Massachusetts Plumbers Journeyman Practice Exam

Where should there be an accessible future vent connection in the basement of every building?

1. On the first floor

2. In an enclosed space

3. Adjacent to the main vent stack

4. Accessible to the fixture

The correct answer is: Adjacent to the main vent stack

An accessible future vent connection in the basement of every building should be located adjacent to the main vent stack. This positioning is crucial because it allows for easy integration of additional fixtures that may be installed in the future. The main vent stack serves as the primary pathway for venting gases and air from the drainage system, so placing the future vent connection nearby ensures a more efficient and straightforward installation process as well as proper venting performance. Additionally, having the future connection close to the main vent stack reduces the risk of installation complications, such as difficult access or the need for extensive modifications to existing plumbing. This location also supports compliance with plumbing codes that typically require venting systems to be functional and capable of accommodating future expansions. While accessibility to the fixture is important, placing the future connection near the main vent stack optimizes the plumbing system's overall efficiency.