Edge Column PEMB
Edge Column PEMB
(OP)
Is there any way to do a 50' span pre-engineered metal building foundation having the main frame columns supported on the edge (next to 1.5" sheet ledge) of the slab if the footing does not extend past the slab? Wouldn't be able to count much of the footing area that extends underneath the building slab for allowable bearing pressure because of eccentricity? Or am I going crazy?
RE: Edge Column PEMB
Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?
-Dik
RE: Edge Column PEMB
The simplest reasonable foundation for this case, DOWN TURNED SLAB.
The figure ( copy and paste ) from Metal Building Systems ( by Alexander NEWMAN )
RE: Edge Column PEMB
RE: Edge Column PEMB
Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?
-Dik
RE: Edge Column PEMB
RE: Edge Column PEMB
Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?
-Dik
RE: Edge Column PEMB
The grade beam is like part of your foundation in the turn-down scenario. The foundation is more of a T-shape.
RE: Edge Column PEMB
Ron247 is dead on with the foundation. Unless it's being used for crane operations or it has a 60psf+ snow load, uplift will control the size of the footings. It comes down to detailing the steel in the stiffer portions of the slab (turndowns, etc.) to resist it.
I've seen a few RTU additions to PEMBs - they cut a hole in the roof, put 4 pipe columns up from the slab with a platform, and patched the roof around it. PEMB didn't take the new loading. It's usually best to assume they have zero residual capacity.
RE: Edge Column PEMB
Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?
-Dik