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Seismic Design of Expansion Anchors

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If I have calculated the load on an expansion anchor using 97 UBC it is a
strength design value.  What values do I use to design expansion anchors?
 The catalog gives allowable and ultimate level loads.  The factor of
safety is about 4 for shear and tension.  If I convert the strength load
to service level loads by UBC 1612.3.1 the conversion factor is 1.4.

What values are typically used for expansion anchors in seismic design?

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