This is the City of Markham’s document, as published on its website on 18 October 2026. The municipality may have changed it since: check the current version at the source. Legal notice
Builder Tip Issue No. 36 from the City of Markham Building Standards Department, dated January 1, 2025, and filed with its 2024 Ontario Building Code housing tips, on drainage pipes that serve as wet vents. It quotes Article 7.5.2.1., Clauses (a) to (k): hydraulic load, at most two wet-vented water closets downstream of other fixtures, NPS 2 trap arms, offsets and pipe size. The Objective and a section drawing show a basin and bathtub wet vented by a water closet, with the uppermost fixture on the vertical vent.
DocHub collects what a municipality published; it cannot tell you what is in force today. A newer version may exist, may be titled differently, or may not be posted publicly at all.
Pick a document. It opens here as the real file — you can select its text, search inside it, follow its own links, and every page is present.