commercial, C for commercial, HC for heavy
commercial, and AW for architectural). Performance
Grade represents the design pressure to which the
window is constructed.
AAMA 101 establishes minimum Performance Grade for
each Class: 15 for residential (corresponding to a
design pressure of 720 Pa 15 psf); 25 for light
commercial (corresponding to a design pressure of
1200 Pa 25 psf); 30 for commercial (corresponding to
a design pressure of 1440 Pa 30 psf); 40 for heavy
commercial (corresponding to a design pressure of
1920 Pa 40 psf); and 40 for architectural
(corresponding to a design pressure of 1920 Pa 40
psf).
AAMA 101 also includes criteria for specifying
windows required to meet higher design pressures if
minimum pressure is inadequate. These windows are
designated as Optional Performance Grade and should
be specified in increments of 240 Pa 5 psf above the
minimum Performance Grade.
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NOTE: Consult AAMA 1503 "Voluntary Test Method for
Transmittance and Condensation Resistance of
Windows, Doors and Glazed Wall Sections" and select
the minimum Condensation Resistance Factor (CRF)
required for the particular project conditions.
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NOTE: Consult AAMA 101 to calculate design
pressure(s) applicable to the project. Adjust
"design factors" because naval facilities are
typically less than 100 miles from hurricane
oceanline.
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Prime windows shall comply with AAMA 101 and the requirements specified
herein. In addition to compliance with AAMA 101, window framing members
for each individual lite of glass shall not deflect to the extent that
deflection perpendicular to the glass lite exceeds L/175 of the glass edge
length when subjected to uniform loads at specified design pressures.
Structural calculations for deflection shall be provided to substantiate
compliance with deflection requirements. Provide windows of types,
performance classes, performance grades, combinations, and sizes indicated
or specified. Design windows to accommodate hardware, glass,
weatherstripping, screens, and accessories to be furnished. Each window
shall be a complete factory assembled unit with or without glass installed.
Dimensions shown are minimum. Provide windows with insulating glass and
thermal break necessary to achieve a minimum Condensation Resistance Factor
(CRF) of [_____] when tested in accordance with AAMA 1503.
**************************************************************************
NOTE: Include the bracketed paragraph below when
personnel density is greater than one person per 40
square meters430 square feet and minimum ATFP
SECTION 08520N
Page 9
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