I searched around and couldn't find anything, but this site seems to be a great resource already. If this is to be in a different forum please move it or let me know, sorry.
I have a VW Van, the upper bunk only had the rear attached portion when I got it. Basically I built the remaining portion (that folds out) using 3/4" birch plywood. The dimensions of each are 43" Wide by 19" deep. I'm 200lbs, I just want to be sure I won't crash through! I have found sagometer sites etc, but I cant seem to find what the structural weight limit on birch plywood is, at a span of 43". Also,the existing portion and the 2-43"x19" portions are attached together with 36" piano hinges.
Any advice is much appreciated. Thanks