Buy the right gas pipes and fittings for the job.
Gas lines on roof.
Definitely needed a permit and the inspection included a gas leak test before we could hook up our stove.
But a ground union is allowed outdoors.
Gas furnaces stove dryer i have never seen gas piping run across a roof like this.
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.
Obviously you need to reseal the roof around the pipe entry point.
Branch lines run to individual appliances.
We will discuss some of the basics of inspecting gas piping.
Running gas lines on flat roof.
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.
The piping inside the house is called the gas supply line or building line.
Supply branch and drop lines or risers.
The branch line terminates in a drop line which is a vertical pipe dropping down to the appliance from an overhead branch line.
We had a gas line run over the roof and down into a kitchen wall when we redid our kitchen.
Sent this to my hvac guy who agrees that it is non standard install but not illegal.
I ran across this gas piping yesterday.
From 1 2 to 1 1 2 pipe the face of a fitting to face of another fitting you add 3 4.