12-inch- (300-mm-) square Samples for
glass.
1. Rated glass.
BICKFORD OF CARMEL, IN 12/12/2012
GLAZING 08800 - 3
2. Insulating glass for each designation indicated.
C. Glazing Schedule: Use same designations indicated on Drawings for glazed openings in
preparing a schedule listing glass types and thicknesses for each size opening and location.
D. Product Certificates: Signed by manufacturers of glass and glazing products certifying that
products furnished comply with requirements.
E. Warranties: Special warranties specified in this Section.
1.6 QUALITY ASSURANCE
A. Installer Qualifications: An experienced installer who has completed glazing similar in material,
design, and extent to that indicated for this Project; whose work has resulted in glass
installations with a record of successful in-service performance; and who employs glass
installers for this Project who are certified under the National Glass Association's Certified Glass
Installer Program.
B. Source Limitations for Glazing Accessories: Obtain glazing accessories through one source
from a single manufacturer for each product and installation method indicated.
C. Safety Glazing Products: Comply with testing requirements in 16 CFR 1201 and, for wired
glass, ANSI Z97.1.
1. Subject to compliance with requirements, obtain safety glazing products permanently
marked with certification label of the Safety Glazing Certification Council or another
certification agency or manufacturer acceptable to authorities having jurisdiction.
2. Where glazing units, including Kind FT glass and laminated glass, are specified in Part 2
articles for glazing lites more than 9 sq. ft. (0.84 sq. m) in exposed surface area of one
side, provide glazing products that comply with Category II materials, for lites 9 sq. ft.
(0.84 sq. m) or less in exposed surface area of one side, provide glazing products that
comply with Category I or II materials, except for hazardous locations where Category II
materials are required by 16 CFR 1201 and regulations of authorities having jurisdiction.
D. Glazing Publications: Comply with published recommendations of glass product manufacturers
and organizations below, unless more stringent requirements are indicated. Refer to these
publications for glazing terms not otherwise defined in this Section or in referenced standards.
1. GANA Publications: GANA's "Glazing Manual."
2. IGMA Publication for Insulating Glass: SIGMA TM-3000, "Glazing Guidelines for Sealed
Insulating Glass Units."
1.7 DELIVERY, STORAGE, AND HANDLING
A. Protect glazing materials according to manufacturer's written instructions and as needed to
prevent damage to glass and glazing materials from condensation, temperature changes, direct
exposure to sun, or other causes.
B. For insulating-glass units that will be exposed to substantial altitude changes, comply with
insulating-glass manufacturer's written recommendations for venting and sealing to avoid
hermetic seal ruptures.
BICKFORD OF CARMEL, IN 12/12/2012
GLAZING 08800 - 4
1.8 PROJECT CONDITIONS
A. Environmental Limitations: Do not proceed with glazing when ambient and substrate
temperature conditions are outside limits permitted by glazing material manufacturers and when
glazing channel substrates are wet from rain, frost, condensation, or other causes.
1. Do not install liquid glazing sealants when ambient and substrate temperature conditions
are outside limits permitted by glazing sealant manufacturer or below 40 deg F (4.4
deg C).
1.9 WARRANTY
A. Manufacturer's Special Warranty on Insulating Glass: Manufacturer's standard form, made out
to Owner and signed by insulating-glass manufacturer agreeing to replace insulating-glass units
that deteriorate as defined in "Definitions" Article, f.o.b. the nearest shipping point to Project
site, within specified warranty period indicated below.
1. Warranty Period: 10 years from date of Substantial Completion.
PART 2 - PRODUCTS
2.1 GLASS PRODUCTS
A. Annealed Float Glass: ASTM C 1036, Type I (transparent flat glass), Quality-Q3; of class
indicated.
B. Heat-Treated Float Glass: ASTM C 1048; Type I (transparent flat glass); Quality-Q3; of class,
kind, and condition indicated.
1. For uncoated glass, comply with requirements for Condition A.
2. For coated vision glass, comply with requirements for Condition C (other uncoated glass).
3. Provide Kind FT (fully tempered) float glass in place of annealed or Kind HS (heat-
strengthened) float glass where safety glass is indicated.
C. Insulating-Glass Units, General: Factory-assembled units consisting of sealed lites of glass
separated by a dehydrated interspace, and complying with ASTM E 774 for Class CBA units
and with requirements specified in this Article and in Part 2 "Insulating-Glass Units" Article.
1. Provide Kind HS (heat-strengthened) float glass in place of annealed glass where
needed to resist thermal stresses induced by differential shading of individual glass lites
and to comply with glass design requirements specified in Part 1 "Performance
Requirements" Article.
2. Provide Kind FT (fully tempered) glass lites where safety glass is indicated.
3. Overall Unit Thickness and Thickness of Each Lite: Dimensions indicated for insulating-
glass units are nominal and the overall thicknesses of units are measured perpendicularly
from outer surfaces of glass lites at unit's edge.
4. Sealing System: Dual seal, with primary and secondary sealants as follows:
a. Manufacturer's standard sealants.
5. Spacer Specifications: Manufacturer's standard spacer material and construction.
a. Corner Construction: Manufacturer's standard corner construction.
BICKFORD OF CARMEL, IN 12/12/2012
GLAZING 08800 - 5
2.2 GLAZING GASKETS
A. Dense Compression Gaskets: Molded or extruded gaskets of material indicated below,
complying with standards referenced with name of elastomer indicated below, and of profile and
hardness required to maintain watertight seal:
1. EPDM, ASTM C 864.
2. Silicone, ASTM C 1115.
3. Thermoplastic polyolefin rubber, ASTM C 1115.
4. Any material indicated above.
2.3 GLAZING TAPES
A. Back-Bedding Mastic Glazing Tapes: Preformed, butyl-based elastomeric tape with a solids
content of 100 percent; nonstaining and nonmigrating in contact with nonporous surfaces; with
or without spacer rod as recommended in writing by tape and glass manufacturers for
application indicated; packaged on rolls with a release paper backing; and complying with
ASTM C 1281 and AAMA 800 for products indicated below:
1. AAMA 807.3 tape, for glazing applications in which tape is not subject to continuous
pressure.
B. Expanded Cellular Glazing Tapes: Closed-cell, PVC foam tapes; factory coated with adhesive
on both surfaces; packaged on rolls with release liner protecting adhesive; and complying with
AAMA 800 for the following types:
1. Type 1, for glazing applications in which tape acts as the primary sealant.
2. Type 2, for glazing applications in which tape is used in combination with a full bead of
liquid sealant.
2.4 MISCELLANEOUS GLAZING MATERIALS
A. General: Provide products of material, size, and shape complying with referenced glazing
standard, requirements of manufacturers of glass and other glazing materials for application
indicated, and with a proven record of compatibility with surfaces contacted in installation.
B. Cleaners, Primers, and Sealers: Types recommended by sealant or gasket manufacturer.
C. Setting Blocks: Elastomeric material with a Shore, Type A durometer hardness of 85, plus or
minus 5.
D. Spacers: Elastomeric blocks or continuous extrusions with a Shore, Type A durometer
hardness required by glass manufacturer to maintain glass lites in place for installation
indicated.
E. Edge Blocks: Elastomeric material of hardness needed to limit glass lateral movement (side
walking).
2.5 FABRICATION OF GLAZING UNITS
A. Fabricate glazing units in sizes required to glaze openings indicated for Project, with edge and
face clearances, edge and surface conditions, and bite complying with written instructions of
product manufacturer and referenced glazing publications, to comply with system performance
requirements.
BICKFORD OF CARMEL, IN 12/12/2012
GLAZING 08800 - 6
2.6 INSULATING-GLASS UNITS
A. Clear Insulating-Glass Units IG-1:
1. Overall Unit Thickness and Thickness of Each Lite: 7/8" inch and 1/8" inch.
2. Interspace Content: Argon.
3. Outdoor Lite: grey tinted float glass.
a. Kind FT (fully tempered).
b. Self-Cleaning, Low-Maintenance Coating: Pyrolytic coating on first surface.
4. Indoor Lite: Class 1 (clear)float glass.
a. Kind FT (fully tempered).
PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine framing glazing, with Installer present, for compliance with the following:
1. Manufacturing and installation tolerances, including those for size, squareness, and
offsets at corners.
2. Presence and functioning of weep system.
3. Minimum required face or edge clearances.
4. Effective sealing between joints of glass-framing members.
B. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 PREPARATION
A. Clean glazing channels and other framing members receiving glass immediately before glazing.
Remove coatings not firmly bonded to substrates.
3.3 GLAZING, GENERAL
A. Comply with combined written instructions of manufacturers of glass, sealants, gaskets, and
other glazing materials, unless more stringent requirements are indicated, including those in
referenced glazing publications.
B. Glazing channel dimensions, as indicated on Drawings, provide necessary bite on glass,
minimum edge and face clearances, and adequate sealant thicknesses, with reasonable
tolerances. Adjust as required by Project conditions during installation.
C. Protect glass edges from damage during handling and installation. Remove damaged glass
from Project site and legally dispose of off Project site. Damaged glass is glass with edge
damage or other imperfections that, when installed, could weaken glass and impair
performance and appearance.
BICKFORD OF CARMEL, IN 12/12/2012
GLAZING 08800 - 7
D. Install setting blocks in sill rabbets, sized and located to comply with referenced glazing
publications, unless otherwise required by glass manufacturer. Set blocks in thin course of
compatible sealant suitable for heel bead.
E. Do not exceed edge pressures stipulated by glass manufacturers for installing glass lites.
F. Provide spacers for glass lites where length plus width is larger than 50 inches (1270 mm) as
follows:
1. Locate spacers directly opposite each other on both inside and outside faces of glass.
Install correct size and spacing to preserve required face clearances, unless gaskets and
glazing tapes are used that have demonstrated ability to maintain required face
clearances and to comply with system performance requirements.
2. Provide 1/8-inch (3-mm) minimum bite of spacers on glass and use thickness equal to
sealant width. With glazing tape, use thickness slightly less than final compressed
thickness of tape.
G. Provide edge blocking where indicated or needed to prevent glass lites from moving sideways
in glazing channel, as recommended in writing by glass manufacturer and according to
requirements in referenced glazing publications.
H. Set glass lites in each series with uniform pattern, draw, bow, and similar characteristics.
I. Where wedge-shaped gaskets are driven into one side of channel to pressurize sealant or
gasket on opposite side, provide adequate anchorage so gasket cannot walk out when
installation is subjected to movement.
J. Square cut wedge-shaped gaskets at corners and install gaskets in a manner recommended by
gasket manufacturer to prevent corners from pulling away; seal corner joints and butt joints with
sealant recommended by gasket manufacturer.
3.4 TAPE GLAZING
A. Position tapes on fixed stops so that, when compressed by glass, their exposed edges are flush
with or protrude slightly above sightline of stops.
B. Install tapes continuously, but not necessarily in one continuous length. Do not stretch tapes to
make them fit opening.
C. Cover vertical framing joints by applying tapes to heads and sills first and then to jambs. Cover
horizontal framing joints by applying tapes to jambs and then to heads and sills.
D. Place joints in tapes at corners of opening with adjoining lengths butted together, not lapped.
Seal joints in tapes with compatible sealant approved by tape manufacturer.
E. Do not remove release paper from tape until just before each glazing unit is installed.
F. Apply heel bead of elastomeric sealant.
G. Center glass lites in openings on setting blocks and press firmly against tape by inserting dense
compression gaskets formed and installed to lock in place against faces of removable stops.
Start gasket applications at corners and work toward centers of openings.
H. Apply cap bead of elastomeric sealant over exposed edge of tape.
BICKFORD OF CARMEL, IN 12/12/2012
GLAZING 08800 - 8
3.5 GASKET GLAZING (DRY)
A. Fabricate compression gaskets in lengths recommended by gasket manufacturer to fit openings
exactly, with allowance for stretch during installation.
B. Center glass lites in openings on setting blocks and press firmly against soft compression
gasket by inserting dense compression gaskets formed and installed to lock in place against
faces of removable stops. Start gasket applications at corners and work toward centers of
openings. Compress gaskets to produce a weathertight seal without developing bending
stresses in glass. Seal gasket joints with sealant recommended by gasket manufacturer.
C. Install gaskets so they protrude past face of glazing stops.
3.6 CLEANING AND PROTECTION
A. Protect exterior glass from damage immediately after installation by attaching crossed
streamers to framing held away from glass. Do not apply markers to glass surface. Remove
nonpermanent labels, and clean surfaces.
B. Protect glass from contact with contaminating substances resulting from construction
operations, including weld splatter. If, despite such protection, contaminating substances do
come into contact with glass, remove substances immediately as recommended by glass
manufacturer.
C. Examine glass surfaces adjacent to or below exterior concrete and other masonry surfaces at
frequent intervals during construction, but not less than once a month, for buildup of dirt, scum,
alkaline deposits, or stains; remove as recommended in writing by glass manufacturer.
D. Remove and replace glass that is broken, chipped, cracked, or abraded or that is damaged from
natural causes, accidents, and vandalism, during construction period.
E. Wash glass on both exposed surfaces in each area of Project not more than four days before
date scheduled for inspections that establish date of Substantial Completion. Wash glass as
recommended in writing by glass manufacturer.
END OF SECTION 08800