-07 C (+20 F) 85
85
85
85
85
90
95
-01 C (+30 F) 85
85
85
85
85
85
90
Note: The table is based on 21.1 C (70.0 F) and an
exterior (outside) wind velocity of 24 km/h (15
mph). The Condensation Index value in the table
indicates the percentage of area-weighted surface
area that must have a temperature greater than the
Dew Point Temperature indicated for the percent
Example
A thermal performance evaluation on a window unit
indicates that 12% of the determined exposed
interior surface area has a temperature less than
the standard dew point temperature of 5.0 C (41 F).
Take 100% of the interior determined exposed surface
area and subtract 12% from it. This gives a CI
number of 88. This window would have very good
resistive qualities to the formation of condensation.
**************************************************************************
The condensation index rating shall be [85] [_____] as determined using
NFRC approved software THERM.
1.3.6
Life Safety Criteria
**************************************************************************
NOTE: Designer must indicate on the drawings which
windows serve as rescue and/or secondary means of
escape.
**************************************************************************
Windows shall conform to NFPA 101 Life Safety Code when rescue and/or
second means of escape are indicated.
1.3.7
Sound Attenuation
**************************************************************************
NOTE: Aluminum environmental control windows have a
"built-in" sound attenuation. This paragraph will
be used only when sound attenuation is a design
parameter.
**************************************************************************
The window unit shall have a minimum STC of [[41] [_____] with the window
glazed with two pieces of 6 mm 1/4 inch thick laminated glass] [[34]
[_____] with the window glazed with 13 mm 1/2 inch air space between two
pieces of 6 mm 1/4 inch thick glass] when tested in accordance with ASTM E
90 and ASTM E 413.
1.4
QUALIFICATION
Window manufacturer shall specialize in designing and manufacturing the
type of aluminum windows specified in this section, and shall have a
minimum of [_____] years of documented successful experience. Manufacturer
shall have the facilities capable of meeting contract requirements,
single-source responsibility and warranty.
SECTION 08520A
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