Red Seal Plumbing Practice Exam Prep & Study Guide

One additional method that could be used to restrain joints in an underground water service besides thrust blocks is continuous rodding. Welding and bonding are not considered suitable methods for restraining joints because they can weaken the pipe material and create vulnerabilities in the system. Clamping may provide temporary restraint, but it is not a long-term solution and may eventually fail. Continuous rodding, on the other hand, involves inserting a continuous rigid bar through the length of the pipeline, providing consistent support and preventing movement or separation of the joints.