Red Seal Gasfitter — Class B Practice Exam

Which method is recommended to support vertical piping?

1. Clamps or bolts

2. Pipe straps or hangers

3. Wires or ropes

4. Planks or boards

The correct answer is: Pipe straps or hangers

Supporting vertical piping is crucial for maintaining the integrity and safety of gas systems. The use of pipe straps or hangers is the recommended method because these devices are specifically designed to securely hold pipes in place. Pipe straps and hangers provide a stable and adjustable support that can accommodate the weight and expansion properties of the pipe material, which is particularly important for vertical installations. Pipe straps distribute the load of the pipe across a wider area, which helps to prevent damage or bending. Hangers, often adjustable, are designed to provide additional support and can be easily installed at regular intervals to ensure that the vertical piping does not sag or shift over time due to gravity or thermal expansion. While clamps or bolts could be used in some situations, they do not offer the same level of support and flexibility as pipe straps or hangers. Wires or ropes, though they might hold weight temporarily, lack the structural integrity needed for long-term support and can fray or stretch, leading to potential failures. Planks or boards are not practical for this purpose as they do not provide a secure support mechanism for the integrity of the piping system. Thus, using pipe straps or hangers is the most effective and reliable method for supporting vertical piping in gasfitting applications.