precast bearing on grade beam
precast bearing on grade beam
(OP)
I have a 12,000 lb 6" thick precast panels that will bear on my continuous grade beam. Assuming during erection there will be two bearing points that will each take 6k. The ledge (like brick dap) is 6" wide so panel bearing will be centered as close to edge of concrete as 2 1/2 inches. Let's say they use 4" bearing plate, what kind of shear failure plane would I be looking at? Similar to corbel analysis?
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RE: precast bearing on grade beam
Mike McCann
McCann Engineering
RE: precast bearing on grade beam
Intermediate shim points present a similar issue in that the load, at least at some moments during installation, will bear only on two points (thats what defines a straight line - the panels will not deform to put load on the added points).
www.caryconcrete.com
RE: precast bearing on grade beam
Secondly, you can use shear friction analysis to design the reinforcing for the ledge.
You also may need to increase the load to allow for any sudden impact during erection.