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Re: H/b ratio for Low shear walls

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In a message dated 8/17/99 3:17:00 PM Pacific Daylight Time, 
cgreenlaw(--nospam--at) writes:

<< It is true that excessive deflection was given as the reason for widening
 the permissible ratio to 2:1 from the narrower former 3-1/2 to 1, in the 97
 UBC cycle. Yet the code change proponents insisted on disallowing any usable
 shear value to the ratios between 2 and 3-1/2, rather than add requirements
 and provisions that would allow engineers to design out the offending
 features or conditions that research showed caused the unwanted deflections. 

I have been thinking about the same thing for some time. If the code limits 
the h/d ratio to prevent excessive deflections, then why check the 
deflection? or if deflection is kept at the allowable, why the h/d limitation?

Oshin Tosounian, S.E.