I have an issue with a part of my floor sagging and flexing when walked on. The solution is to support it from below. The item that comes to mind is a couple unistrut lengths attached to brackets that are bolted to the both frame rails.
The problem at hand is that the frame is made of flat steel formed into a C channel. And the open part of the C channels are both facing inwards. That limits the size of my brackets and makes me have to do some engineering to figure out what kind of loads I am dealing with.
Here is a sketch along with a second idea for the bracket:
Now I see this helping in 3 ways:
1) The primary function of supporting the floor.
2) Stops all flexing on the support beam when using the fold out stairs.
3) I can use the Unistrut beams to hang things like a second spare tire or another storage compartment, or a secondary water container.
I checked the beam loading for 5.5 feet of the P1000 Unistrut, and it's about 600 lbs. That means I would have 1200 lbs loading, which is way more than I would consider loading it. Also, the deflection at that load, is about .3 inches: exactly what I'm trying to avoid. the neat thing is, this will only weigh about 22 lbs plus the brackets and nuts & bolts.
