Lvl 1 Flashcards
What does AL stand for?
Appliance Loss
What does DP stand for?
Discharge Pressure
What does EP stand for?
Elevation Pressure
What does FL stand for?
Friction Loss
What does gpm stand for?
Gallons per minute
What does NP stand for?
Nozzle Pressure
What does NR stand for?
Nozzle Reaction
What does PDP stand for?
Pump Discharge Pressure
What does “Q” equal?
Flow divided by 100
What does RP stand for?
Residual Pressure
What does SP stand for?
Static Pressure
What does TPL stand for?
Total Pressure Loss
One cubic foot contains how many gallons of water?
7.5
How many pounds does one cubic foot of freshwater weigh?
62.5
How many pounds does one gallon of freshwater weigh?
8.33
1 gallon of water contains how many cubic inches?
231
A column of water 1 ft high exerts how much pressure at its base?
0.434psi
A column of water 2.304 ft high these are how much pressure at its base?
1psi
A 50-ft length of 1.75” hose contains how many gallons of water?
6.24
A 50-ft length of 1.88” hose contains how many gallons of water?
7.2
A 50-ft length of 2.5” hose contains how many gallons of water
12.74
A 50-ft length of 3” hose contains how many gallons of water?
18.35
A 100-ft length of 4” hose contains how many gallons of water?
65.25
A 100-ft length of 5” hose contains how many gallons of water?
101.94
What is the shortcut for square and half numbers? Example 4.5
4.5 is between 4 & 5, multiple those numbers and add 0.25. So 20.25
What is the equation for determining the volume of water in a rectangular shape?
L x W x H x 7.5(gallons per cubic ft)
What is the formula to determine the volume of water in a cylinder?
π x R2 x H x 7.5
π = 3.14
R = radius
What is the equation to determine the flow from a smooth bore nozzle?
GPM = 29.7 x D2 x √NP
29.7 (is a mathematical constant) X Diameter squared X Square root of the Nozzle Pressure
