A vent pipe is found to be undersized. What is the typical method to correct this condition?

ICC P1 exam practice question · Vents

A vent pipe is found to be undersized. What is the typical method to correct this condition?

AIncrease the size of the vent pipe at the existing location.
Install a new vent pipe with the correct size.
CReplace the entire vent system.
DAdd a vent booster.

Exam tip

When dealing with undersized vent pipes, it's crucial to replace them rather than attempt to correct the size at the existing location.

Why B is correct

According to Section P1103.1.2 of the 2024 International Residential Code, if a vent pipe is undersized, it must be replaced with the correct size. This ensures proper venting and prevents issues.

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A vent pipe is found to be undersized. What is the typical method to correct this condition?

A vent pipe is found to be undersized. What is the typical method to correct this condition?

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