Florida Fire State Practice Exam 2025 - Free Firefighter State Exam Practice Questions and Study Guide

The correct answer, "Riser," refers to the vertical piping that extends from the ground to serve various components in a fire protection system, such as a one-way check valve, alarm valve, and main drain. Risers are essential in vertically transporting water to the necessary levels for fire suppression systems.

In the context of fire protection systems, risers are used for both supply and drainage lines, allowing for efficient and effective water distribution to fire sprinklers and other suppression mechanisms located on different floors of a building. By having a designated vertical piping system, the integrity of the system is maintained, ensuring that water flows correctly and effectively during a fire emergency.

In contrast, the feed main typically refers to the horizontal piping that supplies water to the riser, while the cross main represents horizontal pipes connecting risers to service more than one area. Downcomers are sometimes involved in larger systems, assisting in the downward flow of water or foam but do not specifically denote the vertical piping connected to those components.