Thanks for reply! Plywood is not a good source for equal load distribution on a flat solid surface with plate over the top given the information provided? Understand stiffness and strength of plywood is not that great. Just to provide evenly distribution of the plate itself or get max plate...
If I place 4'x8'sheet of plywood on a flat concrete surface then place a 4x8 steel plate on top of the plywood, then place a 72"L x36"W load in center; will the load distribute out to the total sqft to the concrete surface? How much will it distribute?