IPC fixture order for horizontal and vertical wet vent

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Tom Gabriele, Feb 18, 2020.

  1. Tom Gabriele

    Tom Gabriele New Member

    Feb 17, 2020
    This is existing construction that I am trying to update to current code while renovating a bathroom. The highlighted parts in the diagram are changes I already have planned; namely making all the connections independent rather than double wyes for the WCs tub and shower, and upsizing to 2" past the sinks.

    Anyway, IPC 912.1 says that horizontal wet vents are allowed to have any independent fixtures connected in any order. 912.1.1 says that in vertical wet vents, nothing can connect past the wc.

    In this arrangement:

    Does the whole thing qualify as a vertical wet vent, and the tub and shower can't connect downstream of the WCs, or are there two different sections, with the vertical wet vent section consisting of only the tub and shower? I assume the former and this arrangement wouldn't be allowed. So then in that case, the tub and shower would simply have to be moved to the horizontal section so the whole system is a horizontal wet vent and it would be to IPC, right?
Similar Threads: fixture order
Forum Title Date
Plumbing Forum, Professional & DIY Advice Feedback on DWV Diagram and order of fixtures Sep 27, 2015
Plumbing Forum, Professional & DIY Advice Kitchen and bath fixtures.. any brands to stay away from? Feb 19, 2020
Plumbing Forum, Professional & DIY Advice Macerating Toilet and fixture units question **with photos** Feb 6, 2020
Plumbing Forum, Professional & DIY Advice Measuring developed length and fixture units Feb 2, 2020
Plumbing Forum, Professional & DIY Advice Help....need to adapt 1/2" to imported 15mm shower fixture Jan 20, 2020

Share This Page