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.
2.2.3
Low Emissivity Insulating Glass
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NOTE: Low emissivity coating should be on the air
space surface of the inner pane of glass (the number
3 surface) unless consultation with the mechanical
designer indicates that it should be placed on the
number 2 surface (inside surface of the exterior
pane).
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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),
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 09915 COLOR SCHEDULE].
2.3
PLASTIC GLAZING
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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 MIL-HDBK-1008 and NAVFACENGCOM Code 04F.
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NOTE: Polycarbonate is more expensive than acrylic
and should be selected for locations which are
highly vulnerable to vandalism or other types of
abuse. Where only one material is used in the
project, the other one should be deleted, except
polycarbonate may be specified as a Contractor's
option when acrylic is used.
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."
SECTION 08800
Page 21
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