05-09 Branch vent
Question: 05-13 Code Section: 7 Date: OBC 2006 Reference: Question: If a 2″ branch vent is receiving 12-1 1/2” vents other than water closets and only 5 water closets, would the 2′” branch vent need to be increased in size if an additional 2 – 1 1/4″ were added in lieu of the 6th water …