slab on grade
slab on grade
(OP)
How does the height of the building affects the foundation type? I have a 26' pre-engineered building, but I am not sure if it can be supported on a slab-on-grade, or if it is better for it to be supporting on footings. Does this depend entirely on the loads/reactions?






RE: slab on grade
RE: slab on grade
1) Grade beams and piles.
2) Piers and shallow footings.
3) Slab on grade with a perimeter turned down thickening that acts as a shallow footing, perhaps with some local load sharing to the slab on grade.
#3 may be what you're thinking of. In all cases, it depends on loads and settlement potential among other things.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: slab on grade
RE: slab on grade
Except for a couple of low profile (less than 12' at roof apex) and short (less than 24' longitudinally) buildings we have always designed footings tied into the slab on grade.
Otherwise we would be required to have some fairly thick slabs with adequate reinforcement to withstand uplift and slab cracking from uplift.
Design an integrated footing/slab system - trust me - you will sleep better at night.