Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 12 of 12

Thread: Pool bottom springy

  1. Back To Top    #1
    ka8yiu's Avatar
    Join Date
    Aug 2016
    Location
    SW FL
    Posts
    92

    Pool bottom springy

    We have had a lot of rain the last month to 6 weeks. Last night was no exception. My lanai and pool both borderline flooded.

    After cleaning and re-testing chems, I decide to cool off in the pool. I take about two steps, and I feel the bottom giving a little, almost like a spring board.

    Any thoughts if this could this just be the elevated water levels underground from the torrential rains we have been experiencing?
    8K gal IG Fiberglass (San Juan Waikiki I)
    TF-100 Testing Kit
    Hayward Max-Flo VS Pump
    Hayward Star Clear Plus Cartridge Filter
    Pentair Model 320 Automatic Chlorine/Bromine In-Line Feeder

  2. Back To Top    #2
    Mod Squad Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    12,906

    Re: Pool bottom springy

    Do you happen to recall what was used for your base (pea gravel, sand?). If it was sand, it almost sounds like perhaps some of it settled leaving a small void in that area where the shell is flexing. Shouldn't be a concern unless the "giving" spreads more or you begin to see any changes in the shell itself (i.e. hairline cracks). Those shells are quite durable. Your water table could be influencing the base from underneath and/or perhaps some surface water seepage has traveled down along the pool sides causing it to settle more after initial construction. I know mine settled just a tiny bit.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  3. Back To Top    #3
    ka8yiu's Avatar
    Join Date
    Aug 2016
    Location
    SW FL
    Posts
    92

    Re: Pool bottom springy

    We just bought this house in May, so I have no idea about the construction.

    I've "closed" the pool for a couple of days to allow the water to settle, then I'll check it again. Tnx
    8K gal IG Fiberglass (San Juan Waikiki I)
    TF-100 Testing Kit
    Hayward Max-Flo VS Pump
    Hayward Star Clear Plus Cartridge Filter
    Pentair Model 320 Automatic Chlorine/Bromine In-Line Feeder

  4. Back To Top    #4
    ka8yiu's Avatar
    Join Date
    Aug 2016
    Location
    SW FL
    Posts
    92

    Re: Pool bottom springy

    Traveling down the pool sides is also possible. The water has reached the coping and beyond.
    8K gal IG Fiberglass (San Juan Waikiki I)
    TF-100 Testing Kit
    Hayward Max-Flo VS Pump
    Hayward Star Clear Plus Cartridge Filter
    Pentair Model 320 Automatic Chlorine/Bromine In-Line Feeder

  5. Back To Top    #5
    ka8yiu's Avatar
    Join Date
    Aug 2016
    Location
    SW FL
    Posts
    92

    Re: Pool bottom springy

    I just got in the pool to test that bottom give. It seemed solid and stable.

    I'm guessing the water table and/or some water getting up to the coping and running down the outside was just below the pool. All seems fine.
    8K gal IG Fiberglass (San Juan Waikiki I)
    TF-100 Testing Kit
    Hayward Max-Flo VS Pump
    Hayward Star Clear Plus Cartridge Filter
    Pentair Model 320 Automatic Chlorine/Bromine In-Line Feeder

  6. Back To Top    #6

    In the Industry

    ps0303's Avatar
    Join Date
    Jul 2011
    Location
    FL
    Posts
    3,357

    Re: Pool bottom springy

    I see in your signature that it's an in-ground fiberglass pool. That thing should be solid.
    Paul
    http://www.gastekservices.com A word of caution: When working with gas and electrical you might want to consider a licensed contractor. Consider the value of your life and others around you. If you would like to provide a review of the help I provided, please use the following link to leave a review. gastek - Google Search,

  7. Back To Top    #7
    ka8yiu's Avatar
    Join Date
    Aug 2016
    Location
    SW FL
    Posts
    92

    Re: Pool bottom springy

    I know this is an old thread of mine, but my pool bottom spring board happened again.

    Friday-Monday we had a total rainfall of >9 inches. My wife just told me that she felt a little "squishiness" in the same spot that I did last year.

    I just hope there is not a catastrophic failure of the pool someday!
    8K gal IG Fiberglass (San Juan Waikiki I)
    TF-100 Testing Kit
    Hayward Max-Flo VS Pump
    Hayward Star Clear Plus Cartridge Filter
    Pentair Model 320 Automatic Chlorine/Bromine In-Line Feeder

  8. Back To Top    #8

    Re: Pool bottom springy

    Do you have a well point? Sounds like u need to hook up a pump to the well point to suck the ground water out.


  9. Back To Top    #9
    ka8yiu's Avatar
    Join Date
    Aug 2016
    Location
    SW FL
    Posts
    92

    Re: Pool bottom springy

    Nope, no well point.
    8K gal IG Fiberglass (San Juan Waikiki I)
    TF-100 Testing Kit
    Hayward Max-Flo VS Pump
    Hayward Star Clear Plus Cartridge Filter
    Pentair Model 320 Automatic Chlorine/Bromine In-Line Feeder

  10. Back To Top    #10

    Join Date
    Feb 2017
    Location
    Ohio
    Posts
    169

    Re: Pool bottom springy

    I believe it was common practice to use sand for the base of a FG pool. Problems with this caused the use of crushed limestone. Sand in water will get jelly like and shift, won't stay solid like limestone. Hope it works out for you.
    Rick, Fiberglass.....14 x 30 Viking Laguna - 10,000 gal. Pentair cartridge filter, gas heater, Swg, variable speed pump, Easytouch control system.
    k2006c, k1766

  11. Back To Top    #11
    ka8yiu's Avatar
    Join Date
    Aug 2016
    Location
    SW FL
    Posts
    92

    Re: Pool bottom springy

    Last year, I just "closed" the pool for a couple of days and never felt it again. I guess I'll just have to wait and let the water table lower back to normal.
    8K gal IG Fiberglass (San Juan Waikiki I)
    TF-100 Testing Kit
    Hayward Max-Flo VS Pump
    Hayward Star Clear Plus Cartridge Filter
    Pentair Model 320 Automatic Chlorine/Bromine In-Line Feeder

  12. Back To Top    #12

    Re: Pool bottom springy

    I would consider a well point. Interesting about the FG under layment !


Posting Permissions

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