e.
Salt Spray Test: Withstand a salt spray test for a minimum of
1000 hours in accordance with ASTM B 117, including the scribe
requirement in the test. Immediately upon removal of the panel
from the test, the coating shall receive a rating of [8, few
blisters] [10, no blisters] in field as determined by ASTM D 714;
and an average rating of [6, 3 mm] [7, 2 mm] [6, 1/8 inch] [7,
1/16 inch] failure at scribe, as determined by ASTM D 1654.
Rating Schedule No. 1.
f.
Abrasion Resistance Test for Color Coating: When subjected to the
falling sand test in accordance with ASTM D 968, coating system
shall withstand a minimum of [50][100][_____] liters of sand per
mil thickness before appearance of base metal.
g.
Humidity Test: When subjected to a humidity cabinet test in
accordance with ASTM D 2247 for 1000 hours, a scored panel shall
show no signs of blistering, cracking, creepage, or corrosion.
h.
Gloss Test: The gloss of the finish shall be 30 plus or minus 5
at an angle of 60 degrees, when measured in accordance with ASTM D
523.
[i.
Glare Resistance Test:
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NOTE: The requirements for glare resistance should
be included only when specifically required by the
facility for critical glare areas such as control
towers or other structures where glare can be an
operational hazard. Refer to MIL-HDBK-1028/1,
"Aircraft Maintenance Facilities," for assistance in
determining critical glare areas. Delete gloss test
above if this paragraph is included.
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Surfaces of panels that will be exposed to the exterior shall have a
specular reflectance of not more than 10 when measured in
accordance with ASTM D 523 at an angle of 85 degrees. Specular
reflectance may be obtained with striations or embossing.
Requirements specified under "Formability Test" will be waived if
necessary to conform to this requirement.]
1.7
WARRANTY
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NOTE: This warranty paragraph may be used with this
guide specification without special authorization.
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Furnish manufacturer's no-dollar-limit materials and workmanship warranty
for the roofing system. The warranty period shall be not less than 20
years from the date of Government acceptance of the work. The warranty
shall be issued directly to the Government. The warranty shall provide
that if within the warranty period the metal roofing system becomes
non-watertight or shows evidence of corrosion, perforation, rupture or
excess weathering due to deterioration of the roofing system resulting from
defective materials or installed workmanship the repair or replacement of
the defective materials and correction of the defective workmanship shall
be the responsibility of the roofing system manufacturer. Repairs that
SECTION 07611N
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