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