Building above ground(basement) pool

[Alphaman]

Hi to all at TFP!

I am presently building an elevated(suspended) pool from the basement upwards in the
centre of a "Courtyard House" , (also under construction),so that the overflow edge is leveled with the
courtyard flooring at Ground floor.

This is an overflow type pool with channels around three sides (see pics attached)
Pool Specs;
The deep end is 1.65m(5'-5") deep and the shallow end 1.0m(3'-4").
The inside dimensions of pool is :6.92m(22'-9") x 3.40m (11'-2")
Volume of water in pool : 38 yds3

Now, from readings in this and other forums, they are talking about an additional "Compensation Tank"???

What is this and where does it need to be situated and what size for this pool volume and the pipework.
We have not made provision for this and we are casting the pool floor slab at the moment so can this "compensation tank' be a PVC tank situated nearby the pool to empty into??

Please, can someone just give me some pointers as to:

- Number of inlets to pool and their positions
- Type and capacity of pump
- Filters
-Water treatment
-Pipes sizing
-Pool drain and size

I am going for a PVC pool liner at the moment. Someone I know is suggesting "fibre Glass Coating" as pool finishing???

Im struggling at the moment as I realized this is more complicated than I imagined.

There are no pool specialist where I live so I am putting together the bits as I go along.


Please any advice/help I can get would be very welcome !

 

[Jimrahbe]

Re: Building above ground(basement) pool

am,

I can't help with your question, but your non-overflow edge can't be at the same level as the overflow edge, which is what is shown in your pic...

I'll let some of our experts answer your compensation tank question..

Thanks,

Jim R.


I merged threads. Marty - TFP Mod

 

[PoolGate]

Re: Building above ground(basement) pool

"Compensation tank" sounds to me like what we call in the aquarium world as a "surge tank". It holds water to be dumped into another area so that the overall water level doesn't change. I don't think you need one with your vanishing edge pool. Who designed your pool was it a structural engineer? A pool on supports can be quite dangerous with the weights involved and I would want a competent structural engineer to bless everything including the substrate and piers that the pool will be sitting on. Do you not do cement/gunite inground pools there?

 

[kimkats]

Re: Building above ground(basement) pool

Ummmmmmm am I seeing what I think I am seeing? You are hoping to hold this whole pool up with piers? I don't see this happening and lasting when you start adding water. Now I am no engineer but have a pretty good grasp on how much water weighs and what kind of support it needs. One case in point is there is one pool here where they did not engineer the outside wall properly and it is trying to fall away from the rest of the pool as seen by the crack all along the bottom of the wall where it is separation from the floor of the pool. This started to happen as the pool was being filled with water.

 

[Alphaman]

Re: Building above ground(basement) pool

Hi,

Thanks for the advice.

I must mention that the pics were early in the design process.
The pools being built from a clear basement floor up.
Yes, there is a Structural Engineer onboard and the pool is not only going to
be supported by those piers. There are peripheral down stand and cross beams 1'-8" in depth all
the way round the pool floor, which sits on a compacted infill enclosed by concrete blocks between the piers. The retaining wall is of course separated from the pool structure!!

What I need are pool equipments right now!!

 

[PoolGate]

Re: Building above ground(basement) pool

Hi,

Thanks for the advice.

I must mention that the pics were early in the design process.
The pools being built from a clear basement floor up.
Yes, there is a Structural Engineer onboard and the pool is not only going to
be supported by those piers. There are peripheral down stand and cross beams 1'-8" in depth all
the way round the pool floor, which sits on a compacted infill enclosed by concrete blocks between the piers. The retaining wall is of course separated from the pool structure!!

What I need are pool equipments right now!!

What can you get there? You need a variable speed "2-3 HP" pump, filter (cartridge/sand/DE), heater (gas/electric), saltwater chlorine generator (sized 2x-3x pool volume), lights (LED), water features (sheer descent, bubblers), automation (if desired), pool valves (neverlube), 2 skimmers, 2-4 returns, dual safety drain, 2 1/2" PVC plumbing .

I suggest pick a brand and stick with that brand for all components.

Here is one maker: https://www.jandy.com/en

Here is my equipment pad for a general idea.

 

[Alphaman]

Re: Building above ground(basement) pool

Wow!

Thanks for the info.

As I mentioned, the bathing surface of this pool will sit at the courtyard level at ground floor of a Courtyard House, also under construction.
So, the entire structure of the pool will be at a clear basement level(not in ground).

I will have channels going round three sides(Perimeter Overflow) to collect water overflowing from the pool surface and returning to the pump.

From what I've been reading, they must have holding tanks strategically placed at a remote location. These tanks are called surge tanks. Their size has to be precisely calculated to provide enough water to raise the pools water to a food level and be able to continue the fooding process until the water is returned to the surge tank.

Do I need this for this small size pool and if so , what is the size of this surge tank and what equipment do i need???

Thanks very much for your help!!

 

[ajw22]

Re: Building above ground(basement) pool

Wow!

Thanks for the info.

As I mentioned, the bathing surface of this pool will sit at the courtyard level at ground floor of a Courtyard House, also under construction.
So, the entire structure of the pool will be at a clear basement level(not in ground).

I will have channels going round three sides(Perimeter Overflow) to collect water overflowing from the pool surface and returning to the pump.

From what I've been reading, they must have holding tanks strategically placed at a remote location. These tanks are called surge tanks. Their size has to be precisely calculated to provide enough water to raise the pools water to a food level and be able to continue the fooding process until the water is returned to the surge tank.

Do I need this for this small size pool and if so , what is the size of this surge tank and what equipment do i need???

Thanks very much for your help!!

Where did you read that? Not here.

 

[Alphaman]

Re: Building above ground(basement) pool

Hi again,

No, not from this forum but from a Google search.

So i don't need it, right??

- - - Updated - - -

Is there someone in this forum who have built a similar pool??

 

[ajw22]

Re: Building above ground(basement) pool

Hi again,

No, not from this forum but from a Google search.

So i don't need it, right??

Not seeing the source or context i am not sure what they are talking about.

 

[bmoreswim]

This link doesn't specifically discuss that remote tank you are looking for comments on (that I saw) though it does provide some detailed insight to the build aspects of a similar pool. I think the key is that if you just had channels that funneled the water back the pool, if there was someone doing a cannonball for example, and a large volume of water was moved out of the pool body to the gutters, they could become overwhelmed and overflow, thus losing your water. The surge tank concept allows a space for that water to go and not be lost while the pumps are pulling from it to refill/overflow the pool constantly. In my mind, such a tank would be a requirement, with the key being that it was big enough (too big would be ok), but not too small, no different from a how a standard zero edge pool works. Though I have no idea/knowledge on how to specify one.

https://www.poolspanews.com/how-to/design-construction/integrating-pool-perimeter-overflow-edge-techniques_o?o=0

 

[Alphaman]

Ok, Thanks!

 

[jatkinson]

That thing needs to be stainless steel. Your concrete is going to weigh A LOT! Never mind the water weight, that's nothing compared to what it's going to take to support a liner.