True or False? Powder driven studs or welded studs must have a coupling to attach to the rods.

The correct response is that powder driven studs or welded studs must have a coupling to attach to the rods. This is important because proper coupling ensures that there is a secure and reliable connection between the studs and the rods, which is essential for the integrity of the sprinkler system during installation and in operation. Without a proper coupling, the studs may not be adequately secured, leading to potential failures or malfunctions in the system. The design standards and safety regulations necessitate such connections to maintain the functionality and reliability of fire protection systems. Using a coupling also allows for easier adjustments and modifications during the installation process, making it a fundamental requirement in the industry.