Nedd backup data to confirm columns sitting on concrete footing with no base plate. The situation is a Hss 6x3X1/4 column with a 27 kip load. It has no base plate but sites on a thickened slab that sites on a two foot wide footing. Punching shear is not a problem. Only localized crushing may be an issue. The load is way below the allowable of approx. 70 kips for a 10 foot tall column. Is a baseplate really required? The stress is approx. 6600 psi (27,000/4.09 sq in.) on 3000 psi concrete. This is not an elevated slab. Thoughts, references, other?
Thanks.
Alan L., P.E.
Thanks.
Alan L., P.E.