O/T Buried Natural Gas Line?

Genos · Feb 19, 2012

Can you bury the stainless gas line that 's wrapped in yellow plastic? need to run gas line to shop, see Menard's has this, need to go 100 ft. how deep does gas line need to be buried?
Thanks

JDseller · Feb 19, 2012

The local Coop has been using the same thing only orange for propane. They installed a tank for a friend while we where hauling corn for him. The Coop guys just vi-bra plowed it in the ground. I would say it was not more than 18 inch in the ground.

I have hand dug them in and I never put them more than 12 inched in the ground if there was not traffic over the line. IF going under a driveway I then put them down to three feet. It would surprise you how deep rocks can get pushed.

VicS · Feb 19, 2012

I think black pipe is code. It is the cheapest. They never put it in over 2 ft. deep. Vic

Spook · Feb 19, 2012

Mine is plastic from the tank to the house. It's buried maybe a foot deep.

Dean Olson · Feb 19, 2012

Not rated for direct bury.

We do put it in a 3"pvc conduit and run it to cooktops in kitchen islands in a new construction scenario. I suspect that it would get way too expensive compared to plastic. I suspect you'll need an 1 1/4" or larger line depending on your BTU loading.

I would run the yellow poly plastic gas line with a tracer wire and teflon coated risers on each end. That needs to be buried at least 18" Probably the easiest,cheapest, and most reliable as you only have 2 joints underground.

You can use a teflon coated steel pipe that can be buried 12". You need to use galvanized fittings and field coat/wrap the joints. More expensive and more labor intensive than the plastic.

Dean Olson · Feb 19, 2012

My previous post I was thinking natural gas.

If your using propane I would run 1/2" L soft copper. We are required to put it 18" deep and in PVC conduit under a traffic area. Flare fitting on the joints.

If you direct bury black pipe you'll be replacing it in less than a year.

I did a long propane run, 250', and used 3/4" poly with tracer and teflon riser on both ends. Cheaper that copper for that distance.

Stephen Newell · Feb 20, 2012

I think you should contact your gas company for that information. The type of installation may vary depending on the region you live in. If you are not wanting the gas company to know about it you might be able to get some literature where they issue building permits for specifications.

ohiojim · Feb 20, 2012

no matter what you run it is always smart to run it in a conduit,....if replacement becomes an issue you just pull and replace with no more digging the place up

TonyIN · Feb 20, 2012

I doubt that is rated for direct burial - check the manufacturer"s specs on that.
Either way, I second the conduit. Another good practice is to bed the conduit or pipe in sand or round pea gravel. Cover the top with it too and lay some caution tape on it before the final few inches of topsoil. One day down the road, you or the next owner will thank you for it.

MarkB_MI · Feb 20, 2012

I was thinking of using this stuff (CSST) for a gas line in my shop, so I looked it. According to the manufacturer:

"For underground burial and embedded in concrete, (CSST) flexible gas piping must be
routed within a non-metallic, water tight conduit. No mechanical joint fittings are permitted within the conduit."

What I'll probably do is have the local gas company make me up a plastic line, and do direct burial two feet deep. I ran black pipe when I needed to run a line around my house to get gas into the kitchen, but I realize now that it will have a finite lifespan and it was a lot of expense and aggravation to install. (The black pipe has been in for over 15 years, and I figure it's got at least another 15 years left. When the gas man installed our meter, he said it would eventually rust out, but said "it will be here long after you and I are gone".)
CSST installation guide

RayP(MI) · Feb 20, 2012

We had burried natural gas line for many years, half a mile worth... Made of black iron pipe. Usually the only problems we had were where the threads exposed bare metal on the ends of the pipe. Just rethread, add a pipe union, and screw it back together. Helps a lot, if you don't hook onto the line with a plow or cultivator.

Ky. Hauler · Feb 20, 2012

In Ky. you can run the solid yellow with a wire (so it can be found with a detector) I think about 30"-36" if I remember right. You half fill the hole and then put the red plastic "gas" banner/tape warning and finish back filling. I ran a new gas line at a friends rental house. After a couple tries it passed. I would be sure to do it right due to insurance regs.

Wheat Farmer · Feb 20, 2012

Just but in a LP gas line under the drive way here in CO. Had to be inspected. Orange pipe. 18" deep. Black iron pipe on the side of the building. Had to hold 20 lbs air pressure for 15 minutes. locator wire, and I also put in caution tape. I put one at the pipe and another one just under the surface.

jbp · Feb 20, 2012

My black iron gas line lasted about 35 years. Lost a 100 gallons of LP before I smelled it, but the wife says I don't smell good sometimes. She must be right. Joe

Bruce 4950 · Feb 20, 2012

The stainless steel pipe is not rated to be buried.

O/T Buried Natural Gas Line?

Genos

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JDseller

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VicS

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Spook

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Dean Olson

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Dean Olson

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Stephen Newell

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ohiojim

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TonyIN

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MarkB_MI

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Wheat Farmer

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jbp

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Bruce 4950

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