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Thread: pump to pool pipes depth of trench

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    pump to pool pipes depth of trench

    Is there a building code that specifies the depth of the feed return lines (pvc pipe)

    I heard 18" others say there is no specified depth it what ever you want.

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: pump to pool pipes depth of trench

    Essentially both answers are correct. Generally you bury pipe deeper in colder climates to keep them below the frost lien. For pools that get properly winterized each year it doesn't really matter as there is no water in the pipes to freeze, but as an extra layer of protection it is nice to have pipes below frost depth.
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    Join Date
    Sep 2012
    Lake Nona, Florida

    Re: pump to pool pipes depth of trench

    Our plumber put them down 2 feet. We have no freeze risk here. There was a trench inspection done, so I do think it's subject to local code.
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    Re: pump to pool pipes depth of trench

    I think I'll trench 18-20" and about that width,

    in fact I need to re-route my irrigation around the pool, so I'll put them in the same trench

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    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: pump to pool pipes depth of trench

    I'm sure there is a building code somewhere that applies. Before I picked up a shovel, I'd find out. I have found reference to a Uniform Swimming Pool, Spa & Hot Tub and Uniform Solar Energy Code, but it looks like you may have to buy a copy to get the good stuff. Or spend more time searching than I've spent.

    I did stumble across this code tidbit that would apply where I live:
    At least 36 of pipe between the filter and the heater to allow for future addition of solar heating required. Per 2008 Building Energy Efficiency Standards (BEES)
    Take the time to find out all this stuff before you start digging. And you may find out they want a layer of base rock or sand in the trench. It will ultimately save time if you do it right the first time. You don't want to have to dig things up later.
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