I Got You Covered
What is the coverage area for ESFR head?
100sq ft.
What is the maximum height for an FDC?
48in
What is the pitch required for non-refrigerated main?
1/4" per 10ft
What is the largest pipe size that can be hung from a toggle?
1 1/2in
What is the min/max height of a hose valve?
3-5ft
The small room rule allows sprinklers to be placed how far from one wall?
9ft
What is the minimum height?
18in
Dry system low points subject to freezing must what?
Accessible
What is the maximum size of pipe that can be hung from a coach rod?
4in
What shall be forward flow tested to ensure proper operation?
Backflow preventer
What is the coverage for extra hazard heads?
90-130sq ft
NFPA 13 says that FDCs should have plates (16.12.5.8) fitted on the pipe with raised or engraved letters at least what size in height?
1in
How many psi above trip pressure should be your minimum air pressure?
20psi
What sizes of pipe are hung using 1/2in pipe?
5,6, and 8
Minimum amount of time to close a valve
5sec
12 ft at 144sq ft.
If installing a hydraulicly calculated wet sprinkler system in a retirement home, per NFPA 13, and the system riser is 3in; the FDC must be at least what size?
2 1/2"
How often does a dry system have to be full flow trip tested?
3years
What is the hanger spacing from the end of 1in pipe?
3ft
At what width must you install sprinkler above and below a soffit when dealing with horizontal sidewall sprinkler in soffits?
8in
What is the max spacing for BB(back to back) attic heads?
6ft
Name at least two common connection types for FDCs?
NST/NHT, Storz
When a single fire area contains more than 600 sprinklers or exceeds 275 sprinklers in certain scenarios, two parallel 6-inch dry pipe valves must be installed and cross-connected. This size pipe allows for simultaneous tripping and enables maintenance on one valve while the other remains operational
1in
Hanger required within what distance on a horizontal main after riser?
2ft
Sensing lines for the fire pump and jockey pump must be separate and they must tie into the system between the discharge check and the what?
discharge control