Which component holds sprinkler piping in place?

• A. Pipe Sizing
• B. Design Criteria
• C. Drop-Out Ceilings
• D. Piping Support

Answer: (D)

The component that holds sprinkler piping in place is the piping support. These supports—hangers, clamps, straps, and brackets—attach the pipe to structural elements like joists or walls, keeping the piping properly aligned and secured so it doesn’t move or sag under its own weight or during water flow. Proper piping supports are essential in NFPA 13R systems to prevent leaks, maintain correct head spacing, and allow for thermal expansion and seismic forces.

Pipe sizing is about selecting the right diameter for adequate flow and pressure, not about physical support. Design criteria refer to the rules and performance requirements the system must meet, not the hardware used to secure pipes. Drop-out ceilings describe a ceiling construction option and do not themselves secure sprinkler piping.