Pool on Pool Build -

[brunotg]

Hi everyone,

I've decided to rebuild the pool, as i mentioned in other thread i had a crack and after fixing, it keep cracking more and it seems that the now removing the whole plaster and reinforcing cracks is the way to go. I've brought in a soil guy who did not recommend any specific soil analysis. I've also brought multiple pool builders and they did not think soil analysis was going to guide any of their work.

The pool has 45 years and the plaster was redone about 15 years ago (i bought the house about 2 years ago). Because of the old design, the deep end of the pool is 9 ft, while the shallow end is 3 ft. I've decided that shallowing the deep end to 6ft is a good idea as it will help to heat the pool.

When i asked about shallowing the deep end to the pool builder, and after looking at costs, he is suggesting that we build a pool inside the pool, this is so we future proof the pool from possible cracks. This will take off about 7 inches around the pool. The issue is that the number of cracks after removing the plaster is unknown, if we find more than the ones that we know off, we may end up with an expense that will bring us close to just building a pool inside a pool.

i'm not a big fan making the pool smaller and i cannot find any information about building a pool inside a pool. Is this a sound idea that will for prevent future cracks within the next 15 years with more certainty other than just finding and fixing existing cracks with gunite?

 

[AQUA~HOLICS]

So your PB wants to build a pool inside a pool that is cracking/moving on unstable ground?
A permanent solution would be to remove the entire existing pool and start from undisturbed soil and build up in specific tiers to insure proper compaction.

 

[brunotg]

So your PB wants to build a pool inside a pool that is cracking/moving on unstable ground?
A permanent solution would be to remove the entire existing pool and start from undisturbed soil and build up in specific tiers to insure proper compaction.

thanks! yes. For the PB, its an easier job to just throw the new pool on top of the existing one as there is no plaster removal involved.

the soil engineer mentioned that the ground seems to be solid and the cracking is part of the the age of the construction. He did not attempt to offer a proper soil study.

I'm thinking on bring a structural engineer to evaluate the proposal from the PB.

by removing the entire pool , do you mean removing the structure? the initial plan was to remove existing plaster, find more cracks under the plaster, reinforce them with rebar and apply gunite. the pool on pool plan came after i requested to shallow the deep end.

Thanks!

 

[AQUA~HOLICS]

Not having a soils engineer/steel engineer report on why the original shell is cracked and building on top of that soil is not in your best interest. Seems to be solid and the cracking is part of the age of the construction? Both remarks make no sense to me.
Yes removing the shell that the second pool would be supported by needs to be completely removed in order to insure its stabilization.