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旧 2009-09-15, 07:31 PM   #1
huangyhg
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默认 roof underlaymen

roof underlayment
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.

it' per hundred square feet or 0.4 psf.
mike mccann
mmc engineering
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