Good greif.....

BradW wrote:
TC / Forklift

They sure took lot of time to figure it out.
I parted Lance 1161 and whole floor is having 2 pcs of 1x1 fir under the walls, with cross pieces and Styrofoam sandwiched by thin plywood.
Might be surprise, but Styrofoam well glued on both sides to plywood will add quite a bit to structural integrity.
That evidently can hold the weight of new and dry camper, but when I tried some jacking on my aged camper, the floor under the wall simply dent.