Frame garage floor
Frame garage floor
(OP)
When I design frame garage floor I usually use 1.5 DL (4" of concrete + framing = 1.5x65psf). I also use 2 scenario of LL, 40 psf or 3000 psf point load. I use 1 1/8 plywood. I usually design it for 600/L live load or 240/L total load (with the factored DL). My question is, according to IBC, I can only put 4" of concrete. If I have 23' x 23' of garage and the architect wants a drain in the middle, how do I slope the concrete? Is lowering the grade 1" in the middle enough? Can I put more than 4" so I can slope it 1/4"/ft and still have thick enough concrete in the middle? How thick is not thick enough for framed slab? I appreciate your feedback.






RE: Frame garage floor
Dik
RE: Frame garage floor
RE: Frame garage floor
RE: Frame garage floor
Would it help to switch to light gauge framing?
RE: Frame garage floor
RE: Frame garage floor
Dik
RE: Frame garage floor
RE: Frame garage floor
My thought would be to ditch the wood framing altogether and do a structural slab. You could use the steel beam to support it as well. I think twinnell was suggesting cold rolled framing, not steel pans, to get away from the wood issue.
I just don't think a wooden garage floor with a concrete topping is a good idea.
RE: Frame garage floor
RE: Frame garage floor
Don Phillips
http://worthingtonengineering.com