Essay
A built- up roof (BUR)consists of multiple plies where a ply is defined as one felt field mopped with asphalt. The thickness of one BUR ply is approximately 30 mil. A modified bitumen roof (MBR), on the other hand, consists of modified bitumen sheets. What is the composition of a modified bitumen sheet and its typical thickness?
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A modified bitumen sheet consists of two...View Answer
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