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Thread: Leveling for 21' round pool

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    Join Date
    Jul 2013
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    British Columbia/Canada
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    Leveling for 21' round pool

    Hello. I'm installing a 21' steel wall pool. My yard is slightly slanted so one side needs 18" dug out to meet the lowest point on the other side, My question is, how level does my ground need to be? I've reached compacted clay and after 3 days of raking and rototilling I cannot get any further. It's like concrete. I'm within 1 1/2 inches, but not sure if that's ok. Do you think I can backfill an inch with this clay on the low side if I pack it? That would even it out.
    Thank you, Mrs D.

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    MilkMaid's Avatar
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    Jun 2013
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    Re: Leveling for 21' round pool

    We were in the same boat as you! We had bought a 21' round pool and had 18-24" to dig down when we hit red clay. We were within 3/4" level around the edge where the pool wall was going to sit and a little high in the middle. My pool installer (not happy with him) just filled the middle with sand and was supposed to smooth it out (he didn't, but make sure you do). Trust me, you are going to want this thing to be as level as possible, because if not, every time you walk by your pool and it's a little lopsided, you're going to wish you had taken the time to do it right. Not only for visual pleasure, but safety reasons also.
    21'x54" Quest (Resin) -11,700 gal. AGP
    Hayward 18" Sand Filter System (150lbs.)
    1.5-HP Power-Flo Pump (2100 gph)
    Terra Cotta liner (25 gauge)
    TF-100 test kit
    BBB method
    Full sun
    :)

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    Re: Leveling for 21' round pool

    Quote Originally Posted by MrsD View Post
    Hello. I'm installing a 21' steel wall pool. My yard is slightly slanted so one side needs 18" dug out to meet the lowest point on the other side, My question is, how level does my ground need to be? I've reached compacted clay and after 3 days of raking and rototilling I cannot get any further. It's like concrete. I'm within 1 1/2 inches, but not sure if that's ok. Do you think I can backfill an inch with this clay on the low side if I pack it? That would even it out.
    Thank you, Mrs D.
    Can I use sand to level it all out? Some spots will have an inch or so and other spots will have none. Does this work? I am also putting down a Rhino pad so was going to skip the sand but I can get some if this will work.

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    mac.dblues's Avatar
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    Jul 2013
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    Arkadelphia, AR
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    Re: Leveling for 21' round pool

    Sand is ok for smoothing gouge (sp?) marks and such, AFTER you finish digging down to level. Even though it seems like it would work to build back up with the clay, it won't work. You have to remember your pool will weigh some where in the neighborhood of 85000 lbs when filled.
    Mac.Dblues and ProfessorDaisy's Lower Arkansas Pool Install
    Intex UltraFrame 20ft x 52in deep, 9,400 Gallons / Approx 78,500 lbs, Intex 1600 GPH, 14" sand filter, Hayward Dyna-Skim SP1091LX, Taylor K-2006, SpeedStir, Sample Sizer
    First Fill May 2014, Deck finished June 2014, Mods happening probably on a continuous basis. Stay tuned.....

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    Casey's Avatar
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    Apr 2007
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    Re: Leveling for 21' round pool

    Keep digging. Spray it down with water at night and work on it in the day. You've got to get it level.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

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    jmcdtucson's Avatar
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    Jun 2014
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    Tucson, AZ
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    Re: Leveling for 21' round pool

    Will a jackhammer help? That's what I used.
    Intex 12'x24'x52"
    8,403 gallons
    Intex SF60110 2450 GPH Sand Filter
    Intex CS8110 SWG
    Aquabot AJET121I Pool Rover S20-40

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    Re: Leveling for 21' round pool

    Thanks. We did get it pretty much level and used manufactured fines to bring up the low side and the holes. That stuff is incredible!

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