Forum Discussion
DrewE
May 01, 2017Explorer II
The floor may well be held in by the bolts and nuts, maybe underneath a thin top layer of subfloor. It could also be glued down to the frame, though that's a lot less likely if it's original 1960's construction. You might be able to get some clues on the construction by examining the bit exposed where the door opens (maybe with some exploratory demolition from that point).
I would suggest you rethink your structural member sizes. 3/4" plywood and 4x4 posts are going to be heavy for what I assume is a pretty light-duty trailer suspension. The posts, in particular, would be far, far stronger than is necessary for supporting the truck cap. 2x2 should be plenty, particularly with some diagonal bracing or skin to keep them from deforming under load. I personally would also forego using pressure treated wood for this, since it's not in ground contact and the pressure treatment chemicals can do unsavory things to people and a fair few metals. Much of the pressure treated wood, at least around here, is none to straight or clear or well-seasoned. (If you do use it, make certain you don't have any aluminum parts in contact with the pressure treated wood.)
It does sound like it could be a fun project.
I would suggest you rethink your structural member sizes. 3/4" plywood and 4x4 posts are going to be heavy for what I assume is a pretty light-duty trailer suspension. The posts, in particular, would be far, far stronger than is necessary for supporting the truck cap. 2x2 should be plenty, particularly with some diagonal bracing or skin to keep them from deforming under load. I personally would also forego using pressure treated wood for this, since it's not in ground contact and the pressure treatment chemicals can do unsavory things to people and a fair few metals. Much of the pressure treated wood, at least around here, is none to straight or clear or well-seasoned. (If you do use it, make certain you don't have any aluminum parts in contact with the pressure treated wood.)
It does sound like it could be a fun project.
About DIY Maintenance
RV projects you can tackle on your own with a few friendly pointers.4,352 PostsLatest Activity: Jan 20, 2025