UL 580. Height of corrugation at overlap of adjacent roof sheets shall be
the building manufacturer's standard.
2.2.2
Siding
Length of sheet shall be sufficient to cover the entire height of any
unbroken height of wall surface unless otherwise approved. Width of sheets
with [overlapping configurations shall provide not less than 610 mm 24
inches of coverage in place] [interlocking ribs shall provide not less than
305 mm )12 inches of coverage in place]. Siding shall have [configurations
for overlapping adjacent sheets] [or] [interlocking ribs for securing
adjacent sheets]. Siding shall be fastened to framework using [exposed]
[or] [concealed] fasteners.
2.2.3
Steel Panels
Roofing and Siding shall be zinc-coated steel conforming to ASTM A 653/A
653M, G 90 coating designation; aluminum-zinc alloy coated steel conforming
to ASTM A 792/A 792M, AZ [55] [50] coating; or aluminum-coated steel
conforming to ASTM A 463/A 463M, Type 2, coating designation T2E5. Panels
shall be 0.610 mm 0.024 inch thick minimum.
2.2.4
Aluminum Panels
Roofing and Siding shall be aluminum alloy conforming to ASTM B 209M ASTM B
209, temper as required for the forming operation, minimum 0.813 mm 0.032
inch thick.
2.2.5
Factory Insulated Panels
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NOTE: Factory insulated panels shall only be used to
meet portability requirements or other operational
requirements. This paragraph will be used in
conjunction with the previous paragraphs properly
edited as required for the design.
Select flame spread rating of 25 and smoke developed
rating of 450 for Class A interior finish as defined
in NFPA 101, and select 75/450 for Class B interior
finish.
The designer will determine the required R-value of
the assembled panel at 24 degrees C (75 degrees F)
in accordance with ASTM C 236, and will show the
R-value at the appropriate detail on the drawing.
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Insulated [wall] [wall and roof] panels shall be factory-fabricated units
with insulating core between metal face sheets, securely fastened together
and uniformly separated with rigid spacers, facing of steel or aluminum of
composition and gauge specified for covering, constructed in a manner that
will eliminate condensation on interior of panel. Panels shall have a
[factory color] [mill] finish. Insulation shall be compatible with
adjoining materials; nonrunning and nonsettling; capable of retaining its
R-value for the life of the metal facing sheets; and unaffected by extremes
of temperature and humidity. The assembly shall have a flame spread rating
not higher than [25] [75], and smoke developed rating not higher than 450
when tested in accordance with ASTM E 84. The insulation shall remain
SECTION 13121
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