Rhode Island Journeyman Plumber Practice Exam

What is the clearance for rodding of a 6" pipe and an 8" pipe?

1. 18 inches above

2. 2 feet above

3. Above

4. 24 inches above

The correct answer is: Above

The clearance for rodding a pipe is crucial for ensuring that maintenance can be performed without obstruction, allowing for the use of various tools and equipment. When it comes to clearing obstructions in larger pipes, like those with diameters of 6 inches and 8 inches, having sufficient overhead space is necessary. The general standard for rodding of pipes indicates that a minimum clearance is necessary to accommodate rodding tools and any potential operators working over the top. Specifications typically set clearance heights based on the pipe's diameter, allowing the necessary movement space for effective maintenance. The correct choice indicates a requirement for clearance but does not specify a definite measurement, hence allowing for interpretation within the broader context of plumbing codes or local requirements, which could suggest different standards based on specific circumstances and equipment used. While other options provide specific measurements, the correct choice captures the essential requirement for some level of clearance above the pipe, aligning with the understanding that various situations might necessitate differing clearance distances as prescribed by local plumbing codes or best practices.