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ASCE 37-02 Construction Wind Loads

ASCE 37-02 Construction Wind Loads

ASCE 37-02 Construction Wind Loads

(OP)
I am designing an exterior temporary construction wall (38'6" tall).  The wall may be in place for quite some time (6-12 months) so I was designing using components and cladding wind loads from ASCE 7-05.  My office does not have a copy of the ASCE 37-02 "Design Loads on Structures During Construction".  I ordered the book today, but I the project may not have the time to wait for it.  My questions are as follows:

1.  Does the ASCE 37-02 cover wind loads?  What is the maximum duration that they allow a structure to remain and  still be considered "temporary construction"?

2.  If I have a wind speed of 100 mph, exposure C, Aeff = 500 psf, gamma of 1.49 (Rh=40'), what type of reduction in the wind load would I expect?  Is it worth taking this reduciton?  Right now the interior C&C wind load is 14.9*1.49 = 22.2 psf.

Thanks for your help.
 

RE: ASCE 37-02 Construction Wind Loads

ASCE 37-02 has you reduce the design wind speed based on your construction period.  For a period of 6 weeks to 1 year, the reduction factor is 0.8.  So your 100 mph wind speed would become 80 mph.  Use that speed in the ASCE 7 equations to calculate your wind pressure.  The speed gets squared, so your wind pressures would be reduced by 0.64.

RE: ASCE 37-02 Construction Wind Loads

(OP)
exactly what I was looking for.  Thanks.

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