Burying new PVC lines

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M

MarD

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Apr 14, 2016
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What material should I use to backfill under and around new PVC pool lines? I was thinking sand for under and first 2-4" over lines, then dirt. Please advise.
If you recommend sand, what coarseness?
Thank you!pool lines Polaris line hole.jpgpool lines after Polaris line repair.jpgpool lines after Polaris line repair 2.jpgpool lines after Polaris line repair 3.jpg
 
Put gravel under the PVC lines to support them. Sand can wash out and leave the pipes unsupported and lead to cracks. Then clean fill on top of the lines.

@jimmythegreek what would you do?
 
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I Really Really hate to tell you this but it is better now than when it is buried... the wrong pipe elbows were used.. those are DWV pipe and it is used for NO Pressure plumbing like sewage...

What is DWV Pipe?

What is DWV PVC? Is it Different From Schedule 40? If you\'ve been in the market for PVC pipe and fittings you may have come across something called DWV. DWV parts look very similar to standard white schedule 40 PVC pipe and fittings. The only real difference is that DWV PVC is not made to...
www.pvcfittingsonline.com www.pvcfittingsonline.com

You want schedule 40 pipe that can be pressurized and not blow out... So every 45 and 90 will need to be changed in this setup... it looks like your adapters are also DWV so those will need to be changed also..
in Lowes it is at the other end where the DWV is located...
 
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Who did that plumbing?

Good spot by Casey. I would not bury DWV fittings. It is all explained in the article below...

PVC Repair - Further Reading

www.troublefreepool.com www.troublefreepool.com

Also why is flex PVC mixed in at the end?

What is the story here?
 
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ajw22 said:
Who did that plumbing?

Good spot by Casey. I would not bury DWV fittings. It is all explained in the article below...

PVC Repair - Further Reading

www.troublefreepool.com www.troublefreepool.com

Also why is flex PVC mixed in at the end?

What is the story here?
Click to expand...
I did the plumbing. I can't replace the old 1.5" flex plumbing because it's close to the pool and buried under pavers. I converted to 2" schedule 40 PVC.
 
You cant bury that it Will fail with any movement. Every fitting I see in pic is dwv not sched 40. I've ripped out plenty of leaking dwv dont do it. Processed gravel to get close then concrete sand or stone dust around and over pipes. You dont want clean gravel in trenches needs to have mixed fines
 
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Charlotte makes any of them. Just use a 1.5" bushing in a 2" coupling, keep it simple. If u have a lowes nearby they usually stock a good supply of sched40 fittings. Also anyplace that deals with well pumps/septics or pools
 
jimmythegreek said:
You cant bury that it Will fail with any movement. Every fitting I see in pic is dwv not sched 40. I've ripped out plenty of leaking dwv dont do it. Processed gravel to get close then concrete sand or stone dust around and over pipes. You dont want clean gravel in trenches needs to have mixed fines
Click to expand...
Will these work? Or should I get pea gravel instead of All-Purpose gravel?
Thanks!
 

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Just get bags of paver base. Has rocks amd fines mixed in together. I never use gravel in trenches, the voids cam hold water amd freeze if your in a frost climate. Would be cheaper to have a landscape place drop a yard of bulk road base or paver base if you need more than 10 bags
 
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jimmythegreek said:
Yup. Like I said I don't know how big an area you have but bags dont go very far. Road base from landscape supply is 30 bucks a yard max and is 27 cubic feet
Click to expand...
Should I pour Paver Base up to the bottom of PVC lines (or halfway up lines) and then cover with several inches of sand and top layer can be existing or new soil?
Pavers will be reinstalled over some of the lines. The top layer over the lines along my fence will be top soil. Thanks!
 
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I'd go right over amd right to the top with it wherever pavers will be. I never use soil to replace excavated areas, asking for trouble with that. It's fine to use sand around the pipes, but you want course sand. Either concrete sand or stone dust is what i use. I have many times just used paver base just careful to pick sandier areas out of the piles for pipe areas amd leave the rockier stuff for general base fill.
 
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