Designing basement floor of a multi-storey building
Designing basement floor of a multi-storey building
(OP)
At the site in question, the water table is very shallow roughly 3 ft below grade. Our mechanical/civil fellows will be designing a weeping tile system, however I am wondering if it is standard practice for structural to design the entire basement floor (structural slab, not SOG) for the full hydrostatic pressure (for the event that the weeping tile system fails). Let us assume the basement slab is 5m below grade and that the hydrostatic pressure increases linearly from grade, I am finding that the design pressure for the basement slab would be 50 kPa. This seems like a very high value to design the structural slab for. Your guidance would be appreciated. Thank you.






RE: Designing basement floor of a multi-storey building
Dik
RE: Designing basement floor of a multi-storey building
RE: Designing basement floor of a multi-storey building
Dik
RE: Designing basement floor of a multi-storey building
RE: Designing basement floor of a multi-storey building
If the floor is not designed to be held down, you have to provide pop-outs; leaving them out just means the slab will fail before the water rises, but the water will rise either way. You can still be sloped to drain (sump, probably) so that it shouldn't actually rise very high before the owner is aware of the issue.
RE: Designing basement floor of a multi-storey building
RE: Designing basement floor of a multi-storey building
Dik