[72c20customcamper]

For the floor I’m going to use 4x4s and 5/8 exterior plywood . Basically the 4x4s are the nailers and fill the square with item 4 cover with heavy plastic then screw down the ply. Did this in the pole barn at my moms 40 years ago no issues even put a 4 post lift in there on 3x3 1/4 inch steel plates under the legs . Running the lights with my road find generator