A building inspector is reviewing the venting system for a high-rise building. Which of the following is the correct venting design for a vent stack serving multiple floors?
- AA single vent stack serving all floors with a minimum 2-inch diameter.
- BMultiple vent stacks, each serving a different floor, with a minimum 1 1/4-inch diameter.
- CA single vent stack serving all floors with a minimum 1 1/4-inch diameter.
- Multiple vent stacks, each serving a different floor, with a minimum 2-inch diameter.
Exam tip
Understand the specific venting requirements for high-rise buildings to ensure compliance.
Why D is correct
Section P2903.1.2 of the 2024 International Residential Code requires multiple vent stacks, each serving a different floor, with a minimum 2-inch diameter for a high-rise building.