Shear Block For Column Horizontal Thrust Loads

[lumbee]

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

 

[RiBeneke]

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.

 

[jheidt2543]

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.