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1507.11 Modified Bitumen Roofing
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The installation of modified bitumen roofing shall comply with the provisions of this section.
Modified bitumen roofing shall have a design slope of not less than one-fourth unit vertical in 12 units horizontal (2-percent slope) for drainage.
Modified bitumen roofing materials shall comply with ASTM D6162, ASTM D6163,ASTM D6164, ASTM D6222, ASTM D6223, ASTM D6298 or ASTM D6509.