QUOTE (BOBSMITH @ Mar 8 2007, 06:14 PM)

One thing I've been thinking of doing was creating a "bed" frame made of PVC pipe. The middle would rest on the table. The ends would be supported by PVC legs cut to conform to the wheel well on one side and the floor on the other. Easy to put in at night and remove in the morning. Just scribbling on paper for now, but I may go to a building supply joint and see what my costs would be. Should be pretty cheap.
What would the actual bed support surface be made of?
If you're thinking of plywood - it'd likely be fine.
If you're thinking of fabric (like a folding cot) - it isn't going to work without modification. The PVC would bow inwards under the weight of the person in the bed.
I built a collapsing cot for my folding camper. It's a modified camping cot with longer legs so it works like a bunk bed. My primary limitation however was that the thing needed to collapse. If it were a non-folding trailer - I'd have done something a bit less flimsy.
Now - this is just my general impression (not having a Casita) - but I would doubt that the stock table could take any serious weight without failing. Seems just as simple to add a third set of legs in the middle and support it that way. I wouldn't hesitate to use the PVC structurally that way. I used some modifying the cot (2" PVC). Even used the stuff to build the ladder the kids use to get up and down without even a hint of problems. My primary issue would be laying it out so there wasn't a chance of it tipping forward and dumping its occupant out into the aisle.
If you DO try it - I'd suggest adding bumpers fore and aft so it doesn't mar the bulkheads.
Mike