Englert S3000 - Manual (Page 2)

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1.4 PERFORMANCE REQUIREMENTS (Continued)
B. PRODUCT PERFORMANCE
1. Structural: Uniform load capacity shall be determined by testing in strict accordance with the principles of
ASTM-1592.
(7.1) Roof test specimens shall be representative of the main body of the roof, free from influence of
perimeter conditions. The setup shall be continuous over one or more supports and contain at least
five panel widths.
(7.1.2) No roof attachments are permitted at the sides other than the standard gable or rake condition. For
uplift tests, at least one end seal shall be flexible and in no way restrain the crosswise distortion of
panels. One end may simulate an eave condition if at least 12 feet away from the mid-roof clip under
evaluation.
(7.2.1)
Roofing panels and accessories are to be production material of the same type and thickness
proposed for used on the project.
(10.1.1) Longitudinal seals or plastic film shall not span any crevice or cracks that may tend to separate under
pressure (e.g. plastic films used to seal the chamber must be applied into the side seam of the panel
so as to apply a uniform static pressure to the entire cross section of the panel).
2. Design capacity for conditions of gauge, span or loading other than those tested may be determined by the
interpolation of test results in accordance with the Specifications for Aluminum Structures. Extrapolation
outside the range of the tests is not acceptable. The system as installed, shall carry an Underwriters Wind
Uplift Class 90 rating in addition to and not in lieu of other performance criteria set forth by this specification.
3. Weathertightness – When tested in accordance with the principles of ASTM-E-1680 Air Test and ASTM-E-
1646 Water Test.
4. Factory Color Finish: The manufacturer shall have conducted tests on previously manufactured panels of
the same type and finish as proposed for the project to assure conformance with these specifications. The
term “appearance of base metal” refers to the aluminum under the organic coating. Panels shall pass the
following tests:
a. Salt Spray Test: A sample of the panels shall withstand a salt spray test in accordance with ASTM-B-
117, including the scribe requirement in the test. Duration shall be for a minimum of 3,000 hours for
aluminum. Immediately upon removal of the panel from the test, the coating shall receive a field blisters
rating of #10 (no blisters) in accordance with ASTM-D-714, and creepage for scribe of 1/16” maximum.
b. Formability Test: When subjected to a scored T-Bend using impact wedge bend apparatus in
accordance with AST-D-3281, exterior coating film shall show no cracking and no pick off with Scotch
610 tape at 3-T Bend prior to fracture of base metal.
c. Accelerated Weathering Test: A sample of the panels shall withstand a minimum of 2,000 hours
exposure in accordance with ASTM-D-822 with the following results: Chalk rating of 8 to 10 (no chalk)
per ASTM-D-659. Color change no greater than 2 delta E units per ASTM-D-2244.
d. Abrasion Resistance Test for Color Coating: In the Falling Sand Test in accordance with ASTM-D-
968, coefficient of abrasion shall be a minimum of 55 liters of sand per mil of coating thickness before
appearance of base metal.
e. Humidity Test: When subjected to a humidity cabinet test in accordance with ASTM-D-2247 for 3,000
hours, panels shall show no field blisters and no change in pencil hardness after 24-hours.