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    dannac's Avatar
    dannac Posts: 267, Reputation: 9
    Full Member
    		  
    #1

    Nov 22, 2010, 05:51 AM
    Proper slope for 4" pipe
    Installing bath in a new garage that will take approx a 60' run to existing 4" sewer line.

    To get my slab height I need to know the proper (or to code) slope needed for a 4" pipe.

    Example : 1/4" on 4'

    Thanks
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #2

    Nov 22, 2010, 06:40 AM

    Hi Dannac...

    Proper slope by code is 1/8" pitch per foot of slope. Code would also allow 1/4" per foot, but all that is required is 1/8" per foot.

    Cleanouts belong at every change of direction and evey 50' otherwise.

    Mark
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #3

    Nov 22, 2010, 06:45 AM

    In my area, ( SPC code) we slope drainage pipes under 3"m at 1/4" inch to the foot.
    Three inches and over get 1/8th" to the foot.
    You would have 7 1/2" of fall on a 60 foot run. Good luck, Tom
    dannac's Avatar
    dannac Posts: 267, Reputation: 9
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    #4

    Nov 22, 2010, 07:57 AM

    Thank you(s)
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