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Roof Underlayment

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KOTOR1

Structural
Jan 27, 2009
48
The architectural drawings call off a 40 LB under layment on the roof. Is this the weight per sheet or the weight per square foot. I am trying to get my dead loads for the roof.
 
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It' per hundred square feet or 0.4 psf.

Mike McCann
MMC Engineering
 
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