6.17.4

[Attavior]

Is a duplex with a multi meter manifold with underground kits to each separate home still requiring this? . I always thought that this code was for buildings with multiple meters running directly through it. Is each separate home considered a separate building even though they are attached?

6.17.4
Every piping or tubing system that enters a building that has two or more gas meters shall be
permanently identified with the room number, apartment number, or the area of the building it serves. 

[Porcupinepuffer]

That code exists to shut off or service gas to a particular location without confusion. I'm to the understanding a duplex is considered to be one building. If it's not overly obvious what gas meter goes to where, I would imagine that code would definitely apply.

[Attavior]

Makes sense to me.  My thought of each residence being a individual building is my source of questioning.  Do you see this enforced much by the inspectors in your area.  We have just one that dings us on new build a.