What is the function of a fire department connection (FDC) and what signage and accessibility requirements apply?

• A. It houses the fire alarm control panel.
• B. It provides an external water supply for firefighting; signage such as 'FDC' and 'No Parking' may be required; the connection must be readily accessible and unobstructed for fire department use.
• C. It serves as a ventilation intake.
• D. It is used for building irrigation.

Answer: (B)

The main idea is that a fire department connection provides an external water source for the building’s fire protection system. Firefighters attach their hoses to the FDC to pump water into the standpipe or sprinkler system when the building’s internal water supply isn’t enough or when additional pressure is needed. This makes the FDC a crucial access point for augmenting water flow during a fire.

Signage and accessibility come into play to ensure responders can find and use the connection quickly and without obstruction. Buildings typically identify the location with clear signs such as “FDC” so fire crews know exactly where to connect. In many places there may also be a “No Parking” or similar indicator near the connection to keep the area open for emergency use. The connection itself must be readily accessible and unobstructed, meaning vehicles, gates, landscaping, or other barriers should not block it, and it should be easy for firefighters to reach, attach hoses, and operate the caps or any protective hardware.

Keep in mind what the FDC is not used for: it is not a place to house the fire alarm control panel, not a ventilation intake, and not for building irrigation. Its purpose is specifically to deliver external water to the fire protection system so incident crews can stage a reliable water supply quickly.