Recently, purchased subject publication(Guide to the Wind Load Provisions of ASCE 7-22) on page 127, the following paragraph Screen Captured below:
"For this example, the MWFRS out-of-plane loads
would be derived using a gust factor G = 0.85 with a maximum positive pressure
coefficient of 0.8 and a maximum negative pressure coefficient of 0.7. As with
the C&C loads, the GCpi would still be ±0.18. The resulting MWFRS out-of-plane
wind pressures on the walls would be +34.8 and -31.4 psf versus the Zone 5 and Zone 4 pressures listed above (see page 126 & 127, of the publication).
The question is how the numbers 34.8 and -31.4 are arrived at following the subistitution
a maximum positive pressure coefficient of 0.8 and a maximum negative pressure coefficient of 0.7?
Not able to reach the authors and was refered to here, please advise soon!!
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Thank you
Anoush Zebarjadian P.E., S.E., M.ASCE
Structural Engineer
CSE Structural Engineers, Inc
San Francisco CA
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