Where are additional pressure gauges located in some standpipe equipment?

Where are additional pressure gauges located in some standpipe equipment?

• A. At the base of the standpipes.
• B. At the top of the risers.
• C. On the exterior of the building.
• D. Near the main fire alarm panel.

Answer: (A)

The main idea is to have a reliable, accessible point that shows the actual pressure available in the standpipe system when it’s in use. Placing additional pressure gauges at the base of the standpipes gives a direct readout of the system pressure entering the standpipe, which is the most useful value for firefighters to know when calculating flow and verifying that there is enough pressure at the outlets. If a gauge were placed at the top of a riser, it would only reflect the pressure after losing head through vertical rise and friction and wouldn’t represent what’s available at the outlets. Gauges on the exterior of the building or near the main fire alarm panel don’t provide the correct, practical reading for standpipe operation, whereas a base-mounted gauge gives a clear, accessible indication of the base pressure to monitor and maintain pressure throughout the system.

The main idea is to have a reliable, accessible point that shows the actual pressure available in the standpipe system when it’s in use. Placing additional pressure gauges at the base of the standpipes gives a direct readout of the system pressure entering the standpipe, which is the most useful value for firefighters to know when calculating flow and verifying that there is enough pressure at the outlets. If a gauge were placed at the top of a riser, it would only reflect the pressure after losing head through vertical rise and friction and wouldn’t represent what’s available at the outlets. Gauges on the exterior of the building or near the main fire alarm panel don’t provide the correct, practical reading for standpipe operation, whereas a base-mounted gauge gives a clear, accessible indication of the base pressure to monitor and maintain pressure throughout the system.