NFPA-99 Practice Exam

Which term describes the section of piping systems that serves a room or group of rooms on the same story?

1. Branch lines.

2. Main lines.

3. Risers.

4. Vent lines.

The correct answer is: Branch lines.

The term that describes the section of piping systems that serves a room or group of rooms on the same story is branch lines. These are the smaller sections of piping that extend from the main pipeline to deliver fluids or gases to specific areas, such as individual rooms or services within a building. Branch lines are essential for maintaining efficient and effective distribution of resources in a facility, ensuring that various rooms have access to necessary utilities. In contrast, main lines refer to the primary conduits that transport supply water or gas throughout the building, typically serving as the larger arteries before distributing to branch lines. Risers are vertical sections of piping that carry fluids or gases between floors, while vent lines are specific pipes designed to allow gases or air to escape from a system. Understanding these distinctions helps in comprehending the layout and functionality of fluid and gas distribution systems within buildings.