BUILDINGS. Since glazed panels may be hazardous,
safety glazing should be generally provided as
described below:
FIRE/SAFETY RATED GLASS
(1) Glazed panels of any size located adjacent to a
doorway, with the nearest vertical edge of panel
within 1219 mm (48 inches) of doorway, and with
bottom edge of panel below top of door. Safety
glazing is not required for panels separated from
the doorway by an intervening interior permanent
wall.
(2) Glazed panels with a surface area greater than
0.84 m2 (9 ft2) where there is a walking surface on
either side of panel, and the walking surface is
within 914 mm (36 inches) of the panel. Safety
glazing is not required if the lowest edge of the
glazing material is 457 mm (18 inches) or more above
both walking surfaces, or if the panels have a
horizontal member, such as a mullion or permanent
railing not less than 38 mm (1-1/2 inches) in width,
capable of withstanding a horizontal load of 75 kg/m
(50 plf), on the accessible sides of the glazing and
located between 609 mm and 914 mm (24 and 36 inches)
above the walking surface.
(3) Where insulating glass units are used in
locations requiring safety glazing, both panes shall
be safety glass.
(4) For exterior applications, safety glazing must
also meet the wind and snow load requirements in
accordance with ASTM E 1300.
(5) In general, any glazed area subject to human
impact should be provided with safety glazing or
other acceptable protective devices such as
handrails or horizontal mullions.
ASTM C 1036 covers the quality requirements for
clear annealed glass, transparent tinted
heat-absorbing and light-reducing glass, patterned
and wired glass with a series of classification
designations such as Types, Classes, Styles, Forms,
Qualities, Finishes, and Intended Uses, as defined
below:
1. Type designations are: Type 1 - Transparent
Flat Glass; Type II - Patterned and Wired Glass.
2. Class designations are: Class 1-clear; Class
2-tinted Heat-Absorbing and Light-Reducing; Class
3-tinted, light-reducing.
3. Style designations are: Style A - Higher light
transmittance; Style B - Lower light transmittance.
SECTION 08800
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