I called out an ‘s-trap’ and the builders plumber re-looked at it. Said it’s actually a p-trap, because the vent is within 5 feet of the weir. I haven’t responded to the client, but the 5 foot rule is a venting rule, and has nothing to do with defining if something is an s or p. Can you help, I might be messed up.
From email: “he insisted that what he’s installed is in fact ‘P’ shaped plumbing”
A B C … P . . S … trap?