BOF Mod B mid-term test
question and answers
Recommended MINIMUM pressure for water distribution systems?
20 PSI
Types of water main
1)Primary feeders or trunk lines
2)Secondary feeders or branch lines
3)Distributors
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Standard distance between two residential fire hydrants
500ft
Standard distance between two high value area fire hydrants
300ft
What is a dry barrel hydrant?
Used in areas of possible freezing and below freezing temps
, Where is a wet barrel hydrant used?
Warmer areas
What is water flow?
Quantity of water moving through the pipe or house measured in
GPM (gallons per minute)
What is water pressure?
Amount of force per square inch of water measured in psi (pounds
per square inch)
What is potential energy?
Stored energy
What is kinetic energy?
Energy being used
What is static pressure?
The amount of pressure in the water when no water is moving and is
potential energy
What is residual pressure?
Amount of pressure in the water distribution system during period
of normal consumption
What is friction loss influenced by?
Size, volume, pressure, and distance
What is elevation pressure? (head pressure)
The amount of pressure lost by going up a flow
What is a water hammer?
Surge in pressure caused by a sudden stop of water flow, can cause
hose rupture, separated couplings, plumbing damage
How often should hydrants be tested?
At least once a year
How much water does a tender carry?
A tender usually carries up to 3500 gallons of water
How much water does an engine carry?
question and answers
Recommended MINIMUM pressure for water distribution systems?
20 PSI
Types of water main
1)Primary feeders or trunk lines
2)Secondary feeders or branch lines
3)Distributors
Previous
Play
Next
Rewind 10 seconds
Move forward 10 seconds
Unmute
0:05
/
0:15
Full screen
Brainpower
Read More
Standard distance between two residential fire hydrants
500ft
Standard distance between two high value area fire hydrants
300ft
What is a dry barrel hydrant?
Used in areas of possible freezing and below freezing temps
, Where is a wet barrel hydrant used?
Warmer areas
What is water flow?
Quantity of water moving through the pipe or house measured in
GPM (gallons per minute)
What is water pressure?
Amount of force per square inch of water measured in psi (pounds
per square inch)
What is potential energy?
Stored energy
What is kinetic energy?
Energy being used
What is static pressure?
The amount of pressure in the water when no water is moving and is
potential energy
What is residual pressure?
Amount of pressure in the water distribution system during period
of normal consumption
What is friction loss influenced by?
Size, volume, pressure, and distance
What is elevation pressure? (head pressure)
The amount of pressure lost by going up a flow
What is a water hammer?
Surge in pressure caused by a sudden stop of water flow, can cause
hose rupture, separated couplings, plumbing damage
How often should hydrants be tested?
At least once a year
How much water does a tender carry?
A tender usually carries up to 3500 gallons of water
How much water does an engine carry?
