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Re: Re: 3/8 inch shear panels -Reply

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In a message dated 9/4/98 11:40:51 AM, "LA BD" wrote:

<<For shear wall with uplift forces around 5 to 6 kips may not be a problem
the holdown device.  The problem, however, are usually with the holdown anchor
bolts and required edge distance.  

Allowable service load (building code table 19-e) for a typical 5/8" dia
bolt embedded in f'c of 2500psi with 3-3/4 edge distance is 1500 lbs.  The
shearwall and holdown device may not fail, but the anchorage certainly will.

Let's get real here!  Would anyone anchor a 5-6k. hold-down to a typical 5/8"
anchor bolt?  Simpson's HD6A or PHD6 hold-downs, which have working capacities
of about 5500 lb., require 7/8" anchor bolts and Simpson lists an SSTB28
anchor bolt as appropriate, with a listed allowable tension load of 10,100 lb.

Ralph Hueston Kratz, S.E.
Richmond CA