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Re: anchor Bolts vs sst16

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Jim,

The 1997 UBC gives values, but the relationship between your conditions and
the Code values is ambiguous.  The Code values are based on masonry prism
strengths, not grout strength, and, for tension values, are dependent on
edge distance.  Prism strengths are typically less than grout strength.

Some representative Working Stress values from Section 2107.5 for fm = 1500
psi, 4" edge distance tension capacity, Bt: =  970 lb; 3" edge distance
tension capacity, Bt - 550 lb; 2" edge distance tension capacity, Bt = 240
lb; shear capacity, Bv = 1330 lb.

Nels Roselund
Structural Engineer
South San Gabriel, CA
njineer(--nospam--at)att.net



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