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Re: Swimming Pools

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Check the condition when the pool is drained and the pool bottom is below the water table. The pool might try to float. When they are replacing underground tanks up here (Anchorage AK, few pools) at gas stations, they pour a slab that extends beyond the tank on all sides that will be restrained by the earth above and prevent flotation. I don't know how they handle flotation in the case of pools.

Thor Tandy wrote:
I'm doing a small residential pool (about 35'x24' sloping bottom from 4' to 9'). It's been awhile since I last did a fluid containing structure. Is ACI 315 the correct standard or does anyone know an accessible detailing reference? The primary structural design is not the issue. I've usually taken care of crack mitigation and detailed accordingly but I might have forgotten something secondary but important. Is it common/rare to design the top edge apron as supporting the walls, or should I stick with cantilevered walls? Since it's in-ground, I'm assuming seismic is not an issue ...? Any other advice? TIA

Thor A. Tandy P.Eng, C.Eng, Struct.Eng, MIStructE
Victoria, BC

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