Floor Slopes in Structural Slabs
Floor Slopes in Structural Slabs
(OP)
I have a 7" main floor structural slab over 6" void form (no crawlspace required). The interior portion of the slab is supported off a grid of cast in place concrete friction piles c/w drop panels.
Now, there are some areas that will require floor drains, and four finished sloping sides to each drain. This results is a smaller slab depth, which theoretically reduces your "d" to a minimum at each floor drain location. (Assuming the slope is say 1-2%, that could result in losing 1-2" of depth at the drain area) Is there some way of allowing the bottom of the slab to remain at a constant elevation and still design the slab to account for the floor slope?
Now, there are some areas that will require floor drains, and four finished sloping sides to each drain. This results is a smaller slab depth, which theoretically reduces your "d" to a minimum at each floor drain location. (Assuming the slope is say 1-2%, that could result in losing 1-2" of depth at the drain area) Is there some way of allowing the bottom of the slab to remain at a constant elevation and still design the slab to account for the floor slope?






RE: Floor Slopes in Structural Slabs
RE: Floor Slopes in Structural Slabs
OR,
...you could just require the preparation grading to slope with the floor slab and provide a uniform thickness. With slight slopes like this, the rebar will simply turn and slope gradually with no specific bending required.
RE: Floor Slopes in Structural Slabs
If it is needed because of potential soil swelling problems, you must maintain the 6 inch clear span below the plumbing lines, too...
Please see FAQ731-376 for great suggestions on how to make the best use of Eng-Tips Fora.
RE: Floor Slopes in Structural Slabs
...except in S.A. TX
RE: Floor Slopes in Structural Slabs
Please see FAQ731-376 for great suggestions on how to make the best use of Eng-Tips Fora.
RE: Floor Slopes in Structural Slabs
RE: Floor Slopes in Structural Slabs