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My new home is under construction and I noticed the gas has been distributed to three places through a very tight and rough hand-dug hole.

Yes, I have concern about potential gas leakage. Though we will have advanced detector...

Is such installation normal? If not, What kind of code is related to this?

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Update: 2016/03/06

More unbelievable work has been done to "protect" the gas pipes...

not straight stress hurt1 hurt2 hurt3 brand of the flexible pipe

County inspector just say they will determine if it meets the minimum code requirements. Now just wait to see if it can pass the county inspection.

BigBadFatRabbit
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No, it is not okay. Make sure this is fixed before it's covered up. I'd have to search through the code books to find all the relevant code sections, but simply looking at this there appears to be a few problems.

I'm pretty sure you can't have connections like that in concealed location. So if this wall is going to be finished (covered with drywall), they have to be moved.

If the pipe is within a certain distance from the edge of the wood member it passes through, steel plates have to be used to protect the pipe.

I'm not sure if non-rigid pipe is allowed in concealed locations, but I'm sure if it is, it has to be protected in some way.

Call your local government, and have this inspected.

Tester101
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I would not have any flex lines in the walls. It is probably against code. It could be ruptured by a nail or screw. As for running it through the floor and trench they make a solid pipe rated for that. If you passed inspection it would be a good idea to ask for another one and point this out. Better safe then sorry.

Tom G.
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