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    gerry collins's Avatar
    gerry collins Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Mar 4, 2009, 03:33 PM
    Toilet Waste Pipe
    Hi,

    I am running new 3" pvc toilet drain 4' between joist, then have an elbow, then have to cut 4' hole through 3 joist, to drain to 1st floor . Will I have a problem with the toilet draing.

    Also, will 1' 1/2" vent be enogh for toilet?
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #2

    Mar 4, 2009, 04:11 PM
    Hi Gerry...

    You said, "then have to cut 4' hole through 3 joist"...? Did you mean a 4" hole?. hope so... ;)

    The toilet should drain fine as long as you have 1/4" pitch per foot of pipe and the vent connects into the toilet drain line within 6-8 feet of the toilet elbow.

    A toilet requires a 2" vent, but 1.5" is better than no vent at all, for sure... so up to you here.

    Let me know if you have more questions...

    MARK
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