SRW adjacent to pool

[BurgoEng]

The situation I have is as follows. I have a 3.5ft-4ft segmental block wall located about 4ft-6ft from a proposed swimming pool. The pool will be buried 4 ft into the ground (assuming sticking out anohter 4ft for a total 8ft depth of water). How do I account for the load of the pool onto the wall? (rough sketch below)

Do I...
...take the weight of the water at the bottom of the pool, distribute the stress at a 45deg angle and show that the weight does not influence the wall?
...need to account for the lateral pressure of the water onto my wall somehow?
...consider the pool to be a surcharge load of 63pcf x 4ft(above grade) at the surface, located 4-6ft from the wall?
...assume the pool structure will self support itself and not transfer load to the soil?
_
||
_ grd ||
SRW--> //---------|| pool
// 4-6ft ||
grade // ||
---------// ||____________

 

[BurgoEng]

||
_ grd ||
SRW--> //--------|| pool
// 4-6ft ||
grade // ||
---------// ||____________

 

[Panars]

Is the pool round or an aboveground pool that you are partially burying? If the pool can stand by itself, then no water pressure is transmitted to the soil.

If the wall and berm are required to support the sides of the pool, then the berm has to be sized to provide the support. It wouldn't be an issue of the load being applied to the wall, so much as the berm being wide enough and high enough.

 

[BurgoEng]

At this stage, it is a site plan with a "proposed future pool" which is shown as rectangular, and 4 ft deep. I would be say it's either going to be a half-buried above ground or a pool that starts out as 4ft, but slopes to 8ft for diving.

So for the berm being big enough, does that mean that the weight of the soil outside the wall is enough to resist the lateral force the pool would exert? So that soil would be providing passive resistance to the water's active force? kinda makes sense now that I type it out.

 

[oldestguy]

I'd specify that the pool must be an intact vessel that applies no pressure to the earth outside it other than vertically downward under it.

Otherwise, this sure looks like a loser and any cracks in the lining, such aswith a gunited pool, are likely to cause the earth berm to collapse. Splashing of water outside also can weaken the earth berm's shear strength, so you have to look at that future situation just for the berm..

If it is not a structural vessel, walk away from it.

Water's active, passive and at rest pressures are all the same, the hydrostatic pressure.

 

[DRC1]

If your wall is 4 ft high and the ool is 4-6 ft away, You are probably not going to get a lot of load from the pool.
However, because no one ever does what they are supposed to do and things never happen the way you plan, I would backfill at least 3 feet behind the wall with crushed stone. It will give you good lateral strength and good drainage should anythng leak.

 

[BurgoEng]

thanks for the advice, all.