Can I place a gas riser under house ?

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Rhavlick

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I’m plumbing a gas line in from under my pier and beam home to supply a detached structure with 1” poly line.

Is it legal for me plumb an anodeless riser from my home supply line that then enters the ground to connect to the PE pipe. Or does the riser need to terminate on the exterior of the home first then enter the crawl space with black pipe ? See attached picture.

From what I’ve read gas risers need to terminate above grade in case gas leaks out under ground and follows the gas line back up to the surface. In my situation, the riser will be above grade but in the crawl space under the home which is a confined space.

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John Gayewski

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You can run it like that but it needs to be in a conduit that rises outside of the slab.
 
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Jeff H Young

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I think you've got some restrictions on that gotta be inside a conduit vented outside its supposed to go through the floor and terminate in an occupiable portion of building. If I'm looking at the code correctly .
 
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