Drainage, Waste & VentQuestion 127 of 360
Two fixtures connected at the same level to a vertical drain and served by a single shared vent are using which venting method?
a.Island vent
b.Wet vent
c.Common vent
d.Yoke vent
Explanation
A common vent serves two fixtures that connect at the same level to a shared vertical drain and are vented by one vent. The connecting drain and the vent must be sized for the combined fixture load. This is efficient for back-to-back fixtures such as two lavatories.
Practice all 360 questions free — no signup required.
Related questions on this topic
- An air admittance valve (AAV) serving an individual fixture must be installed a minimum distance above the horizontal branch drain it serves. What is that minimum?
- Where are air admittance valves (AAVs) prohibited from being installed?
- What term describes a vent that connects to the drain of a single fixture and extends independently to the outside air or to another vent?
- A horizontal wet-vent system under the CPC is limited to serving fixtures within…
- In a bathroom-group wet vent, where is the dry vent connection typically made?
- A circuit vent serving a battery of floor-mounted fixtures on a horizontal branch may serve a maximum of how many fixtures?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against California CSLB C-36 Plumbing Trade Examination · How we review