base plate design
base plate design
(OP)
I need to size a base plate for uplift, I have a small hvac unit to support, we want to use a 8*8*3/8" plate resting on a existing 3'*3'* 8" footing , to determine "Fp" I need a value for Ap: plate area and A2 : which by defin, is geometrically similar to Ap ,I assume A2 usually refers to area of a pier ,in this I can't find any defin. other than the above in this case would A2 be equal to Ap since the footing is much larger than the base plate .






RE: base plate design
The idea behind that is that the larger A2 helps to confine the concrete being beared on and will allow higher stresses.
RE: base plate design
Can you elaborate?