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cantilever floor
Posted:
Tue Sep 26, 2006 5:09 pmby Mike Angeles
All, Im having some difficulty coming up with a design to cantilever the floor in the back 12", Wouldnt be much weight to support (floor for the galley), I have a HF 1800# Trailer I plan on a 5 x 10, over the wheels. I dont have access to welding equipment unfortunatly, I was going to frame the floor with 2x? to get clearance for the Wheel, and go with 1/2' Ply for the flooring. Anyone cantilever off the back? any suggestions. Ok, Ok, Ill set up my Gallery at least for my design sketches,
Thanks,
Mike
Posted:
Tue Sep 26, 2006 6:08 pmby halfdome, Danny
My tear has a 6" canteliver on the rear and I have about 9" or more of wood back there to support it with elevator bolts. 
Danny
Posted:
Tue Sep 26, 2006 7:18 pmby Arne
take a look at the 3rd pic.. If you look close, you will see about 16" hanging off beyond the back of the h/f 1,800# trailer.... The overhang is a galley I added on and it contains all cooking stuff.... no problem. The walls make it very rigid..... oh, there's a microwave back there as well. Plus a stove.
http://www.freewebs.com/teardrop-stuff/
over hang
Posted:
Tue Sep 26, 2006 7:40 pmby jay
general rule of thumb for cantilever is 1/3 hanging over and 2/3 supported.
if you're planning on using an 8' sheet of plywood with a 2' addition, put the short piece up front where the seam will be [hopefully you'll glue & screw a piece underneath continuous] supported. you don't want the floor to "hinge" at the seam.
consider [just on the overhanging 12"] adding an additional bottom skin on the 2" support pieces to make a "torsion box" out of the overhanging galley floor.
oh yeah; use glue & screws.
Posted:
Tue Sep 26, 2006 7:42 pmby Mike Angeles
Yikes! and I was worried? How did you do the floor? or whats it attached to might be a better question.
Jay- that might be a viable solution, No overhang in front as it will be made up of the front curve. So I only need to over hang 12" in the back
Mike
Posted:
Tue Sep 26, 2006 9:27 pmby Steve Frederick
Hi Mike! Welcome!
I've built 4 T/D's, three with an overhang, front and rear! My last project, an eight-footer, was built over a six-foot frame. A new design in the works will have overhangs as well.
As was said, if the overhang is part of a box, as it would be when glued/screwed to the walls, you shouldn't have any trouble. Many here have built this way to utilize a shorter frame, or, to save weight.