The Ontario Building Code | Hydraulic Loads Draining to Wet Vents

7.5.8.1. Hydraulic Loads Draining to Wet vents

(1) The hydraulic load that drains to a wet vent shall conform to Table 7.5.8.1.

(2) When determining the size of a wet vent, the hydraulic load from the most downstream fixture or symmetrically connected fixturesshall not be included.

Table 7.5.8.1.
Maximum Permitted Hydraulic Loads Drained to a Wet vent

Forming Part of Articles 7.5.2.1. and 7.5.8.1.

Item	Column 1	Column 2	Column 3
	Size of Wet vent, in.	Maximum Hydraulic Load, Fixture Units
		Not Serving water Closets	Serving Not More Than Two water Closets
			Fixtures Other Than water Closets
1.	1 ½	2	N/A
2.	2	4	3
3.	3	12	8
4.	4	36	14
5.	5	N/A	18
6.	6	N/A	23