USACE / NAVFAC / AFCESA / NASA UFGS-08 81 00 (February 2009)
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Preparing Activity: NAVFAC Superseding
UFGS-08 81 00 (August 2008)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated January 2009
SECTION 08 81 00
GLAZING
02/09
NOTE: This guide specification covers the requirements for normal glazing.
Edit this guide specification for project specific requirements by adding, deleting,
or revising text. For bracketed items, choose applicable items(s) or insert
appropriate information.
Remove information and requirements not required in respective project, whether
or not brackets are present.
Comments and suggestions on this guide specification are welcome and should
be directed to the technical proponent of the specification. A listing of technical
proponents, including their organization designation and telephone number, is
on the Internet.
Recommended changes to a UFGS should be submitted as a Criteria Change Request
(CCR).
NOTE: If special glazing such as leaded glass, laminated transparent mirrors,
or plastic glazing for unprotected openings is required, add appropriate paragraphs.
NOTE: TO DOWNLOAD UFGS GRAPHICS
Go to http://www.wbdg.org/ccb/NAVGRAPH/graphtoc.pdf.
NOTE: On the drawings, show:
1. Locations of each type of glass, using same terminology as in specification.
2. Thickness of glass, unless glass of each type is same thickness.
3. Frame and rabbet details, indicating method of glazing.
PART 1 GENERAL
1.1 REFERENCES
NOTE: This paragraph is used to list the publications cited in the text of
the guide specification. The publications are referred to in the text by basic
designation only and listed in this paragraph by organization, designation,
date, and title.
Use the Reference Wizard's Check Reference feature when you add a RID outside
of the Section's Reference Article to automatically place the reference in the
Reference Article. Also use the Reference Wizard's Check Reference feature
to update the issue dates.
References not used in the text will automatically be deleted from this section
of the project specification when you choose to reconcile references in the
publish print process.
The publications listed below form a part of this specification to the extent referenced. The publications are
referred to within the text by the basic designation only.
[AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)ANSI Z97.1(2004) Safety Glazing Materials Used in Buildings][AMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE)ASCE 7(2005; Supp 1) Minimum Design Loads for Buildings and Other Structures][ASTM INTERNATIONAL (ASTM)ASTM C 1036(2006) Standard Specification for Flat GlassASTM C 1048(2004) Standard Specification for Heat-Treated Flat Glass - Kind HS, Kind FT Coated and Uncoated GlassASTM C 1172(2003) Standard Specification for Laminated Architectural Flat GlassASTM C 1184(2005) Standard Specification for Structural Silicone SealantsASTM C 509(2006) Elastomeric Cellular Preformed Gasket and Sealing MaterialASTM C 669(2000) Glazing Compounds for Back Bedding and Face Glazing of Metal SashASTM C 864(2005) Dense Elastomeric Compression Seal Gaskets, Setting Blocks, and SpacersASTM C 920(2008) Standard Specification for Elastomeric Joint SealantsASTM D 2287(1996; R 2001) Nonrigid Vinyl Chloride Polymer and Copolymer Molding and Extrusion CompoundsASTM D 395(2003; R 2008) Standard Test Methods for Rubber Property - Compression SetASTM D 4802(2002) Poly(Methyl Methacrylate) Acrylic Plastic SheetASTM D 673(1993ae1) Mar Resistance of PlasticsASTM E 119(2008a) Standard Test Methods for Fire Tests of Building Construction and MaterialsASTM E 1300(2007e1) Determining Load Resistance of Glass in BuildingsASTM E 2010(2001) Positive Pressure Fire Tests of Window AssembliesASTM E 2129(2005) Standard Practice for Data Collection for Sustainability Assessment of Building ProductsASTM E 413(2004) Rating Sound InsulationASTM E 773(2001) Accelerated Weathering of Sealed Insulating Glass UnitsASTM E 774(1997) Classification of the Durability of Sealed Insulating Glass UnitsASTM E 90(2004) Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements][GLASS ASSOCIATION OF NORTH AMERICA (GANA)GANA Glazing Manual(2004) Glazing ManualGANA Sealant Manual(1990) Sealant ManualGANA Standards Manual(2001) Tempering Division's Engineering Standards Manual][INSULATING GLASS MANUFACTURERS ALLIANCE (IGMA)IGMA TB-3001(1990) Guidelines for Sloped GlazingIGMA TM-3000(1997) Glazing Guidelines for Sealed Insulating Glass UnitsIGMA TR-1200(1983) Commercial Insulating Glass Dimensional Tolerances][NATIONAL FENESTRATION RATING COUNCIL (NFRC)NFRC 100(2004) Procedure for Determining Fenestration Product U-FactorsNFRC 200(2004) Procedure for Determining Fenestration Product Solar Heat Gain Coefficient and Visible Transmittance at Normal Incidence][NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)NFPA 252(2007) Standard Methods of Fire Tests of Door AssembliesNFPA 257(2006) Fire Test for Window and Glass Block AssembliesNFPA 80(2006; Errata 2008) Standard for Fire Doors and Other Opening Protectives][U.S. ENVIRONMENTAL PROTECTION AGENCY (EPA)Energy Star(1992; R 2006) Energy Star Energy Efficiency Labeling System][U.S. GENERAL SERVICES ADMINISTRATION (GSA)CID A-A-378(Basic; Notice 1) Putty Linseed Oil Type, (for Wood-Sash-Glazing][U.S. GREEN BUILDING COUNCIL (USGBC)LEED(2002; R 2005) Leadership in Energy and Environmental Design(tm) Green Building Rating System for New Construction (LEED-NC)][U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)16 CFR 1201Safety Standard for Architectural Glazing Materials][UNDERWRITERS LABORATORIES (UL)UL 752(2005; Rev thru Dec 2006) Bullet-Resisting EquipmentUL MEAPD(2003) Mechanical Equipment and Associated Products Directory]1.2 SUBMITTALS
NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL
PROCEDURES and edit the following list to reflect only the submittals required
for the project. Submittals should be kept to the minimum required for adequate
quality control.
A “G” following a submittal item indicates that the submittal requires Government
approval. Some submittals are already marked with a “G”. Only delete an existing
“G” if the submittal item is not complex and can be reviewed through the Contractor’s
Quality Control system. Only add a “G” if the submittal is sufficiently important
or complex in context of the project.
For submittals requiring Government approval on Army projects, a code of up
to three characters within the submittal tags may be used following the "G"
designation to indicate the approving authority. Codes for Army projects using
the Resident Management System (RMS) are: "AE" for Architect-Engineer; "DO"
for District Office (Engineering Division or other organization in the District
Office); "AO" for Area Office; "RO" for Resident Office; and "PO" for Project
Office. Codes following the "G" typically are not used for Navy, Air Force,
and NASA projects.
Choose the first bracketed item for Navy, Air Force and NASA projects, or choose
the second bracketed item for Army projects.
Government approval is required for submittals with a "G" designation; submittals not having a "G" designation
are [for Contractor Quality Control approval.][for information only. When used, a designation following the
"G" designation identifies the office that will review the submittal for the Government.] The following shall
be submitted in accordance with Section 01 33 00 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.
[Control Tower Insulating Glass]
[Control Tower Laminated Glass]
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.
NOTE: Regarding the use of SD-03 Product Data and SD-07 Certificates, only
use one of these on complicated and large products. It is preferred to use
SD-03 Product Data. If control tower glazing data is only available by certificates,
use SD-07 Certificates.
[SD-03 Product Data
Insulating Glass
Documentation for Energy Star qualifications.
Plastic Glazing
Glazing Accessories
Manufacturer's descriptive product data, handling and storage recommendations, installation
instructions, and cleaning instructions.
[Local/Regional Materials; (LEED)
Documentation indicating distance between manufacturing facility and the project site. Indicate
distance of raw material origin from the project site. Indicate relative dollar value of local/regional
materials to total dollar value of products included in project.]
[Environmental Data]]
SD-04 Samples
Insulating Glass
Plastic Sheet
Glazing Compound
Glazing Tape
Sealant
Two 203 x 254 mm 8 x 10 inch samples of each of the following: tinted glass, patterned glass,
heat-absorbing glass, [_____] and insulating glass units.
Three samples of each indicated material. Samples of plastic sheets shall be minimum 125
by 175 mm 5 by 7 inches.
[SD-07 Certificates
Insulating Glass
Plastic Glazing
Certificates stating that the glass meets the specified requirements. Labels or manufacturers
marking affixed to the glass will be accepted in lieu of certificates.
[Control Tower Insulating Glass]
[Control Tower Laminated Glass]
Glazing Accessories
Certificates from the manufacturer attesting that the units meet the luminous and solar radiant
transmission requirements for heat absorbing glass.]
SD-08 Manufacturer's Instructions
Setting and sealing materials
Glass setting
Submit glass manufacturer's recommendations for setting and sealing materials and for installation
of each type of glazing material specified.[ Include cleaning instructions for plastic sheets.]
SD-11 Closeout Submittals
Local/Regional Materials; LEED
LEED (tm) documentation relative to local/regional materials credit in accordance with LEED
Reference Guide. Include in LEED Documentation Notebook.
NOTE: Use the following paragraph on Army projects.
[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/snow loading in accordance with ASTM E 1300.
]1.4 DELIVERY, STORAGE, AND HANDLING
Deliver products to the site in unopened containers, labeled plainly with manufacturers' names and brands. Store
glass and setting materials in safe, enclosed dry locations and do not unpack until needed for installation.
Handle and install materials in a manner that will protect them from damage.
1.5 ENVIRONMENTAL REQUIREMENTS
Do not start glazing work until the outdoor temperature is above 4 degrees C40 degrees F and rising, unless procedures
recommended by the glass manufacturer and approved by the Contracting Officer are made to warm the glass and
rabbet surfaces. Provide ventilation to prevent condensation of moisture on glazing work during installation.
Do not perform glazing work during damp or rainy weather.
1.6 SUSTAINABLE DESIGN REQUIREMENTS
1.6.1 Local/Regional Materials
NOTE: Using local materials can help minimize transportation impacts, including
fossil fuel consumption, air pollution, and labor. Using materials harvested
and manufactured within a 500 mile radius from the project site contributes
to the following LEED credit: MR5. Coordinate with Section 01 33 29 LEED(tm)
DOCUMENTATION. Use second option if Contractor is choosing local products in
accordance with Section 01 33 29 LEED(tm) DOCUMENTATION. First option shall
not be used for USACE projects. Army projects shall include second option only
if pursuing this LEED credit.
[Use materials or products extracted, harvested, or recovered, as well as manufactured, within a [500][_____]
mile [800][_____] kilometer radius from the project site, if available from a minimum of three sources.][See
Section 01 33 29 LEED(tm) DOCUMENTATION for cumulative total local material requirements. Glazing materials
may be locally available.]
1.6.2 Environmental Data
NOTE: ASTM E 2129 provides for detailed documentation of the sustainability
aspects of products used in the project. This level of detail may be useful
to the Contractor, Government, building occupants, or the public in assessing
the sustainability of these products.
[Submit Table 1 of ASTM E 2129 for the following products: [_____].]
1.7 WARRANTY
NOTE: The warranty clauses in this guide specification have been approved by
a Level I Contracting Officer, and may be used without further approval or request
for waiver.
NOTE: Delete inapplicable paragraph[s].
1.7.1 Warranty for Insulating Glass Units
NOTE: For Air Force installations, select 10 years for the guarantee period
for control tower units.
Warranty insulating glass units against development of material obstruction to vision (such as dust, fogging,
or film formation on the inner glass surfaces) caused by failure of the hermetic seal, other than through glass
breakage, for a 10-year period following acceptance of the work. Provide new units for any units failing to
comply with terms of this warranty within 45 working days after receipt of notice from the Government. [For
control tower units, the warranty period shall be [10][_____] years; warranty shall be signed by the manufacturer.]
1.7.2 Warranty for Polycarbonate Sheet
For a 5-year period following acceptance of the work:
a. Warranty Type I, Class A (UV stabilized) sheets against breakage;
b. Warranty Type III (coated, mar-resistant) sheets against breakage and against coating delamination;
c. Warranty Type IV (coated sheet) against breakage and against yellowing;
d. Warranty extruded polycarbonate profile sheet against breakage.
For a 10-year period following acceptance of the work, warranty Type IV against yellowing and loss of light transmission.
[1.7.3 Monolithic Reflective Glass
Manufacturer shall warrant the monolithic reflective glass to be free of peeling or deteriorating of coating
for a period of 10 years after Date of Substantial Completion. Warranty shall be signed by manufacturer.
][1.7.4 Monolithic Opacified Spandrel
Manufacturer shall warrant the opacifier film on the spandrel to be free of peeling for a period of five years
after Date of Substantial Completion. Warranty shall be signed by manufacturer.
]PART 2 PRODUCTS
2.1 GLASS
NOTE: Glazed openings subject to accidental human impact shall be glazed with
safety glazing material in accordance with Consumer Products Safety Commission
(CPSC) Standard, 16 CFR Part 1201, Safety Standard for Architectural Glazing
Materials. Consult applicable building codes for detail requirements.
ASTM C 1036, unless specified otherwise. In doors and sidelights, provide safety glazing material conforming
to 16 CFR 1201.
2.1.1 Clear Glass
NOTE: Glass areas and thicknesses are based on 1.20 kilopascals 25 pounds per
square foot (psf) design wind load and vertical glazing with annealed glass.
For other glass and for wind loads greater than 1.20 kPa 25 psf, thickness will
depend upon aspect ratio (length divided by width), area, and design wind load.
The thickness and area limitations for each type of glass must be indicated
or specified. Do not specify glass less than 3.0 mm 1/8 inch.
Method of Determination for Minimum Glass Thickness:
Refer to UFC 4-010-01 "Department of Defense Minimum Antiterrorism Standards
for Buildings", ASTM E 1300, ASTM F 1642 and ASTM F 2248.
1. Determine peak gust wind speed and corresponding design wind loads, considering
location, height, shape, and orientation, in accordance with ASCE 7 "Minimum
Design Loads for Buildings and Other Structures", latest edition.
2. Determine aspect ratio, area, and type of glass for each opening to be glazed.
3. Select thickness required from glass manufacturer's chart for each type
of glass.
NOTE: Use the following data on Army projects
a. Category I Products: Doors and glazed panels that contain single piece
of glazing material no greater than 0.84 m2 9 ft2 in area. The product must
be capable of withstanding 203 Nm 150 foot pound impact load test.
b. Category II Products: Doors and glazed panels that contain any single piece
of glazing material greater than 0.84 m2 9 ft2 in area. The product must be
capable of withstanding a 542 Nm 400-foot-pound impact load test. Category
II products may be used in both Category I and Category II situations.
c. Doors: 16 CFR 1201 applies to all types of interior doors and exterior
doors, including storm doors and combination doors. FIRE/SAFETY RATED GLASS:
Is not required for openings in doors through which a 76 mm (3 inch) diameter
sphere is unable to pass. Glazing for fire doors shall be in accordance with
NFPA 80, even though this may be at variance with requirements of 16 CFR 1201.
d. Glazed Panels: 16 CFR 1201 no longer applies to exterior and interior glazed
panels. FIRE/SAFETY RATED GLASS: Glazed panels shall conform to ANSI Z97.1,
SAFETY PERFORMANCE SPECIFICATION AND METHODS OF TEST FOR SAFETY GLAZING MATERIALS
USED IN BUILDINGS. Since glazed panels may be hazardous, safety glazing should
be generally provided as described below:
FIRE/SAFETY RATED GLASS
(1) Glazed panels of any size located adjacent to a doorway, with the nearest
vertical edge of panel within 1219 mm (48 inches) of doorway, and with bottom
edge of panel below top of door. Safety glazing is not required for panels
separated from the doorway by an intervening interior permanent wall.
(2) Glazed panels with a surface area greater than 0.84 m2 (9 ft2) where there
is a walking surface on either side of panel, and the walking surface is within
914 mm (36 inches) of the panel. Safety glazing is not required if the lowest
edge of the glazing material is 457 mm (18 inches) or more above both walking
surfaces, or if the panels have a horizontal member, such as a mullion or permanent
railing not less than 38 mm (1-1/2 inches) in width, capable of withstanding
a horizontal load of 75 kg/m (50 plf), on the accessible sides of the glazing
and located between 609 mm and 914 mm (24 and 36 inches) above the walking surface.
(3) Where insulating glass units are used in locations requiring safety glazing,
both panes shall be safety glass.
(4) For exterior applications, safety glazing must also meet the wind and snow
load requirements in accordance with ASTM E 1300.
(5) In general, any glazed area subject to human impact should be provided
with safety glazing or other acceptable protective devices such as handrails
or horizontal mullions.
ASTM C 1036 covers the quality requirements for clear annealed glass, transparent
tinted heat-absorbing and light-reducing glass, patterned and wired glass with
a series of classification designations such as Types, Classes, Styles, Forms,
Qualities, Finishes, and Intended Uses, as defined below:
1. Type designations are: Type 1 - Transparent Flat Glass; Type II - Patterned
and Wired Glass.
2. Class designations are: Class 1-clear; Class 2-tinted Heat-Absorbing and
Light-Reducing; Class 3-tinted, light-reducing.
3. Style designations are: Style A - Higher light transmittance; Style B -
Lower light transmittance.
4. Form designations are: Form 1 - Wired polished both sides; Form 2 - Patterned
and wired, Form 3 - Patterned.
5. Quality designations including intended uses for ASTM C 1036 transparent
flat glass are:
a) Quality q1 - Mirror Select Quality: Coated for premium mirrors.
c) Quality q3 - Glazing Select: For architectural fenestrations or other applications
where distant objects are viewed through the glass by the observer.
d) Quality q4 - Intended for greenhouses or other applications where restrictions
on aesthetic conditions are not required.
e) Quality q5 - Intended for general glazing applications that have lesser
aesthetic demands than q3 or q4 quality grade.
f) Quality q6 - Intended for greenhouses or other applications where restrictions
on aesthetic conditions are not required.
6. Quality designations and intended uses for Patterned and Wired Flat Glasses:
a) Quality q7 - Decorative: For use where design and aesthetic characteristics
are major considerations.
b) Quality q8 - Glazing: For general glazing where functional or aesthetic
characteristics are a consideration and where surface blemishes are not a major
concern.
c) Wired Glass: For skylights and general glazing where fire retardation or
glass retention in a frame are a consideration.
NOTE: It is critical that skylights be maintainable. Designer must include
skylight access devices as a part of the design package where skylights are
large or at great heights above floor.
NOTE: Use the following bracketed statement for Army projects only.
[For interior glazing (i.e., pass and observation windows), 6 mm 1/4 inch thick glass should be used.]
Type I, Class 1 (clear), Quality [q4 (A)] [q5 (B)]. Provide for glazing openings not indicated or specified
otherwise. Use double-strength sheet glass or 3 mm 1/8 inch float glass for openings up to and including 1.39
square meters 15 square feet, 4.5 mm 3/16 inch for glazing openings over 1.39 square meters 15 square feet but
not over 2.79 square meters 30 square feet, and 6 mm 1/4 inch for glazing openings over 2.79 square meters 30
square feet but not over 4.18 square meters 45 square feet.
2.1.2 Annealed Glass
NOTE: Annealed glass is used for general glazing where clear or tinted glass
is required. Glass thickness shall be shown on drawings. Under some heavy
thermal conditions, tinted glass may require heat strengthening for thermal
endurance.
Annealed glass shall be Type I transparent flat type, Class 1 - [clear] [tinted], Quality q3 - glazing select,
[_____] percent light transmittance, [_____] percent shading coefficient, conforming to ASTM C 1036. Color shall
be [[gray] [bronze] [_____]].
2.1.3 Heat-Absorbing Glass
NOTE: For Use On Army Projects Only: Heat-absorbing and light-absorbing glass
may be used in accordance with TI 800-01, DESIGN CRITERIA. Tinted (light-reducing)
glass may be used where glare is a problem and a reduction of visible light
transmission is desired. Visible light transmittance will vary from 15 to 85
percent, depending on color density and thickness. Color density is a function
of thickness and increases as the thickness increases; visible light transmittance
will decrease as thickness increases. ASTM C 1036 separates Heat-Absorbing
and Tinted (light-reducing) glasses into categories, Higher light transmittance,
and Lower light transmittance, which is based on the maximum solar energy transmittance
by glass thickness.
Refer to ASTM C 1036 for evaluation quality requirements and glass manufacturer's
data for color selection, light transmittance and shading coefficient. When
specifying performance and color, the available ranges of performance and colors
should be specified for glazing units to allow several manufacturers to bid.
When matching existing glass, provide existing manufacturer's name, color and
acceptable range for shading factor, light transmittance, indoor and outdoor
reflectance.
Heat-absorbing and light-reducing glass is affected by thermal stresses which
can result in breakage. Care should be taken to make sure that the glass units
will not be thermally overburdened. Glass that will be thermally overburdened
should be Heat-Strengthened or, if safety glazing is required, Fully Tempered
to resist thermal breakage. Refer to ASTM C 1048 for quality evaluation and
refer to manufacturer's data for performance and color selection.
Factors which increase the risk of breakage include building orientation, unusual
shapes of lites, large lites, indoor shading devices, heating registers, and
outdoor shading by trees, structure or exterior shading devices.
NOTE: NOTE for Navy Projects: Consult manufacturer's literature for colors,
thicknesses, and transmittance values available. Coordinate with safety glazing
requirements and paragraph entitled "Tempered Glass."
Type I, Class 2 (heat absorbing and light reducing), Quality [q3 (select)] [q4 (A)], [_____] mm inch thick, [blue][green]
in color, [_____] percent light transmittance, [_____] percent shading coefficient, conforming to ASTM C 1036
. Color shall be [[gray] [bronze] [_____]] for 6 mm 1/4 inch thickness.
2.1.4 Wired Glass
NOTE: Wired glass is no longer produced in the United States. On 17 March
1992 (effective for a five year period) OSD determined that the Buy America
Act does not apply to the procurement of wired glass and added the product to
the list of excepted materials under FAR 25.108(d)(1). Accordingly, wired
glass furnished in compliance with Section 08800, "Glazing," does not violate
the Buy America Act.
Types of wired glass available are polished, patterned, and tinted/heat-absorbing
wired glass. Wired glass cannot be tempered. Wired Glass does not meet the
requirements of 16 CFR 1201 and cannot be used as safety glazing materials in
situations governed by that regulation.
Typically 6 mm (1/4 inch) thick wired glass is used for fire-rated windows and
doors where required by building codes and other fire-protection criteria.
Only wired glass in Mesh 1 - Diamond and Mesh 2 - Square are acceptable for
fire rated door and window openings. Mesh 3 - Parallel is not acceptable for
fire rated openings.
Wired glass, because of the wire mesh and edge damage from cutting, is very
susceptible to thermal breakage. Heat absorbing wired glass increases the tendency
for breakage. Wired glass is also susceptible to edge breakage from water penetrating
the capillary in which the wires reside. The glazing system should insure that
the edges are kept dry by sealing the edges with silicone.
Glass for fire-rated windows shall be UL listed and shall be rated for [45] [20] minutes when tested in accordance
with ASTM E 2010. Wired glass shall be Type II flat type, Class [1 - translucent] [2 - tinted, heat-absorbing]
[3 - tinted, light-reducing], Quality [q7 - decorative] [q8 - glazing], Form [1 - wired and polished both sides]
[2 - patterned and wired], [_____] percent light transmittance, [_____] percent shading coefficient, conforming
to ASTM C 1036. Wire mesh shall be polished stainless steel Mesh [1 - diamond] [2 - square] [3 - parallel].
Wired glass for fire-rated windows shall bear an identifying UL label or the label of a nationally recognized
testing agency, and shall be rated for [20] [45] minutes when tested in accordance with NFPA 257. Wired glass
for fire-rated doors shall be tested as part of a door assembly in accordance with NFPA 252.
2.1.5 Patterned Glass
NOTE: Patterned glass is normally provided for windows of toilet rooms, vertical
sliding sash in post offices borrowed light sash at entrances, etc. Patterned
glass is available in various thicknesses, with a pattern embossed on one or
both sides. This glass is frequently called "figured", "obscure", or "decorative"
glass. The degree of diffusion achieved is a function of the pattern and whether
the pattern is on one or both sides. Some patterned glass cannot be heat-strengthened
or tempered because of the pattern depth. Pattern glass does not offer complete
obscurity and must be used with caution in very private areas such as toilets.
The appropriate pattern designation should be selected from ASTM C 1036. If
a more specific pattern designation is desired, a manufacturer's name and pattern
may be specified. When specific manufacturer's names and patterns are specified,
the designer should add the following note to the spec: "Manufacturer's name
and patterns indicated are for identification purposes only; the listing is
not intended to limit selection of similar patterns from other manufacturers."
Refer to GANA GLAZING MANUAL, and glass manufacturer's performance tables for
proper evaluation of patterned glass thickness and size of opening to be glazed.
Patterned glass 3 mm 1/8 inch thick should not be larger than 2.15 square meters
6 square feet.
Type II, Class 1 (translucent), Form 3 (patterned), Quality q7 (decorative), Finish [f1 (patterned one side)]
[f2 (patterned two sides)], Pattern [p1 (linear)] [p2 (geometric)] [p3 (random)] [p4 (special)], [[_____] percent
light transmittance, [_____] percent shading coefficient.] [3] [6] mm [1/8] [7/32] inch thick. [Provide [_____].]
2.1.6 Laminated Glass
NOTE: For Antiterrorism/force protection (ATFP) criteria, refer to UFC 4-010-01
"Department of Defense Minimum Antiterrorism Standards for Buildings." Laminated
annealed flat glass shall be provided at exterior window and door glazing.
When force protection minimum measures are required, use the first bracketed
option below.
[ASTM C 1172, Kind LA fabricated from two nominal [3][__] mm [1/8][__] inch pieces of Type I, Class 1, Quality
q3, flat annealed transparent glass conforming to ASTM C 1036. Flat glass shall be laminated together with a
minimum of 0.75 mm 0.030 inch thick, clear polyvinyl butyral interlayer. The total thickness shall be nominally
6[__] mm1/4[__] inch.] [Fabricated from two pieces of Type I, Class 1, Quality q3 glass laminated together with
a clear [_____] [0.38] mm [0.015] inch thick polyvinyl butyral interlayer or alternatives such as resin laminates,
conforming to requirements of 16 CFR 1201 and ASTM C 1172. Color shall be [[clear] [gray] [bronze] [_____]]
. The total thickness shall be nominally [_____] mm inch. [Provide [_____].]]
2.1.7 Bullet-Resisting Glass
NOTE: Bullet-resisting glazing material is available in four power ratings
to resist scattered shots from (1) medium-power small arms (MSA); (2) high-power
small arms (HSA); (3) super-power small arms (SSA); and (4) high-power rifles
(HR). Bullet-resisting glass is available in thicknesses of 30.2, 38.1, 44.5,
and 50.8 mm 1 3/16, 1 1/2, 1 3/4, and 2 inches to meet those power ratings.
Fabricated from Type I, Class 1, Quality q3 glass with polyvinyl butyral plastic interlayers between the layers
of glass and listed by UL MEAPD as bullet resisting, with a power rating of [Medium--Small Arms] [High--Small
Arms] [Super--Small Arms] [High--Rifle] in accordance with UL 752. Provide [______] [where indicated].
[2.1.8 Mirrors
NOTE: For Army projects only. Navy projects will specify mirrors in Division
10, Specialties. Select the frames (J-Mold channels) or clips to secure mirror
to wall. Mastic is required with each type of installation. Mirror sizes will
be shown on the drawings. Coordinate with Section 05500 MISCELLANEOUS METAL
and Section 10800 TOILET ACCESSORIES to ensure that frames are specified for
these mirrors.
One-way vision glass should be used for psychiatric and security observation
windows. Where safety glazing is required, specify either laminated glass or
tempered glass.
2.1.8.1 Glass Mirrors
Glass for mirrors shall be Type I transparent flat type, Class 1-clear, Glazing Quality q1 6 mm (1/4 inch) 1/4
inch thick conforming to ASTM C 1036. Glass shall be coated on one surface with silver coating, copper protective
coating, and mirror backing paint. Silver coating shall be highly adhesive pure silver coating of a thickness
which shall provide reflectivity of 83 percent or more of incident light when viewed through 6 mm (1/4 inch)1/4
inch thick glass, and shall be free of pinholes or other defects. Copper protective coating shall be pure bright
reflective copper, homogeneous without sludge, pinholes or other defects, and shall be of proper thickness to
prevent "adhesion pull" by mirror backing paint. Mirror backing paint shall consist of two coats of special
scratch and abrasion-resistant paint , and shall be baked in uniform thickness to provide a protection for silver
and copper coatings which will permit normal cutting and edge fabrication.
]2.1.9 One-Way Vision Glass (Transparent Mirrors)
Type I, Class 1, Quality q1, 6 mm 1/4 inch thick, coated on one face with a hard, adherent film of chromium or
other approved coating of equal durability. Glass shall transmit not less than 5 percent or more than 11 percent
of total incident visible light and shall reflect from the front surface of the coating not less than 45 percent
of the total incident visible light. [Provide [_____].]
2.1.10 Tempered Glass
NOTE: Tempered glass is the preferred material for areas requiring safety glazing
materials. Laminated glass, organic-coated glass, wire glass, and plastic sheet
are permitted if they conform to the requirements of the CPSC 16 CFR Part 1201.
ASTM C 1048, Kind FT (fully tempered), Condition A (uncoated), Type I, Class [1 (transparent)] [2 (tinted heat
absorbing)], Quality q3, [_____] mm inch thick, [_____] percent light transmittance, [_____] percent shading
coefficient conforming to ASTM C 1048 and GANA Standards Manual. Color shall be [[clear] [bronze] [gray] [_____]].
[Provide [_____]] [and wherever safety glazing material is indicated or specified].
2.1.11 Heat-Strengthened Glass
ASTM C 1048, Kind HS (heat strengthened), Condition A (uncoated), Type I, Class [1 (clear)] [2 (tinted heat absorbing)],
Quality q3, [_____] mm inch thick. [Provide [_____].]
2.1.12 Spandrel Glass
2.1.12.1 Ceramic-Opacified Spandrel Glass
Ceramic-opacified spandrel glass shall be Kind HS heat-strengthened transparent flat type, Condition B, coated
with a colored ceramic material on No. 2 surface, Quality q3 - glazing select, [_____] mm [_____] inch thick,
conforming to ASTM C 1048. Glass performance shall be K-Value/Winter Nighttime [_____], R-Value/Winter Nighttime
[_____], shading coefficient [_____]. Color shall be [_____].
2.1.12.2 Film-Opacified Spandrel Glass
Film-opacified spandrel glass shall be Kind HS heat-strengthened transparent flat type, Quality q3 - glazing
select, Condition C glass with a polyester or polyethylene film 0.025 mm to 0.127 mm 2 mils to 5 mils thick attached
to No. 2 surface of a sputtered solar-reflective film, conforming to ASTM C 1048. Film opacification shall be
compatible to and specifically developed for application to solar reflective films. Glass performance shall
be K-Value/Winter Nighttime [_____], R-Value/Winter Nighttime [_____], shading coefficient [_____]. Color shall
be [_____].
2.1.12.3 Spandrel Glass With Adhered Backing
NOTE: Spandrel glass with adhered backing is required wherever glass spandrels
are located above sidewalks, pedestrian or vehicular ramps, paved plazas, entrances
not covered by a protective canopy, and other locations where glass could fall
onto an area used by the public.
ASTM C 1048, Kind HS or FT, Condition B (ceramic coated), Type I, Quality q5, [_____] mm inch thick and shall
pass the fallout resistance test specified in ASTM C 1048. [Provide [_____].]
2.1.13 Fire/Safety Rated Glass
Fire/safety rated glass shall be laminated Type I transparent flat type, Class 1-clear. Glass shall have a [20]
[45] [60] [_____] minute rating when tested in accordance with ASTM E 119. Glass shall be permanently labeled
with appropriate markings.
2.1.14 Tinted (Light-Reducing) Glass
NOTE: Reference to Section 09 06 90, "Color Schedule" is intended for use on
Army projects only.
Tinted (light-reducing) glass shall be Type I transparent flat type, Class 3-tinted, Quality q3 - glazing select,
[_____] percent light transmittance, [_____] percent shading coefficient, conforming to ASTM C 1036. [Color
shall be [[gray] [bronze] [_____]] [as shown in Section 09 06 90 COLOR SCHEDULE].]
2.2 INSULATING GLASS UNITS
NOTE: Where safety glazing is required, both lights of insulating units must
be safety glass, and each light must have a permanent label.
NOTE: Window properties are critical to energy performance and visual satisfaction.
Specify low U value (rate of heat transfer) to reduce winter heat loss and summer
heat gain. Windows on the west and east sides experience maximum solar gain
in summer and should have a low SHGC (how much heat the building gains from
the sun). Low SHGC is achieved with selective glass, tinted glass, or reflective
coating. Specify selective glass for clear appearance or when high visible
transmittance is required for daylighting goals. In the Northern Hemisphere,
south side glass may be protected from summer sun by an overhang and have a
high SHGC if winter heat is useful. Specify a low SHGC for south-side glass
if the building is dominated by internal heat gain and solar heat is unwelcome
even in winter. North side receives very little sun and requires no special
treatment.
In southern states, windows shall have a U factor of 0.75 Btu/square foot x
hr x degree F or lower and a SHGC of 0.40 or lower; in the middle states, windows
shall have a U factor of 0.40 Btu/square foot x hr x degree F or lower and SHGC
of 0.55 or lower; and in northern states, windows shall have a U factor of 0.35
Btu/square foot x hr x degree F or lower with any SHGC. Consider glazing with
aerogel insulation between 2 panels of glass, producing the highest visual transmittance
with the highest insulation values currently available.
Installing energy efficient windows contributes to the following LEED credits:
EA Prerequisite 2; EA1.
NOTE: STC levels higher than 35 may require costly design modifications and
special glazing. STC addresses construction subject to interior sound frequencies
and does not include all typical outdoor frequencies; Outside-Inside Transmission
Class (OITC) was developed to evaluate an expanded sound-frequency range generally
considered to be more reflective of exterior noise conditions imposed on the
building envelope such as road, rail, and airplane traffic.
Two panes of glass separated by [a dehydrated [1/2 inch13 mm airspace, filled with argon][3/8 inch10 mm airspace,
filled with krypton] gas,][[16][32][_____] mm[0.63][1.26][_____] inches of aerogel] and hermetically sealed.
Glazed systems (including frames) shall be Energy Star labeled products as appropriate to climate zone and as
applicable to window type, with a whole-window Solar Heat Gain Coefficient (SHGC) maximum of [_____] determined
according to NFRC 200 procedures. Glazed panels and curtain walls shall have a U-factor maximum of [_____] Btu
per square foot x hr x degree FW per square m x K in accordance with NFRC 100. Glazing shall meet or exceed
a luminous efficacy of 1.0. Glazed panels shall be rated for not less than [26] [30] [35] [_____] Sound Transmission
Class (STC) when tested for laboratory sound transmission loss according to ASTM E 90 and determined by ASTM E 413
. Dimensional tolerances shall be as specified in IGMA TR-1200. The units shall meet CBA Grade requirement when
tested in accordance with ASTM E 773 and ASTM E 774, Class A. Spacer shall be black, roll-formed, [thin-gauge,
C-section steel] [steel-reinforced butyl rubber] [thermally broken aluminum] [polyurethane and silicon foams],
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.
Two panes of glass separated by a dehydrated airspace and hermetically sealed. Dimensional tolerances shall
be as specified in IGMA TR-1200. The units shall conform to ASTM E 773 and ASTM E 774, Class A. 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.
2.2.1 Buildings
NOTE: When antiterrorism/force protection requirements apply, specify laminated
annealed flat glass for interior light. Use the bracketed option regarding
ASTM C 1172 in the paragraph below.
NOTE: Where safety glazing is required, both lights of insulating units must
be safety glass, and each light must have a permanent label.
NOTE: U value (rate of heat transfer) and SHGC (how much heat the building
gains from the sun) are determined on a whole-opening basis (glazing and frame).
Specify U value and SHGC in the appropriate exterior opening (window, door,
curtain wall) sections and coordinate insulated glass description with energy
performance requirements specified in those sections. Include bracketed U value
and SHGC requirements here only if not specified elsewhere as a whole-opening
rating for frame and glass. Determine appropriate values by consulting ASHRAE
90.1.
Window properties are critical to energy performance and visual satisfaction.
Low SHGC is achieved with selective glass, tinted glass, or reflective coating.
Specify selective glass for clear appearance or when high visible transmittance
is required for daylighting goals. In the Northern Hemisphere, south side
glass may be protected from summer sun by an overhang and have a high SHGC
if winter heat is useful. Specify a low SHGC for south-side glass if the building
is dominated by internal heat gain and solar heat is unwelcome even in winter.
North side receives very little sun and requires no special treatment.
Consider glazing with aerogel insulation between 2 panels of glass, producing
the highest visual transmittance with the highest insulation values currently
available. Verify availability and cost before specifying aerogel.
Installing energy efficient windows contributes to the following LEED credits:
EA Prerequisite 2; EA1.
Designer must verify availability and adequate competition for products energy
performance requirements before specifying and edit as needed.
NOTE: STC levels higher than 35 may require costly design modifications and
special glazing. STC addresses construction subject to interior sound frequencies
and does not include all typical outdoor frequencies; Outside-Inside Transmission
Class (OITC) was developed to evaluate an expanded sound-frequency range generally
considered to be more reflective of exterior noise conditions imposed on the
building envelope such as road, rail, and airplane traffic.
Two panes of glass separated by a dehydrated airspace[, filled with argon gas][, filled with krypton gas,][,
filled with aerogel] and hermetically sealed.
[Insulated glass units shall have a Solar Heat Gain Coefficient (SHGC) maximum of [_____]and a U-factor maximum
of [_____] Btu per square foot x hr x degree F W per square m x K.]
[Glazing shall meet or exceed a luminous efficacy of 1.0.] [See section[s][ ] for energy performance requirements
for glazed systems (glazing and frames).] [Glazed panels shall be rated for not less than [26] [30] [35] [_____]
Sound Transmission Class (STC) when tested for laboratory sound transmission loss according to ASTM E 90 and
determined by
ASTM E 413.]
Dimensional tolerances shall be as specified in IGMA TR-1200. The units shall conform to meet CBA Grade requirement
when tested in accordance with
ASTM E 773 and ASTM E 774, Class A. Spacer shall be black, roll-formed,
[thin-gauge, C-section steel] [steel-reinforced butyl rubber] [thermally broken aluminum] [polyurethane and
silicon foams], 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.
The inner light shall be [ASTM C 1172, clear annealed flat glass Type I, Class I, Quality q3] [ASTM C 1036, Type
I, Class 1, Quality q4, [_____] mm inch thick] [ASTM C 1048, Grade B (fully tempered), Style I (uncoated), Type
I, Class 1 (transparent), Quality q4, [_____] mm inch thick]. The outer light shall be [ASTM C 1036, Type I,
Class [1 (transparent)] [2 (tinted heat absorbing)], [2 (solar-reflective)], Quality q4, [_____] mm inch thick]
[ASTM C 1048, Grade B (fully tempered), Style I (uncoated), Type I, Class [1 (clear)] [2 (tinted heat absorbing)][solar-reflective],
Quality q4, [_____] mm inch thick].
2.2.2 Control Towers
NOTE: For Air Force installations, do not modify these requirements without
approval of Headquarters, U.S. Air Force. Where design wind speed is more than
225 kilometers 140 miles per hour, delete the first and use the second bracketed
sentence. Coordinate term of warranty with paragraph entitled "Warranty."
NOTE: Requirements for control tower cab windows will be included in the project
specification for Air Force construction. The use of these requirements by
other agencies should be governed by agency criteria. Requirements for control
tower cab windows are for the sizes and details on the current standard Air
Force control tower drawings. Any modification from Air Force installations
will be made only with the approval of Headquarters, U.S. Air Force. Edit this
paragraph to include only the heat-absorbing insulating glass or the clear insulating
glass.
Wind load requirements must be determined by the designer and the blanks filled
in for each project.
If spare units are required for a particular project an "Extra Materials" paragraph
must be developed for PART 1 which identifies the items, states quantities,
and indicates to whom, when and where to be delivered.
For overseas work the following subparagraph will also be added:
1. When units other than United States manufacturer are proposed for use, the
manufacturer shall prove successful use of the insulating window units in aircraft
control tower cabs.
Control tower glass units shall be of sizes required to properly fit aluminum frames. Tolerances and clearances
for units shall be designed to prevent the transfer of stress in aluminum frames to the glass. Resilient setting
blocks, spacer strips, clips, bolts, washers, angles, glazing sealants, and resilient channels or cemented-on-materials
shall be of the type recommended in the glass manufacturer's approved written instructions. Edges and corners
of units shall not be ground, nipped, cut, or fitted after leaving the factory.
NOTE: The insulated glass system should be used for clarity and insulation,
unless structural loadings dictate laminated glass be used. Navy/Marine Corps
Air Traffic Control Towers shall normally use laminated glass in hurricane prone
or high wind areas and for large panes of glass where it would be difficult
to maintain the 1/2 inch separation evenly in an insulated glass system. Refer
to UFC 4-133-01N for guidance.
2.2.2.1 Control Tower Insulating Glass
Insulating glass units for air traffic control towers shall meet the wind load design requirement of [_____]
kPa, [_____] psi, as determined in accordance with ASCE 7. Insulating glass shall be Class A preassembled units
of dual-seal construction consisting of two lites of glass separated by a dark bronze aluminum, steel, or stainless
steel, spacer with desiccant 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 to eliminate
moisture and hydrocarbon vapor transmission into airspace through corners. Primary seal shall be compressed
polyisobutylene. Secondary seal shall be silicone. Insulating glass units shall be fabricated for use at an
elevation of [_____] meters [_____] feet above mean sea level and [_____] meters[_____] feet above grade. Within
bottom 1/3 of one of the vertical edges of each unit, the manufacturer shall install an open 305 mm 12 inch long
capillary/breather tube for pressure equalization. The insulating glass units shall be free of parallax or optical
distortions. The manufacturer's identifying label shall be permanently affixed to both exterior surfaces of
the glass units. The insulating glass units shall be a total thickness of 26 mm (1 inch) 1 inch consisting of
two 6 mm (1/4 inch) 1/4 inch thick panels and air space, or a total thickness of 32 mm (1-1/4 inch) 1-1/4 inch
consisting of two 10 mm (3/8 inch) 3/8 inch thick panels and air space, or a total thickness of 38 mm (1-1/2
inch) 1-1/2 inch consisting of two 13 mm (1/2 inch) 1/2 inch thick panels and an air space, as required to meet
the wind loads indicated. Glass type shall be as follows.
2.2.2.2 Control Tower Heat-Absorbing Insulating Glass
NOTE: Coordinate with paragraph Heat Absorbing Glass.
Heat-absorbing insulating glass shall consist of two glass panels separated by an air space and shall conform
to ASTM C 1036, Type I, transparent flat glass, Style A, Quality q3 - glazing select. Interior glass shall be
Class 1-clear and exterior glass shall be Class 2-tinted green. Glass performance shall be minimum Visible Transmittance
of [70.8] [_____] percent for each panel and K-Value of 3.07 R-Value of 1.85 for the unit.
2.2.2.3 Control Tower Clear Insulating Glass
Clear insulating glass shall consist of two float glass panels separated by an air space and shall conform to
ASTM C 1036, Type I transparent flat glass, Quality q3-glazing select. Interior glass and exterior glass shall
be Class 1-clear. Glass performance shall be minimum Visible Transmittance of [87.3] [_____] percent for each
panel and K-Value of 3.07 R-Value of 1.85 for each unit.
2.2.2.4 Control Tower Laminated Glass
Laminated glass units for air traffic control towers shall meet the wind load design requirement of [_____] kPa,
[_____] psi, as determined in accordance with ASCE 7. ASTM C 1172, Kind LA fabricated from two nominal 12.5
mm 1/2 inch pieces of Type I, Class 1, Quality q3, flat annealed transparent glass conforming to ASTM C 1036.
Flat glass shall be laminated together with a minimum of 0.75 mm 0.030 inch thick, clear polyvinyl butyral interlayer
or alternatives such as resin laminates, conforming to requirements of 16 CFR 1201 and ASTM C 1172. The total
thickness shall be nominally 25 mm1 inch. Color shall be [[clear] [gray] [bronze] [_____]]. [Provide [_____].]
2.2.3 Low Emissivity Insulating Glass
NOTE: Low emissivity coating should be on the air space surface of the inner
pane of glass (the number 3 surface) in heating-dominated buildings, and on
the number 2 surface (inside surface of the exterior pane) in cooling-dominated
buildings.
Interior and exterior glass panes for Low-E insulating units shall be Type I annealed flat glass, Class [1-clear]
[2-tinted] with anti-reflective low-emissivity coating on [No. 2 surface (inside surface of exterior pane)][No.
3 surface (inside surface of interior pane)], Quality q3 - glazing select, conforming to ASTM C 1036. Glass
performance shall be K-Value/Winter Nighttime [_____] R-Value/Winter Nighttime [_____], shading coefficient [_____].
Color shall be [[green] [gray] [bronze] [blue] [_____]] [as shown in Section 09 06 90 COLOR SCHEDULE].
2.3 PLASTIC GLAZING
NOTE: Plastic glazing may be used in some areas where high resistance to breakage
is required, but combustibility must be considered in the design. See manufacturers'
literature for many types available. Do not specify plastic for glazing unprotected
openings, for roof panels, or for skylights without consulting UFC-3-600-01
and NAVFACENGCOM Code 04F.
NOTE: Polycarbonate is more expensive than acrylic and should only be selected
for locations which are highly vulnerable to vandalism or other types of abuse.
Avoid polycarbonate if possible due to potentially hazardous constituent chemicals
(including Bisphenol A). Where only one material is used in the project, the
other one should be deleted.
Where translucent plastic sheets are required, locations will be shown on the
contract drawings. The following will be added at the end of the paragraph:
"Translucent sheets, where shown, shall be white having light transmission of
[_____] percent for sheets [_____] mm inches thick, or clear with matt finish."
The light transmission required for a particular sheet thickness will be selected
from plastic sheet manufacturer's catalogs.
Acrylic-plastic is a combustible material and should not be used in areas where
exposure to fire would create a hazard condition.
Consider glazing with aerogel insulation between 2 panels of plastic, producing
the highest visual transmittance with the highest insulation values currently
available. Plastic glazing shall have a U-factor maximum of the specified U-factor
for insulating glass units. Verify availability and cost before specifying
aerogel.
Plastic glazing shall have a U-factor maximum of [_____] W per square m x KBtu per square foot x hr x degree
F. [Plastic glazing shall include a [16][32][_____] mm[0.63][1.26][_____] inch layer of aerogel between panels.]
2.3.1 Acrylic Sheet
ASTM D 4802, [Type I, regular] [Type II, heat resistant,] [clear and smooth on both sides] [translucent, textured
on both sides,] [gray tint,] [bronze tint,] ultraviolet stabilized, [scratch resistant,] [_____] [6] [_____]
mm ([0.236] [_____] in.) [0.236] [_____] in. thick.
2.3.2 Polycarbonate Sheet
ANSI Z97.1, [Clear and smooth both sides] [Translucent, textured both sides] [Gray tint] [Bronze tint] [mar-resistant]
[high abrasion resistant], ultraviolet stabilized, [_____] mm inch thick and listed in UL MEAPD as burglar resisting.
[Mar-resistant sheet shall have a change in haze of between 5 and 8 percent under silica carbide test, 1600 grams,
ASTM D 673.]
2.3.3 Extruded Polycarbonate Profiled Sheet
Provide [double] [triple] walled, surface treated for improved UV resistance, offering thermal efficiency and
impact strength.
2.3.4 Bullet-Resistant Plastic Sheet
NOTE: Bullet-resisting glazing material is available in four power ratings
to resist scattered shots from (1) medium-power small arms (MSA); (2) high-power
small arms (HSA); (3) super-power small arms (SSA); and (4) high-power rifles
(HR). Bullet-resisting acrylic sheet is listed by UL for MSA rating only and
is 25.4 mm one inch thick. Bullet-resisting polycarbonate sheet is listed
for MSA 25.4 mm one inch and for HSA and SSA ratings 31.8 mm 1 1/4 inch. Consult
manufacturers for exact thicknesses and availability.
Cast acrylic sheet or mar-resistant polycarbonate sheet laminated with a special interlayer, and listed in UL 752
as bullet resisting, Class [I] [II] [III], [clear] [_____] in color. [Provide [_____].]
2.4 SETTING AND SEALING MATERIALS
Provide as specified in the GANA Glazing Manual, IGMA TM-3000, IGMA TB-3001, and manufacturer's recommendations,
unless specified otherwise herein. Do not use metal sash putty, nonskinning compounds, nonresilient preformed
sealers, or impregnated preformed gaskets. Materials exposed to view and unpainted shall be gray or neutral
color.
2.4.1 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-378for face-glazing primed wood sash. Putty and glazing compounds shall not be used with insulating
glass or laminated glass.
2.4.2 Glazing Compound
ASTM C 669. Use for face glazing metal sash. Do not use with insulating glass units or laminated glass.
2.4.3 Sealants
Provide elastomeric [and structural] sealants.
2.4.3.1 Elastomeric Sealant
ASTM C 920, Type S, Grade NS, Class 12.5, Use G. Use for channel or stop glazing [wood] [and] [metal] sash.
Sealant shall be chemically compatible with setting blocks, edge blocks, and sealing tapes[, with sealants used
in manufacture of insulating glass units] [, and with plastic sheet]. Color of sealant shall be white.
2.4.3.2 Structural Sealant
ASTM C 1184, Type S.
2.4.4 Joint Backer
Joint backer shall have a diameter size at least 25 percent larger than joint width; type and material as recommended
in writing by glass and sealant manufacturer.
2.4.5 Preformed Channels
Neoprene, vinyl, or rubber, as recommended by the glass manufacturer for the particular condition. [Channels
for bullet-resistant glass shall be synthetic rubber, ASTM C 864, not less than 6 mm 1/4 inch thick and sufficiently
resilient to accommodate expansion and contraction while maintaining a vaportight seal between glass and frame.]
[Channels shall be chemically compatible with plastic sheet.]
2.4.6 Sealing Tapes
Preformed, semisolid, PVC-based material of proper size and compressibility for the particular condition, complying
with ASTM D 2287. Use only where glazing rabbet is designed for tape and tape is recommended by the glass or
sealant manufacturer. Provide spacer shims for use with compressible tapes. Tapes shall be chemically compatible
with the product being set.
2.4.7 Setting Blocks and Edge Blocks
Closed-cell neoprene setting blocks shall be dense extruded type conforming to ASTM C 509 and 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. Block color shall be black.
2.4.8 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. Glazing gasket profiles shall be as indicated on drawings.
2.4.8.1 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.
2.4.8.2 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.
2.4.8.3 Aluminum Framing Glazing Gaskets
Glazing gaskets for aluminum framing shall be permanent, elastic, non-shrinking, non-migrating, watertight and
weathertight.
2.4.9 Accessories
Provide as required for a complete installation, including glazing points, clips, shims, angles, beads, and spacer
strips. Provide noncorroding metal accessories. Provide primer-sealers and cleaners as recommended by the glass
and sealant manufacturers.
[2.5 MIRROR ACCESSORIES
NOTE: Use for Army projects only. Navy projects will specify Mirrors and Accessories
in Division 10, Specialties.
2.5.1 Mastic
Mastic for setting mirrors shall be a [polymer] [_____] type mirror mastic resistant to water, shock, cracking,
vibration and thermal expansion. Mastic shall be compatible with mirror backing paint, and shall be approved
by mirror manufacturer.
2.5.2 Mirror Frames
Mirrors shall be provided with mirror frames (J-mold channels) fabricated of one-piece roll-formed Type 304 stainless
steel with No. 4 brushed satin finish and concealed fasteners which will keep mirrors snug to wall. Frames shall
be 32 x 6 x 6 mm (1-1/4 x 1/4 x 1/4 inch) 1-1/4 x 1/4 x 1/4 inch continuous at top and bottom of mirrors. Concealed
fasteners of type to suit wall construction material shall be provided with mirror frames.
2.5.3 Mirror Clips
Concealed fasteners of type to suit wall construction material shall be provided with clips.
]PART 3 EXECUTION
3.1 PREPARATION
Preparation, unless otherwise specified or approved, shall conform to applicable recommendations in the GANA Glazing Manual
, GANA Sealant Manual, IGMA TB-3001, IGMA TM-3000, and manufacturer's recommendations. Determine the sizes
to provide the required edge clearances by measuring the actual opening to receive the glass. Grind smooth in
the shop glass edges that will be exposed in finish work. Leave labels in place until the installation is approved,
except remove applied labels on heat-absorbing glass and on insulating glass units as soon as glass is installed.
Securely fix movable items or keep in a closed and locked position until glazing compound has thoroughly set.
3.2 GLASS SETTING
Shop glaze or field glaze items to be glazed using glass of the quality and thickness specified or indicated.
Glazing, unless otherwise specified or approved, shall conform to applicable recommendations in the GANA Glazing Manual
, GANA Sealant Manual, IGMA TB-3001, IGMA TM-3000, and manufacturer's recommendations. Aluminum windows, wood
doors, and wood windows may be glazed in conformance with one of the glazing methods described in the standards
under which they are produced, except that face puttying with no bedding will not be permitted. Handle and install
glazing materials in accordance with manufacturer's instructions. Use beads or stops which are furnished with
items to be glazed to secure the glass in place. Verify products are properly installed, connected, and adjusted.
3.2.1 Sheet Glass
Cut and set with the visible lines or waves horizontal.
3.2.2 Patterned Glass
Set glass with one patterned surface with smooth surface on the weather side. When used for interior partitions,
place the patterned surface in same direction in all openings.
3.2.3 Insulating Glass Units
Do not grind, nip, or cut edges or corners of units after the units have left the factory. Springing, forcing,
or twisting of units during setting will not be permitted. Handle units so as not to strike frames or other
objects. Installation shall conform to applicable recommendations of IGMA TB-3001 and IGMA TM-3000.
3.2.4 Installation of Wire Glass
Install glass for fire doors in accordance with installation requirements of NFPA 80.
3.2.5 Installation of Heat-Absorbing Glass
Glass shall have clean-cut, factory-fabricated edges. Field cutting will not be permitted.
3.2.6 Installation of Laminated Glass
Sashes which are to receive laminated glass shall be weeped to the outside to allow water drainage into the channel.
3.2.7 Plastic Sheet
Conform to manufacturer's recommendations for edge clearance, type of sealant and tape, and method of installation.
3.3 ADDITIONAL REQUIREMENTS FOR GLAZING CONTROL TOWER WINDOWS
NOTE: For Air Force installations, do not modify these requirements without
approval of Headquarters, U.S. Air Force. Where design wind speed is more than
225 kilometers 140 miles per hour, delete the last sentence.
3.3.1 Materials and Methods of Installation
Comply with the manufacturer's warranty and written instructions, except as indicated. Install units with the
heat-absorbing glass to the exterior. Secure glass in place with bolts and spring clips. The minimum clearance
between bolts and edge of glass unit shall be 4.75 mm 3/16 inch. The glass shall be edged with 4.75 mm 3/16
inch thick continuous neoprene, vinyl, or other approved material. Trim edging after installation. The channel
shapes or strips shall be firmly held against the glass by the spring action of the extruded metal moldings.
Resilient setting blocks, spacer strips, clips, bolts, washers, angles, applicable glazing compound, and resilient
channels or cemented-on materials shall be as recommended in the written instructions of the glass manufacturer,
as approved.
3.3.2 Tolerances and Clearances of Units
Design to prevent the transfer of stress in the setting frames to the glass. Springing, twisting, or forcing
of units during setting will not be permitted.
3.4 CLEANING
Clean glass surfaces and remove labels, paint spots, putty, and other defacement as required to prevent staining.
Glass shall be clean at the time the work is accepted. [Clean plastic sheet in accordance with manufacturer's
instructions.]
3.5 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. Reflective glass shall be protected
with a protective material to eliminate any contamination of the reflective coating. Protective material shall
be placed far enough away from the coated glass to allow air to circulate to reduce heat buildup and moisture
accumulation on the glass. Upon removal, separate protective materials for reuse or recycling. Glass units
which are broken, chipped, cracked, abraded, or otherwise damaged during construction activities shall be removed
and replaced with new units.
3.6 WASTE MANAGEMENT
NOTE: Float glass cannot be recycled with beverage-container glass. Diverting
waste from the landfill contributes to the following LEED credit: MR2. Coordinate
with Section 02 42 00 CONSTRUCTION AND DEMOLITION WASTE MANAGEMENT. Designer
shall verify that items are able to be disposed of as specified.
Disposal and recycling of waste materials, including corrugated cardboard recycling, shall be in accordance with
the Waste Management Plan.[ Separate float glass and reuse or recycle.][ Upon removal, separate protective
materials and reuse or recycle.][ Separate tempered glass for use as aggregate or nonstructural fill.] Close
and seal tightly all partly used sealant containers and store protected in well-ventilated, fire-safe area at
moderate temperature.
3.7 SCHEDULE
Some metric measurements in this section are based on mathematical conversion of inch-pound measurements, and
not on metric measurement commonly agreed to by the manufacturers or other parties. The inch-pound and metric
measurements are as follows:
PRODUCTS INCH-POUND METRIC
Glass 1/8 inch 3 mm
3/16 inch 4.5 mm
7/32 inch 6 mm
1/4 inch 6 mm
3/8 inch 10 mm
Interlayer 0.015 inch 0.38 mm
Glazing Channels 1/4 inch 6 mm