The Ontario Building Code | Lengths for other Vent Pipes

7.5.8.5. Lengths for other vent pipes

(1) When sizing an additional circuit vent, offset relief vent, relief vent,yoke vent and the vent pipe for an interceptor, dilution tank, sanitary sewage tank or sump, or manhole, length is not taken into consideration.

7.5.9. Air Admittance Valves