What is the purpose of shopwelding the piping in a standpipe system?

• A. To reduce welding costs during installation.
• B. To increase the structural strength of joints.
• C. To minimize the fire hazard associated with inplace welding.
• D. To shorten the overall installation time.

Answer: (C)

The main idea is reducing risk from hot-work during installation. Welding inside a building or in-place creates sparks, heat, and possible ignition sources that can start a fire while combustible materials or fuels are nearby. By shop-welding the piping, the work is done in a controlled, fire-safe environment with proper fire protection measures, and the assembled sections are then installed with minimal on-site welding. This significantly lowers the chance of starting a fire during construction or maintenance of the standpipe system. Shop welding also helps ensure weld quality and reliability since it’s performed under controlled conditions, which is value that supports safety and long-term performance. So, the purpose is to minimize the fire hazard associated with inplace welding.