Concrete pool is uneven/sinking- polyfoam?

[Household6]

Anyone have experience in lifting a portion of their concrete pool? Not the deck around it, but the actual pool.

Water level difference between deep end and shallow end was about 3” when we bought 10+ years ago. Now it’s close to 9” difference. Noticing more cracks in the concrete patio surrounding the shallow end, so fairly certain it’s the shallow end sinking (versus the deep end popping up).

Pool is over 40 years old. Land is going to move. We live in the Sandhills of NC and near Ft. Bragg. Ground shakes from artillery training quite often.

So what do we do about it?

 

[trivetman]

Yikes! I’ll bump this one for you!

 

[ajw22]

The right fix is to punch some holes in the bottom of your pool and build piers for it to sit on. The piers set deep enough to sit on bedrock.

There was someone in Texas a few years ago with a long thread on their pool sinking and cracking who had this done. Pics from that thread are below.

Here are two pools that needed piers added…

Need urgent help with cracking/leaking pool on a hillside in Austin, TX!

Hello! I have a pool that is a little over 2 years old. It is on a hillside in Austin, TX so the back wall of the pool is about 13' tall. The front side meets up with our back patio and no wall was built on that side. The pool builder originally sprayed gunite on 3 walls with rebar (not the...

www.troublefreepool.com

My piering, retile (NPT Trident Tortoise), recope (flagstone), and replaster (QuartzScapes Super Blue Reflections) journey. Lots of pics.

-edit (Original Thread title was: Any Oklahomans on here? Need a suggestion for a reputable replaster, retile, and recoping contractor in the Tulsa area. (Pier pics inside!)) Hey TFP! Long story short my gunite pool has shifted a bit and it lead to cracks and leaks. Level Home Foundation...

www.troublefreepool.com

 

[Household6]

The right fix is to punch some holes in the bottom of your pool and build piers for it to sit on. The piers set deep enough to sit on bedrock.

There was someone in Texas a few years ago with a long thread on their pool sinking and cracking who had this done. Pics from that thread are below.

Here are two pools that needed piers added…

Need urgent help with cracking/leaking pool on a hillside in Austin, TX!

Hello! I have a pool that is a little over 2 years old. It is on a hillside in Austin, TX so the back wall of the pool is about 13' tall. The front side meets up with our back patio and no wall was built on that side. The pool builder originally sprayed gunite on 3 walls with rebar (not the...

www.troublefreepool.com

My piering, retile (NPT Trident Tortoise), recope (flagstone), and replaster (QuartzScapes Super Blue Reflections) journey. Lots of pics.

-edit (Original Thread title was: Any Oklahomans on here? Need a suggestion for a reputable replaster, retile, and recoping contractor in the Tulsa area. (Pier pics inside!)) Hey TFP! Long story short my gunite pool has shifted a bit and it lead to cracks and leaks. Level Home Foundation...

www.troublefreepool.com

The pool that provided the drawing of the piers . . . Refreshing to see a builder do what he should to make things right! I’d hire him any day of the week on character alone.

In the instance of both of these pools the beams added seem to merely support the pool where it lies, rather than push it back to its proper level.

One thing I’ve ran through my head is shaving down the concrete and essentially making a zero entry Baja shelf. Our Golden Retriever would certainly love it!

Other option would be to add concrete at a slow grade from deep end to shallow end.

In my head, if adding concrete was done then adding piers would be prudent to be able to maintain the new level. Whereas doing the gradual shaving concrete method would not require piers.

Thoughts?

 

[ajw22]

In the instance of both of these pools the beams added seem to merely support the pool where it lies, rather than push it back to its proper level.

The shell can be slowly jacked up while the piers are built.

One thing I’ve ran through my head is shaving down the concrete and essentially making a zero entry Baja shelf.

Shaving down the gunite will likely bring the rebar too close to the surface leading to rusting rebar stains. And I think it can compromise the structural integrity of the shell.

There will come a point where it will be more effective long term to just demo the existing shell and pour another one that is properly supported.