Rhode Island Journeyman Plumber Practice Exam

What is required for the maximum distance riser on a drain to a trap?

1. Approval from the plumbing contractor

2. Approval from the inspector

3. No approval needed

4. Compliance with state regulations

The correct answer is: Approval from the inspector

The requirement for the maximum distance riser on a drain to a trap involves obtaining approval from the inspector. This is important because inspectors are responsible for ensuring that plumbing installations meet safety codes and regulations designed to prevent issues such as backflow or clogs in drain systems. The inspector evaluates the proposed installation to verify that it adheres to local plumbing codes, which dictate various specifications, including the permissible distances for risers to maintain proper drainage and trap function. Approval signifies that the plumbing system has been reviewed satisfactorily and is compliant with established standards, allowing for safe and effective operation. While compliance with state regulations is certainly critical to the installation process, direct approval from an inspector is essential to ensure that these regulations are being followed in practice. Therefore, while contractors and regulations play significant roles in plumbing installations, the inspector’s approval is the definitive requirement when it comes to the maximum distance riser on a drain to a trap.