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Thread: Pool backfill material and sequence

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    Pool backfill material and sequence

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    Contemplating all this as well. Pool builder was going to backfill with the dirt. My mason said **** do it, crushed Stone, with sand around the plumbing and geotextile between layers. Any specific stone I should look for? RCA, 3/4 clean blue, 3/8 lime??? I'm on Long Island and really everythings available. Final patio will be pavers over cement. My walls are 10 inch poured concrete..should I ask for some sonotubes or is that overkill, although I like overkill.[attachment=0:3if9eulu]ImageUploadedByTapatalk1373826584.160126.jpg[/attachment:3if9eulu]
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    Re: Pool backfill material and sequence

    Don't know what happened to the thread I posted this in, excuse me if I hijacked, but figured it was same subject. I searched here and spoke to multiple builders... Some just notch concrete wall and connect decking rebar to pool for support. I don't like "floating" cement so I'm looking for best backfill setup for immediate patio.

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    Re: Pool backfill material and sequence

    Your decking has to "float" or it will crack at the bond beam.

    Here in NC, we use #57 washed stone (about 3/4 inch on average) as the best backfill. I wouldn't use the sand as it is easily washed away whereas the #57 will stay where you place it and it will not settle.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Pool backfill material and sequence

    Will the #57 crack or comprimise the pvc plumbing when tamped? I am using geotextile between layers to prevent washout and mixing of material. And what I meant by "floating" concrete was soil washed out from underneath near the overdig. But I think I understand, you mean cement base should not tie in to cement pool wall, correct? Thank u
    Al incam

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    Re: Pool backfill material and sequence

    There is no point in tamping it....it will not compact further.....that's why it makes a good backfill.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Pool backfill material and sequence

    Gotcha.... Even better

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    Re: Pool backfill material and sequence

    you mean cement base should not tie in to cement pool wall, correct?
    Yes, that's correct.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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