Gas line proximity to gunite

[Texas1]

For the builder experts out there....how close can the gunite get to the gas main (meaning the line that can't be moved which supplies the street) without it being an issue? In my situation the gas main that the houses on our street taps into is basically on the utility easement in my backyard. This is the 2inch street line, not the 6 inch main.

[Denniswiseman]

The main must be accessible, which may mean breaking up your decking
This post may be of some help http://smartpig.pstrust.org/new-natural ... -to-homes/