FDC
What does FDC stand for?
Fire Department Connection
Elevation loss calculation?
.5 psi per ft or 5 psi per story
What psi do you pump a sprinkler system at?
150
How close is a hydrant (typically) required to be to a FDC?
100’
NFPA Reference
NFPA 14
NFPA reference?
NFPA 13
What type of valve is inside an FDC?
Clapper Valve
What are the three standpipe configurations?
1) standpipe equipped building
2) Improvised with hose
3) Improvised with aerial
At what size do new commercial buildings require a sprinkler system?
5,000 square feet or over 55ft high
What decade did FDCs (standpipes/sprinklers) become standard in commercial building codes?
1940s
What are the classes of standpipes installed in buildings?
Class 1– Fire department use
Class 2– Occupant use
Class 3– Combination use
On average, what is the GPM of a sprinkler head?
25 GPM
If a treaded FDC connection is ceased (female swivel), how many times should you rotate the hose (male end) prior to connecting?
6 rotations
What are the 4 types of standpipes installed in buildings?
1) Wet—water in pipes
2) Automatic Dry— pressurized air released by opening a hose valve.
3) Semi-automatic Dry— air released and pipes filled by a actuation device
4) Manual Dry— only pipes
What are the 4 primary types of sprinkler systems?
1) Wet— constantly filled with pressurized water
2) Dry— pipes are filled with pressurized air
3) Deluge— open heads that are activated with a separate detection system
4) Pre-action— two-step activation