roll-formed, with bent or tightly welded or keyed and sealed joints to
completely seal the spacer periphery and eliminate moisture and hydrocarbon
vapor transmission into airspace through the corners. Primary seal shall
be compressed polyisobutylene and the secondary seal shall be a specially
formulated silicone.
2.2.1
Buildings
**************************************************************************
NOTE: When antiterrorism/force protection
requirements apply, specify laminated annealed flat
glass for interior light. Use the bracketed option
regarding ASTM C 1172 in the paragraph below.
**************************************************************************
Provide [6] [10] [13] mm [1/4] [3/8] [1/2] inch airspace. The inner light
shall be [ASTM C 1172, clear annealed flat glass Type I, Class I, Quality
q3] [ASTM C 1036, Type I, Class 1, Quality q4, [_____] mm inch thick] [ASTM
C 1048, Grade B (fully tempered), Style I (uncoated), Type I, Class 1
(transparent), Quality q4, [_____] mm inch thick]. The outer light shall
be [ASTM C 1036, Type I, Class [1 (transparent)] [2 (tinted heat
absorbing)], [2 (solar-reflective)], Quality q4, [_____] mm inch thick] [
ASTM C 1048, Grade B (fully tempered), Style I (uncoated), Type I, Class [1
(clear)] [2 (tinted heat absorbing)][solar-reflective], Quality q4, [_____]
mm inch thick].
2.2.2
Control Towers
**************************************************************************
NOTE: For Air Force installations, do not modify
these requirements without approval of Headquarters,
U.S. Air Force. Where design wind speed is more than
225 kilometers 140 miles per hour, delete the first
and use the second bracketed sentence. Coordinate
term of warranty with paragraph entitled "Warranty."
**************************************************************************
**************************************************************************
NOTE: Requirements for control tower cab windows
will be included in the project specification for
Air Force construction. The use of these
requirements by other agencies should be governed by
agency criteria. Requirements for control tower cab
windows are for the sizes and details on the current
standard Air Force control tower drawings. Any
modification from Air Force installations will be
made only with the approval of Headquarters, U.S.
Air Force. Edit this paragraph to include only the
heat-absorbing insulating glass or the clear
insulating glass.
Wind load requirements must be determined by the
designer and the blanks filled in for each project.
If spare units are required for a particular project
an "Extra Materials" paragraph must be developed for
PART 1 which identifies the items, states
quantities, and indicates to whom, when and where to
be delivered.
SECTION 08800
Page 19
Previous Page
