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Shear Block For Column Horizontal Thrust Loads

Shear Block For Column Horizontal Thrust Loads

Shear Block For Column Horizontal Thrust Loads

(OP)
I am designing a foundation for a metal building that is being built over a partial existing slab.  I am able to use hairpins at all columns except two.  These two locations are near the existing slab and prevent me from using hairpins.  Does anyone have a suggestion on how to handle the 9 kip thrust load?  Has anyone used a shear block at the bottom of a footing before to handle the thrust loads?  If so, what is the procedure for getting the depth and with of the shear block?

Lumbee  

RE: Shear Block For Column Horizontal Thrust Loads

It sounds as though you need to sit at a table with a structural engineer who does concrete.  There may be all sorts of unusual issues here.  It is difficult to picture what you are doing.

RE: Shear Block For Column Horizontal Thrust Loads

There are a number of threads on this topic, you should try a search on "hair pins".  

I think a better alternative to a shear block is to design the pier/footing as a moment resisting foundation.  There is a good example of how to design these in "Metal Building Systems Design and Specifications" by Alexander Newman, 2nd Edition,page 349.

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