foundation requirement for swimming pool
foundation requirement for swimming pool
(OP)
The client wants to install a swimming pool in the backyard 20'*36'*8'deep. From geotechnical perspective, what should I look at for recommendations.
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foundation requirement for swimming pool
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foundation requirement for swimming poolfoundation requirement for swimming pool(OP)
The client wants to install a swimming pool in the backyard 20'*36'*8'deep. From geotechnical perspective, what should I look at for recommendations.
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RE: foundation requirement for swimming pool
1)Bearing support; in this case the swimming pool would be similar to a slab-on-grade;
2)Earth pressure coefficients for design of the below-grade walls;
3)Groundwater considerations, if applicable;
4)Difficult excavation considerations, if applicable;
5)Temporary slopes during construction and protecting adjacent structures depending on their location relative to the pool construction; and
6)Fill placement criteria.
If the existing site conditions allow, I would perform a couple of soil test borings to analyze the subsurface conditions. Laboratory testing as you see fit.
I hope this helps.
RE: foundation requirement for swimming pool
Also that the weight of material excavated will be roughly twice that of the water filling the void, so you may get an overall unloading condition depending on the weight of the concrete etc in the pool.
RE: foundation requirement for swimming pool
Concrete pools by their nature need to be constructed to resist cracking, i.e. leaking. Most notably the walls need to be designed to resist the lateral earth pressures an suitably reinforced to prevent cracking. Bouyancy of the pool is also a potential problem, although usually only if the groundwater table is near or above the bottom of the pool. The provision of a drain in the bottom of the pool can effectively deal with this.
Bearing is not really an issue for either type of pool, assuming it is an inground pool. The weight of soil removed is almost twice the weight of water in the pool so the load on the soil is in effect reduced. Of course if the pool is to be constructed in an area of poor fill, organic soils, etc. then some additional support may be need.
RE: foundation requirement for swimming pool
Thank you very much!
It is a vinyl liner pool. Do you have any references regarding vinyl liner pool?
RE: foundation requirement for swimming pool
I spent a summer in university installing inground pools so have a good first hand knowledge of how they go together. As a geotechnical engineer I have been involved with several swimming pools, however almosts always in the context of slope stability analysis (i.e. pool being constructed on top of a slope). As I noted before there is not usually a need for detailed geotechnical comment on a typical inground vinyl pool. The only exceptions would be if the ground conditions are very poor, adjacent structures that could be effected (undermined) by the excavation, or slope stability concerns.
If poor soil is an issue then supplemental support sould be provided with any number of ground improvement methods. However it would need to be pretty bad soil as the net effect of installing a pool is to reduce the loading on the soil. I suppose if you had a depth of fill greater than the depth of the pool that has been recently placed, or placed without any compaction, then there could be a concern over settlement under the weight of water.
Hope this helps.