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Ontario Building Code

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Volume 1

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Division B

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Part 7

7.5.8.1. Hydraulic Loads Draining to Wet Vents

Feb 03, 2026© King's PrinterJan 16, 2025

(1)

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

(2)

When determining the nominal pipe size of a wet vent, the hydraulic load from the most downstream fixture or symmetrically connected fixtures shall not be included.

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

Forming Part of Sentences 7.5.7.3.(2) and 7.5.8.1.(1)

  • (1)
  • (2)
  • Table 7.5.8.1.

Mentioned in

  • 7. Plumbing
  • 7.5.2.1. Wet Venting
  • 7.5.3.1. Circuit Venting
  • 7.5.7.3. Additional Circuit Vents and Relief Vents
  • 7.5.8.1. Hydraulic Loads Draining to Wet Vents

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