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

Thread: help with decision on excavation error

  1. Back To Top    #1

    help with decision on excavation error

    Hello all-
    I am totally frustrated at this point. I thought I had it all planned out but problems keeping throwing me for a loop.....

    As i mentioned in an earlier post, my excavator over dug my hole pretty good. My side walls going into the hopper should be at a 4ft slope but appears to be more like a 3ft slope. I am short about 16 inches on one wall and 6-8 inches on another. Also, the 14 ft slope going from the shallow side to the deep end is about 12 inches too deep.

    My dilemma:

    #1- I am thinking i will need 4-5 tons of #57 gravel to fix the bottom. I can pour the rocks on the base/floor to raise the floor where it should be and portland cement over the gravel. This is going to cost me a couple hundred bucks for the gravel but ok. Thats one issue resolved unless someone thinks that i may be better with something else.

    #2- My side walls obviously cant be built up with the gravel. I was considering concreting them to where they need to be but my goodness that is kind of pricey. I also am not a concrete professional and may need to hire someone.

    Possible solution:
    I was considering packing everything up with the clay that has been removed and renting a compactor to get it down good and firm. I am well above any water table. I was also going to run a "french drain" ring around the pool so just in case i would never have to worry about water getting behind my walls. We have hard red clay here in Georgia so maybe it would be okay??? I was thinking I tamp the walls down and portland cement with sand over the hard packed clay dirt. I know this is not typically considered a great idea but will it work for a few years? i will be in a much better financial place then and would not mind hiring someone at that point to correct it if it need be.
    I have talked to several people in the pool business here locally and several have told me that they would just fill up the overdig including the walls with the original dirt and tamp it down good, then portland/sand cement 2 inches over that.

    Otherwise i'm looking at spending 1500 and up on materials. Doesnt sound like much but after putting out 16000.00 cash, its starting to hurt me lol. For that i may as well buy another liner and have them custom make it. If I can use just dirt and compact it, i will be thrilled.
    I guess im trying to determine if doing this will be catastrophic, or just "frowned" upon but will work for several years.

    On a side note, the last picture is an original fireplace to a home that was on this land. It has been traced back to roughly 1840. I was planning on incorporating it into my pool patio with Flagstone pavers. The fireplace has recently lost a few rocks from its side- i think due to excavation. Can i just pour some concrete with rebar to reinforce it? any opinions?

    I also want to once again say thanks to all that have helped me so far and I just hope I can help others when I am finished. I see many people on here during their free time helping with our projects and i feel somewhat guilty just asking for help over and over.




    18x36 Kafco steel wall Vinyl liner pool.21,000 Gallons 8ft deep. Pentair 420 cartridge filter, Intelliflow pump, Pentair IC40 salt water generator with Easytouch control system. 2 skimmers, 2 returns

  2. Back To Top    #2

    Re: help with decision on excavation error

    Hello bb2sbgn,
    I am nowhere near the authority on problems like yours but I'd like to throw out a couple of ideas....

    I'm assuming you can't (or don't care to) lower the entire pool at least enough to set the walls on solid ground?

    If it were me I would;
    A) build some stout form boards (2x6's) just inside the walls, level and plumb the walls with more blocks, rebar, anchors, etc. I would then pour the footing collar thick enough to support the walls from the solid earth up to 4 inches behind the walls . This should give your walls great support and not cost too much more for a yard or two more concrete. (We just bought it in Fayetteville for 88/yd).
    B) I think your idea about mechanically tamping and compacting the pool floor with that good Georgia clay should be fine.
    For the hopper side walls, I have heard, you can use 57 stone, or sand to build up the low areas.

    Some experts might recommend a custom liner instead?

    I'm no help on the fireplace, except I think it is a neat piece of history, I would sure try to preserve it.

    Best of luck,
    "Experience is what you get, just after you needed it."

    Owner DIY build, steel/liner kit, 18x36 Deer Creek, sport depth, approx 17,500 gal,
    Aqua Plus SWG, 1 1/2 hp, 2 speed, 300# sand filter and twin Color logic 4.0s, MX-8 Cleaner.
    My DIY Pool Build

Posting Permissions

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