Rate of slope on stool line to septic tank

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    • #278520
      MasterPlumbers
      Keymaster

      We are trying to install a new sewer line (approx. 18 ft.) from the stool to the septic tank…we have a 1.6 gal.stool and need to know the slope for the new line.

    • #298680
      hj

      If the pipe is 3″ then 1/4″ is the minimum. If 4″ then you can reduce it to 1/8″ per foot.

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