|Question: 08-06||Code Section: 7||Date: 8 February 2008||
OBC 2006 Reference: 126.96.36.199.(1), 188.8.131.52.(1)(g)
Question: The attached illustration... (is)...in regards to the venting of a water closet and bath tub installation. Our inspectors are seeing this in housing and to me it does not look right but I am wondering if it meets the wet venting requirements as written in the code. I have read over 184.108.40.206. and cannot seem to find any wording that can restrict this type of installation.
Interpretation: Section 220.127.116.11.(1)(g) refers to the "continuous vent" serving a wet vent. The diagram shows a "back vent". The definition in section 18.104.22.168.(1) defines it as an extension of a VERTICAL section of a branch or fixture drain. Note all the explanatory drawings in the appendix all show the wet vent terminating in a continuous vent that we used to call a continuous waste and vent.
Approved at AMES 2008