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[SEAOC] Re: [SEAOC] Gyp. board shear walls in LA

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A cyclic testing program for gypboard sheathed shear walls has been conducted
over the last several months at UC Irvine.  The gypboard test results were
that the allowable working stress load for shear should be 30 plf.   Several
years ago, a similar test was conducted in Northern California and had
similar results, approximately 30 plf for design shear.  A UBC code change
for allowable gypboard shear values is being considered for the near future. 

Michael Cochran
Brian L. Cochran Associates
Los Angeles CA.