glazing frame bite requirements when personnel
density is greater than one person per 40 square
meters 430 square feet and minimum ATFP standoff
distances are met. This does not include guard type
facilities, single and duplex detached family
housing. These requirements are specified in
Department of Defense Antiterrorism Standards for
Buildings.
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Design windows and rabbets suitable for glass thickness shown [or
specified]. [Exterior glazing shall have a minimum frame bite of 9.5 mm
3/8 inch for structurally glazed window systems and 25 mm 1 inch for window
systems that are not structurally glazed. ]Design sash for [inside]
[outside] [single] [double] glazing and for securing glass with [metal
beads,] [glazing clips,] [glazing channels,] or glazing compound.
2.2.2
Weatherstripping
Provide for ventilating sections of all windows to ensure a weather-tight
seal meeting the infiltration requirements specified in AAMA 101. Provide
easily replaceable factory-applied weatherstripping. Use molded vinyl,
molded or molded-expanded neoprene or molded or expanded Ethylene Propylene
Diene Terpolymer (EPDM) weatherstripping for compression contact surfaces.
Use treated woven pile or wool, or polypropylene or nylon pile bonded to
nylon fabric and metal or plastic backing strip weatherstripping for
sliding surfaces. Do no use neoprene or polyvinylchloride weatherstripping
where they will be exposed to direct sunlight.
2.2.3
Fasteners
Use fasteners as standard with the window manufacturer for windows, trim,
and accessories. Self-tapping sheet-metal screws are not acceptable for
material more than 2 mm 1/16 inch thick.
2.2.4
Drips and Weep Holes
Provide continuous drips over heads of top ventilators. Where fixed
windows adjoin ventilators, drips shall be continuous across tops of fixed
windows. Provide drips and weep holes as required to return water to the
outside.
2.2.5
Combination Windows
Windows used in combination shall be the same class and grade and shall be
factory assembled. Where factory assembly of individual windows into
larger units is limited by transportation considerations, prefabricate,
match mark, transport, and field assemble.
2.2.6
Mullions and Transom Bars
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NOTE: Specify the design pressure used to specify
the Performance Grade or the Optional Performance
Grade for the adjoining windows.
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SECTION 08520N
Page 13
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