Code Requirement Home › Forums › Archives › Old Bulletin Board Archives › Code Requirement This topic has 1 reply, 2 voices, and was last updated 25 years, 4 months ago by David Unnerstall. Viewing 1 reply thread Author Posts 18 Aug 1999 at 3:25 am #281649 Matt Dale What is the required pitch for a toilet drain.Thank You, Dave 18 Aug 1999 at 2:23 pm #307278 David UnnerstallParticipant Inside plumbing,building drain and branches. 3 and under 1/4 per. ft. 4 and over 1/8 per. ft. Author Posts Viewing 1 reply thread The forum ‘Old Bulletin Board Archives’ is closed to new topics and replies.