Gas PipingQuestion 97 of 120
Which material is permitted for a buried gas service line running from an outdoor meter to a detached garage, but is prohibited for the piping inside the garage?
a.Polyethylene (PE) pipe
b.Schedule 40 black steel pipe
c.Corrugated stainless steel tubing
d.Type L copper tube
Explanation
PE pipe is permitted only outside underground and must transition to an approved metallic material before it rises above grade or enters a building, and a tracer wire or other locating means must be buried with it. Black steel, CSST and copper (where the gas is not corrosive) are all approved for aboveground interior piping, so none of them are limited to underground use.
Law Reference: IFGC §403Practice all 120 questions free — no signup required.
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