pool foundation 2

[Dave N]

I had a foundation prescription done for a house that concluded the serviceability allowance would be 100kpa.
Built the house with 2' footings and now want to put a pool in.
Question is ..any reason why this same ground would not support a 14x28 pool?
thanks

 

[oldestguy]

Assuming most of the pool volume would require an excavated area, you basically would be applying little or maybe less load. This also would apply if the pool is in a basement that earlier had soil excavated for that purposes.

 

[Mad Mike]

Perhaps- if your property is on sloping ground, be careful if your pool straddles the cut and filled portions; be similarly careful if it is in proximity to retaining structures...I've seen many fancy pools constructed under assumptions of bearing capacity that don't account for the dynamics of the site- viz., ground changing from "cut" to "fill" etc.- most times these are insurance claims that can't be rectified without considerable cost and stress.

Otherwise, what oldestguy said and make sure you know where the groundwater is!

Cheers,
Mike

 

[PEinc]

Don't undermine nearby house foundations if you are digging deeper for the pool.

http://www.PeirceEngineering.com

 

[Dave N]

Thank You all
Mad Mike ...my site is all cut with a 5' retaining wall behind pool ...is the concern with sloping ground that it is more likely to shift or drainage or?

 

[EireChch]

As PEinc said, undermining is an issue. Make sure your pool is sufficiently far the retaining wall that it does not reduce your passive resistance.

If it is inside the passive wedge you will need to install some type of retaining before educating. Sheet piles, or maybe a secant piled wall. You could shotcrete the face to provide your pool wall.

 

[PEinc]

This is a thread that could benefit greatly with a sketch from Dave N of the proposed pool location, the house, and the 5' retaining wall.

http://www.PeirceEngineering.com

 

[Okiryu]

Did the geotechnical borings covered to the depth of the bottom of the pool? Agree with PEinc, a sketch will be helpful. Perhaps you will need to check for slope stability as well.