Intex Ultra Frame 16' x 48" build

[PoolDoc]

Thx.

[jab240]

Nothing but rain all week and progress is going slow. I was hoping to have the pool up this weekend but that's not going to happen. The rain will continue throughout the weekend. We had some heavy rain last night and this is what the dig site looked like this morning after about 2-3'' of water had been absorbed into the ground:

Maybe I should just turn this into an inground project . So how much bleach to clear up that water?

I think I'm pretty much level so my next step will be to lay out the foam. I read through a lot of builds and there are so many different ways to set up the base that have worked for people.

I think I've decided to go this way:
first layer - Landscape paper or tarp
second layer - 1" XPS foam
Then pool (maybe another tarp on foam)
Since this pool will only be used for 2 months max before coming down I was thinking I may be able to get away from using pavers. It seems just having the legs sit on the foam has worked for a lot of people especially where there is hard compacted ground in place, which I have (cement like clay). The only problem is, I don't know if I'll have enough foam outside of the pool's diameter to accommodate the legs. I know 8 4x8 sheets will be enough for the pool but does it give enough foam for the legs to move out a little? Any feedback from people that would know would be great.

[PoolDoc]

Be careful: putting foam or anything soft under a liner INCREASES the chance it will be punctured, since it enabled a sharp point to stretch, tension, and then pierce the liner

[jab240]

It will be extruded polystyrene insulation wall panels that many people use for intex pool bases. It's very strong and not exactly "soft" but still a touch softer than just ground. I haven't read anywhere yet where something got through this foam.

Here's a nice description of it:
"******* extruded polystyrene insulation is ideal for wall furring, perimeter/foundation, cavity wall, crawlspace, precast concrete, under slab, sheathing and other applications. ******** process technology makes the unique closed-cell structure of ****** insulation highly resistant to moisture, retaining its long-term R-value year after year, even following prolonged exposure to water leakage, humidity, condensation, groundwater and freeze/thaw cycling.

4' x 8' sheet
1" thick
R-5
High R-value (R-5 per inch of product thickness)
Compressive strength of 15 psi
Effective resistance against moisture, corrosion and rot
Lightweight, tough rigid foam panels are easy to handle and install
1" x 4' x 8' extruded polystyrene"

Not sure if I'm allowed to put specific product names out there so I used stars in their place.

[PoolDoc]

Putting a heavy poly tarp (black/silver type, rather than the blue) between the insulation and the pool will help.

If you to see what I mean, take a bit of the pool patch material, and set it against a wooden board, and try to poke a hole through it with a fork. Then, move it on top of a piece of your insulation and try again.

(As a rule, product names are fine, as long as you aren't selling something or ranting. )

[jab240]

I get what you're saying Poodoc. Thanks for the feedback . I don't see how much different it would be though from sticking a fork through the liner sitting on sand or bare soil and I've only read positive reviews about it so I think I will move forward with it but follow your suggestion about the tarp. thanks again

[PoolDoc]

I think you'll find that the sand or bare soil becomes a fairly sturdy surface after a few days of compression at almost 2 pounds per square inch (4' of water = 1.7 psi)