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Inverted T beam strips foundation

Inverted T beam strips foundation

Inverted T beam strips foundation

(OP)
Dear experts

I’m designing foundation of precast bearing wall , foundation system will be inverted T beam , the model of foundation is two elements shell element for flange and frame element for the stem , my question is , shall i design the stem as a beam ( top ,bottom reinf. & stirrups) or design as pedestal on the lateral loads only due to soil pressure and suppose that this stem will be transfered all of the loads to the shell by bearing .

Thank you

Thank you

RE: Inverted T beam strips foundation

Sketch? Is this a 'stub' foundation wall on a simple strip footing?

Dik

RE: Inverted T beam strips foundation

If it's a straight bearing wall, I'd probably go the pedestal route or a very nominal beam. If it's a shear wall, then a beam of some sort would probably be required. It basically comes down to how much you need to redistribute the loads delivered by the precast wall panels. I would also recommend a hand analysis rather than shell and frame elements. Given the many uncertainties involved, few foundation elements warrant that level of analysis. And fancy FEM can sometimes obfuscate that which is a) truly important and b) usually pretty darn simple.

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.

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