Black pipe underground
#1
05-26-08, 02:47 PM
Black pipe underground
Four years ago I put black pipe undeground now it has started leaking. The house where I used to live had black pipe underground for over 40 yrs, with no leaks. What could be the cause? I bought the pipe at Home Depot, the salesman told me it would be good for yrs.
#2
05-26-08, 06:00 PM
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are you talking black iron pipe, if so the soil where you live may be more acidic, than where you used to live, also the water table could be higher in your new place, I always use pipe wrape tape if installing steel pipe under ground here in ok because the red clay is acidic.
life begins when the kids leave home and the dog dies.
life begins when the kids leave home and the dog dies.
#3
05-28-08, 11:31 AM
You should never use uncoated black or galvanized pipe for underground gas piping! There is no code that I know of that allows it, only factory coated steel or bare copper can be installed.
#4
05-29-08, 06:18 AM
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Hi, are we talking about black poly pipe, like the pipe used for well offset lines?
Black poly comes in different grades/thicknesses. I think it is 100lb and 200lb pipe. Don't quote me, it's been a while since I bought any.
Unless you make sure to backfill the pipe with a good sand base and cover, I would definitely use 200lb. pipe.
If you use the thinner pipe, and you just used normal fill, you could get a small rock against the pipe and through expansion and contraction caused the rock to penetrate the pipe.
Also how do you know it is the pipe? could it be a fitting? Has anyone driven over that area? Could the pipe have frozen and burst?
Black poly comes in different grades/thicknesses. I think it is 100lb and 200lb pipe. Don't quote me, it's been a while since I bought any.
Unless you make sure to backfill the pipe with a good sand base and cover, I would definitely use 200lb. pipe.
If you use the thinner pipe, and you just used normal fill, you could get a small rock against the pipe and through expansion and contraction caused the rock to penetrate the pipe.
Also how do you know it is the pipe? could it be a fitting? Has anyone driven over that area? Could the pipe have frozen and burst?
#5
05-29-08, 10:46 AM
I didn't consider plastic pipe. It is allowed according to code, however it needs to be installed per manufacturer's instructions. Typically this means that the person installing it also needs to be certified by the manufacturer to do so. Usually it is not worth the bother for just one installation.
#6
05-29-08, 12:00 PM
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