help -- simple plumbing question

Discussion in 'Homesteading Questions' started by gobug, Apr 17, 2006.

  1. gobug

    gobug Well-Known Member Supporter

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    My books are packed away and I am doing some plumbing repair.

    What is the proper amount of drop in a drain line over 10 feet - or 8 feet?

    thanks
    GO
     
  2. Obser

    Obser "Mobile Homesteaders"

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    I use one eighth to one quarter inch per foot. Never had a problem. Don't know what the books say.
     

  3. Abuelo in TX

    Abuelo in TX Active Member

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    The plumbing code used to specify 1/4" slope per foot. I doubt it has changed
     
  4. raymilosh

    raymilosh Well-Known Member

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    code here requires 1/4 inch per foot, but people say you can get away with as little as 1/8 inch per foot if you really really need to. I have heard that "half a bubble off level" is about right. I think i remember trying that on my pipes after i carefully calculated and laid them and that it worked. Please verify it for yourself before you just take my advice though
     
  5. kmaproperties

    kmaproperties Well-Known Member

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    1/4 per foot max. if you go too steap the solids will stick to the walls and the liquids keep going. you then build up a plug.