Gas Lines On Roof

I ran across this gas piping yesterday.

Gas lines on roof.

Supply branch and drop lines or risers. Definitely needed a permit and the inspection included a gas leak test before we could hook up our stove. The branch line terminates in a drop line which is a vertical pipe dropping down to the appliance from an overhead branch line. Running gas lines on flat roof.

Sent this to my hvac guy who agrees that it is non standard install but not illegal. It extends straight up through the soffit across the roof and is run down into the home at various points. Section 2401 1 101 2 governs the applicability of the provisions of chapter 24 which covers fuel gas piping systems fuel gas appliances and related accessories venting systems and combustion air configurations that are most commonly found in single family and duplex type dwelling structures. It just sits on pieces of 4x4 on the roof.

Are we talking a ground union typically unions are only allowed at the fixture and meter. We had a gas line run over the roof and down into a kitchen wall when we redid our kitchen. We will discuss some of the basics of inspecting gas piping. Buy the right gas pipes and fittings for the job.

Most domestic gas lines use 1 2 inch 1 27 cm through 1 1 2 inch 3 81 cm black pipe while large commercial projects sometimes use larger fittings up to 8 inch. But a ground union is allowed outdoors. Branch lines run to individual appliances. Obviously you need to reseal the roof around the pipe entry point.