OldGreen wrote:Wrench wrote:I have several sheets of 1/8" plywood of various finishes that would make for good interior finish paneling. Come and get it if you want it.
Can you post specs on the standard for an RV floor as far as joist separation and materials for the joists and subfloor? It would be applicable to this post as well as for reference.
There is no standard. The worst I have seen are the floors that are laminated with styrofoam between the panels (about 1.5" thick styrofoam with 1/8" panels on either side). The best use ~3/4" plywood. Most of these trailers built today use ~1/2"-5/8" OSB because it is cheaper and lighter. Look on the underside of your tent trailer and you can see how far apart they typically spread the joists.
If you really want something sturdy, take a look at the underside of a cargo trailer (B&B Enterprises or Ranch & Home). They are typically built much more durable than the RV's out there, in nearly every aspect. Personally, I would prefer to find and older cargo trailer and convert it.
RV and cargo trailer build quality seemed to peak in the late-90's and early 00's, but fell off rather quickly by '05 (they were selling so fast, the manufacturers were pumping them out way too fast and using cheaper materials). The build quality has gone up since the bankruptcy's of so many manufacturers in '08-'10, but the construction material qualities are still very poor.