Definition 1 of 163
Equation for MINIMUM pump pressure required:
Above the top level of sprinklers; however, upon AHJ approval these tanks can be located
in any locale.
Pressure pump + pressure water supply = pressure system demand + pressure frictional
losses + pressure head
Pressure rating of the pump = pump rated pressure / percentage of rated head
•Occupancy classification
•System water demand
•Whether the system is constantly monitored
Term 2 of 163
Overflow capacity (percentage) = system demand / pump rating
Overflow capacity equation
Class ______ standpipes are allowed in buildings equipped throughout with?
Pump rated pressure equation
Tank size equation
,Definition 3 of 163
What determines the types of standpipe systems, classes of systems, and locations of hose
connections?
Local building codes
County zoning ordinances
Building permit
Building height
Definition 4 of 163
Value-engineering equation is:
Normal pressure = total pressure - velocity pressure
Building height
Value = Function / Cost
Low cost And high Value
Definition 5 of 163
A cooling tower classification in which the airflow is essentially perpendicular to the flow of water.
should not
Air Gap
Hyperbolic Cooling Tower
Crossflow Cooling Tower
,Definition 6 of 163
Equation for getting head (ft) converted to pressure (psi)
400sqft
Pressure = 0.434psi/ft * head (ft)
Q = k*sqrt(p)
Overflow capacity (percentage) = system demand / pump rating
Definition 7 of 163
Churn pressure equation
Pump rated pressure = system demand - supply pressure at system demand flow
Normal pressure = total pressure - velocity pressure
Pressure rating of the pump * 1.4 + water supply static pressure < allowable system pressure
Overflow capacity (percentage) = system demand / pump rating
Definition 8 of 163
Pipe or tube listed for light hazard occupancies is permitted in ordinary hazard rooms otherwise
light hazard occupancies where the room does not exceed _________. This allows the uses of
nonmetallic pipe in small rooms such as closets and mechanical rooms.
400 square foot
200 square meter
399 square foot
600 square inch
, Definition 9 of 163
Dry standpipes with _______ ________ ________ are required to be monitored as defined in NFPA _____.
Counterflow Cooling Tower
•supervisory air pressure
•72
Supplementary Conditions
•wet
•in locations where the piping may freeze
Definition 10 of 163
Minimum K-factor a Control Mode Sprinkler should have?
11.2
43.0
26.4
44.8
Definition 11 of 163
Per NFPA 13R quick response sprinklers are permitted to be installed in mechanical closets
discharging at least?
5.1gpm/square foot
400 square foot
0.2gpm/square foot
0.1gpm/square foot
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