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    ssbyrd57's Avatar
    ssbyrd57 Posts: 1, Reputation: 1
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    #1

    Nov 3, 2010, 06:18 AM
    House plumping drain slope
    Can you have too much drain slope?
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #2

    Nov 3, 2010, 06:32 AM

    Hi SSBYRD57...

    Sure can have too much slope. Here, recommended slope is 1/4" pitch per foot of 3" pipe or smaller and can have 1/8" pitch per foot of 4" pipe or larger.

    You can certainly exceed the pitch in the pipe by a bit... say 1/2" to the foot or so, but if say you have like 1-2" or more pitch per foot of pipe the water would flow down the pipe so fast it would basically leave the solids (waste) behind leading to a build up in the pipe that could eventually lead to a clogged drain.

    That being said, if this excess pitch occurs for a short distance... no worries, but if your entire main is piped extreme you could have issues down the road.

    Questions? Let us know...

    Mark
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