As an ‘interested observer’to all these camper van threads I’d like to know how all the wooden frames are fixed to the floor and sides. For instance, are they bolted through the floor and glued to the sides?
I’ve heard of people just screwing straight into the floor but I didn’t want to piece the skin anywhere I really didn’t have to (Transit, so not galvanised) I used the bits where the tie-downs used to be and made an inch-thick lattice frame which I bolted to these points, then screwed a 15mm plywood floor to this frame and used that as the basis for the other bits. Transits have many ribs and things on the walls and a couple on the ceiling, I’ve screwed into these and they are solid.
Also, things like the upright for the cupboard next to the bed are floor-to ceiling, again screwed at both ends and this can be used as a solid base for other things, and the bed frame in the horizontal plane.
It’s not just about keeping things in place, all this stuff is properly heavy and you really need to think about what would hit the back of your head if you hit something at speed or rolled it, I have taken my bulkhead out so made sure everything behind me is really solidly attached.