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Re: Swimming Pools

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Thor:
 
When I designed my pool I used a bond beam around the top and considered hydrostatic loads on interior with pool full and no support from the soil and pool empty with saturated soil on the exterior.  As a precaution I installed  a 1 way valve in the bottom drain box that would remain closed when the pool was full but would relieve hydrostatic pressure if their was any when the pool was drained.  My pool is also 9' at deep end and 4' at shallow end.
 
Ray Shreenan 
----- Original Message -----
From: Thor Tandy
To: SEAINT
Sent: Thursday, January 29, 2009 8:40 AM
Subject: Swimming Pools

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
Canada