Floor slab loading and building columns
Floor slab loading and building columns
(OP)
We are beginning to get into buildings with large floor loads 500-1000 psf. When looking at this as a surcharge above footings when designing the foundations, what are people using as a reduction to the allowable soil bearing at a building column? The large surcharge loads may reduce our soil capacity by half. Are you using the full slab load or some portion thereof?






RE: Floor slab loading and building columns
RE: Floor slab loading and building columns
If you're designing the footings and you have a slab on grade above then you would include the full service load pressures and the soil in between. I've never heard of any reductions in these cases.
RE: Floor slab loading and building columns
RE: Floor slab loading and building columns
RE: Floor slab loading and building columns
Intuitively, I think that the pressure on your floor slab would need to be accounted for in the design of the footing, possible by reducing the allowable bearing value by the expected surcharge.
RE: Floor slab loading and building columns
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.