Plumbing Venting

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Good reference:

Vent to drain distances included. Island venting. Air admittance valves. Engineered vent with sump pump and air admittance - like under sink macerator pump.

https://wabo.memberclicks.net/assets/pdfs/Plumbing_Venting_Brochure_2018.pdf

Design

  • Vent exends 6" above roof, except if roof is used for purposes other than weather protection - in which case it's 7'. [1]
  • Washing machine needs a trap - [2]
  • Vent stacks can run up the side of a house - [3]