What to backfill with?

Haulinbass02

Active member
Oct 19, 2010
39
Parker County, Texas
We are having a new pool Installed in a hole I had dug last year.....it will be 20ish inches deep. The pool bottom is down to the clay layer. There is roughly 18” of sandy loam on top of the clay in my yard.
I was going to backfill with gravel and a custom drain to prevent any ponding around the pool below ground. I then began reading in earnest and it seems that gravel is not a proper backfill for an AGP installed below grade. I’m not even sure now if I even need to make a French drain around the pool.
I’m thinking now that I will backfill with select fill to within 1-2” of grade (I already used the old dirt to level lots of areas on the property). Then I can put in a 4” layer of gravel around the perimeter within a landscape rock border to keep the splash over (you don’t know my kids) from creating a muddy mess around the pool. I might do a small drain within that gravel border.
Thoughts?
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
26,222
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
I am not sue what you are doing but an AGP footers need to be placed on undisturbed ground. Any filled ground will settle from the weight of the water and the pool will get off level.

Then you can backfill around the pool. But if the pool is not rated for burial any fill ont he sides of the pool will likely accelerate rusting.
 

Haulinbass02

Active member
Oct 19, 2010
39
Parker County, Texas
The pool is rated for up to 24”. The ground that I have dug down to is Undisturbed clay. It has been that way for a year and has packed down and settled in so it is good and hard. My main concern is what should I backfill around the pool with. I’m looking into a slurry as my ground is normally sandy loam and not all that stable.
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
26,222
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
Why a slurry?
 

scout123

Bronze Supporter
Feb 18, 2018
430
Northwest GA
The couple of semi inground pools I looked at call for a clean, compacted, granular material for backfill. It's suggested you shape a 4" cove so that water flows away from pool wall. I think I saw some doughboys that call for a slurry mix. I think the key is something that will compact and hold shape for future liner changes. You also don't want water to accumulate against the pool.
 

Haulinbass02

Active member
Oct 19, 2010
39
Parker County, Texas
This is what is a little concerning to me. Since mine is in a hole, I’m wondering if a complete French drain type thing is necessary all the way around it? Or if I build a slurry cove around it then backfill with select fill mixed with decomposed granite or gravel?
 
Thread Status
Hello , There was no answer in this thread for more than 60 days.
It can take a long time to get an up-to-date response or contact with relevant users.