A plumbing vent pipe is installed through a roof. Which of the following is the minimum size required for the vent pipe?

ICC P1 exam practice question · Vents

A plumbing vent pipe is installed through a roof. Which of the following is the minimum size required for the vent pipe?

A1.5 inches
2 inches
C2.5 inches
D3 inches

Exam tip

Always check the minimum requirements for vent pipe sizes to ensure compliance.

Why B is correct

According to Section P1103.1.1 of the 2024 International Residential Code, the minimum size for a vent pipe is 2 inches. This ensures proper venting and prevents backpressure.

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A plumbing vent pipe is installed through a roof. Which of the following is the minimum size required for the vent pipe?

A plumbing vent pipe is installed through a roof. Which of the following is the minimum size required for the vent pipe?

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