Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 2 of 2

Thread: Calculating volume of an oval pool? I'm deeply confused now

  1. Back To Top    #1

    Join Date
    May 2009
    Location
    Louisa, VA
    Posts
    6

    Calculating volume of an oval pool? I'm deeply confused now

    Okay, so I have an 18x34x4 foot oval pool.

    PoolCalculator.com tells me that this pool holds 16,200 gallons of water.

    The back of the pool chemical bottles and most online calculators tell me it holds 14,387 gallons of water.

    Now... maybe I'm doing this all wrong, but my OWN calculations tell me that PoolCalculator.com is right, and that most of the websites out there are dead wrong. Anybody care to comment on WHY the "standard" formula is off by close to 2000 gallons? If anything, I would expect the chemical companies to exaggerate the volume of pools (thereby selling more chemical)

    Thanks,

    Patrick
    18x34 AG pool. 150lb. WaterCo Sand filter (2hp pump). Chlorease Chlorine generator.

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: Calculating volume of an oval pool? I'm deeply confused now

    There are two definitions of an oval, the mathematical definition, and the pool definition. A mathematical oval is like a circle that has been stretched, while a pool oval is a rectangle with half round end caps. If you use the mathematical definition of an oval you get the volume that those other calculators are giving you.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •