ordinary plywood

How Strong Is Plywood? A 12-by-36-inch piece of 3/4-inch fir plywood can easily support 50 pounds. However, a 12-by-36-inch piece of 1/4-inch thick plywood will not support that much weight. It will only support about 5 pounds before bending. Is plywood strong enough to walk on? If you plan to finish the floor in the