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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

7.5.7.1. General

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

(1)

The nominal pipe size of every vent pipe shall conform to Table 7.5.7.1.

Table 7.5.7.1. Minimum Permitted Size of Vent Pipe Based on Size of Trap Served

Forming Part of Sentences 2.5.7.1.(1) and 2.5.8.2.(1)

  • (1)
  • Table 7.5.7.1.

Mentioned in

  • 7. Plumbing
  • 7.5.3.1. Circuit Venting
  • 7.5.7.1. General
  • 7.5.7.3. Additional Circuit Vents and Relief Vents
  • 7.5.7.4. Offset Relief Vents
  • 7.5.8.2. Individual Vents and Dual Vents

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