Island sink vent

[gtblum]

House was built in 96. The kitchen sink is in an island. There's no loop and no mechanical vent. Just a really nice S trap.

Q is, how far back did they require a loop for these? I've seen a reference to 2003. Nothing before that.

[kurt]

How far is it from the main stack?

[gtblum]

Roughly, around six feet.

[Bill Kibbel]

I know it was covered in 2000.

[gtblum]

Thanks, Gentlemen.