Plumbing Venting: Difference between revisions
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*Vents are 10' away from windows or air intakes, or 3 feet above. | |||
*Good openslides on basics - [http://www.plumbingpros.com/pdf/dwvents.pdf] | *Good openslides on basics - [http://www.plumbingpros.com/pdf/dwvents.pdf] | ||
*Vent stack vs stack vent - a stack vent is required in addition to vent stack for 5 stories or more [https://wabo.memberclicks.net/assets/pdfs/Plumbing_Venting_Brochure_2018.pdf] | *Vent stack vs stack vent - a stack vent is required in addition to vent stack for 5 stories or more [https://wabo.memberclicks.net/assets/pdfs/Plumbing_Venting_Brochure_2018.pdf] | ||
Revision as of 00:40, 30 November 2020
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
- Vents are 10' away from windows or air intakes, or 3 feet above.
- Good openslides on basics - [1]
- Vent stack vs stack vent - a stack vent is required in addition to vent stack for 5 stories or more [2]
- Island venting - for example an island sink as in this video - [3] - you can use an air admittance valve, or you can use an island fixture vent loop.
- Vent exends 6" above roof, except if roof is used for purposes other than weather protection - in which case it's 7'. [4]
- Vent is half diameter of drain served. [5]
- Washing machine needs a trap - [6]
- Vent stacks can run up the side of a house - [7]
- Total vent cross sectional area must equal total drain cross sectional area. See point 6 at [8]. Note that air admittance valves add to the total cross sectional vent area.
- 1/8" slope per foot is acceptable for 3" pipe - [9]