2.1.8.1
Glass Mirrors
Glass for mirrors shall be Type I transparent flat type, Class [1-clear]
[2-tinted], Glazing Quality q1 6 mm (1/4 inch) 1/4 inch thick conforming to
ASTM C 1036. Glass color shall be [[clear] [bronze] [gray] [_____]] [as
shown in Section 09915 COLOR SCHEDULE]. 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
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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.
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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
SECTION 08800
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