use of screws in wood frame shear panels 2

[JackRit]

Does anyone know of any testing that has been done on shear panels using screws instead of nails? I often hear that sheetrock screws are too brittle for the purpose, but given the shape of the heads of sheetrock screws and the fact that most nail failure in shear panels involves pull-through, I would expect sheetrock screws also to fail by pull-through. In any case, there are lots of kinds of screws with head shapes more appropriate to shear panels, such as wafer-headed panel screws, and the data I've seen on panel screws show shear and pull-out strenth much greater (many times greater) than those of comparable-sized nails. But I can't find any information specifically on the use of screws in shear panels for seismic and wind loads.

 

[whyun]

I found this report from the ICC ES site

http://www.icc-es.org/reports/pdf_files/UBC/5053.pdf

 

[RARWOOD]

I have an old report from the American Plywood Association, which has a very small amount of information on the use of #10 screws in diaphragms. The report also has information on the use of staples. The document I have is Report 138 "Plywood Diaphragms" by John R. Tissell, P.E. and James R. Elliot, P.E.