I built a wood platform out of pressure treated lumber 6ft X 4ft 2x6 with beams every 16 inches and 2x6 deck. It is bolted into the house 2x10 on the 6 ft rear wall and carriage bolted to an existing deck on one 4ft side. It is carriage bolted to 4 4x4's that extend to a concrete driveway.
The generator weighs a total of 500 lb. I need to compute the weight per square inch that the platform will support.