[Preformed metal siding is specified in Section 07412 METAL ROOF AND WALL
PANELS.]
2.1.7
Insulation
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NOTE: Choose one of the following options.
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NOTE: Designer's Options. Use the first paragraph
if the insulation is to be provided by the hangar
door manufacturer, as when new doors are required
for an existing building. Use the second paragraph
if the hangar doors are a part of a new building
which will have preformed metal siding and liner
panels. Ascertain that the project specification
contains the referenced section and that the section
is edited to include the insulation for the hangar
doors.
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NOTE: Specify same "U" value as required for walls
of the building. Specify STC value as required to
keep noise level within the hangar at not more than
85 dBa. The value will depend upon type of
aircraft, apron traffic patterns, and proximity of
run-up areas.
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[Provide insulation that:
a.
Contains no asbestos;
b.
Is permanently secured in place behind the exterior covering; and
c.
Has a flame spread rating of 75 or less and a smoke-developed
rating of 100 or less when tested in accordance with ASTM E 84.
Do not use cellular plastics as exposed finish material. The doors shall
have an air-to-air "U" value of not more than [_____] and a sound
transmission class (STC) of not less than [_____].]
[Batt or blanket insulation as specified in Section 07212 MINERAL FIBER
BLANKET INSULATION.]
2.1.8
Hardware
Provide hangar door hardware to accommodate actual dead loads plus wind
loads specified. Provide top guide rollers, bottom wheels, interleaf
bumpers, tractor pulls, track cleaners, and top bumpers as required for a
complete and operational installation.
2.1.8.1
Wheel Assemblies
Bottom wheels shall be of steel plate or cast steel, having a minimum tread
diameter as required for the actual wheel loading. Where the
height-to-width ratio of the door leaf exceeds three, wheel assemblies
SECTION 08342
Page 11
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