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RE: pool wall design
- To: "Seaint@Seaint. Org \(E-mail\)" <seaint(--nospam--at)seaint.org>
- Subject: RE: pool wall design
- From: "Jim Persing" <jpersing(--nospam--at)FHOARCH.COM>
- Date: Fri, 14 Nov 2003 10:28:23 -0800
My first reply to this ended up
as an attachment (?). I know that I don't open attachments from this list
so I am resending the information, hopefully, not in an
It has been a while since I have designed pools
but there is some criteria out there regarding the slope at which support is
considered -- 20 or 30 degrees or so. This makes the weight of the wall
acting as part of the outward cantilevered moment. Support of the water
pressure is assumed to be directly against the soil except for the top 2 or 3
feet and that has to be cantilevered for water pressure out (construction
removal of the soil and inadequate re-compaction). A bond beam needs to be
at the top and it has to be able to span across the width of the equipment
access trench to dig the pool (8 or 10 feet). Expansive soil applies more pressure for the cantilever
part of the wall and should be considered.
A "floating" pool
(no lateral soil support) is a whole different thing. A pool supported on
piles is a real challenge.
A hydrostatic relief
valve should be installed in the deep end so that any water pressure when the
pool is empty will just fill the pool and equalize the
construction conventions will dictate the size and spacing of rebar but usually
it is somewhat close at the bottom and is cut off part way
You should check
regulations for depth when there is a diving board and be sure you are covered
there. You should also have structural details for the light box and
This information is
about 20 years old and there may be some other things that I have forgotten to
include. If you are only going to do one or two (see Stan's post) I would
recommend that you don't do it. If you are going to do lots of them then
it is worthwhile to do a lot of checking first and make up your fee on the
If you get into the
mechanical aspects, i.e. size of pumps, etc. be sure to do your homework because
there are limitations and restrictions.