7 Theroretical Pressure Calcs

Question 1

C in the friction loss equation means

Answer 1

Friction loss coefficient

Question 2

Q in friction loss calc means

Answer 2

Flow rate in hundreds of gallons per minute gpm/100

Question 3

L in friction loss equation means

Answer 3

Hose length in hundreds of feet feet/100

Question 4

Appliance friction loss for less than 350 gpm

Answer 4

0

Question 5

Master stream Appliance friction loss

Answer 5

25

Question 6

Friction loss for each Appliance in a hose line assembly flowing 350 gpm or more, other than a master stream

Answer 6

10 psi per device like a Siamese

Question 7

EP stand for

Answer 7

Elevation pressure

Question 8

Elevation pressure loss is calculated how

Answer 8

.5 times the height in feet

Question 9

What is the psi loss per 10 ft or per story

Answer 9

5 psi per story

Question 10

What hose lay presents the simplest friction loss calculation

Answer 10

Single hose lay

Question 11

When using more than one hose line of equal length and diameter friction loss calculations need to be done for

Answer 11

Only one line. Discharge pressure then set for the highest pressure line. Gate back for others

Question 12

Primary friction loss consideration is

Answer 12

Volume of water flowing per minute.

Question 13

For hose line operating off of a wye, what must be done to prevent different nozzle pressures

Answer 13

Lines must be same size and length.

Question 14

When considering pressure loss in an elevated waterway assume a loss of what the master stream appliance

Answer 14

25 psi

Question 15

In the pump pressure formula PDP stand for

Answer 15

Pump discharge pressure

Question 16

In total pump pressure formula, TPL stands for

Answer 16

Total pressure loss in psi

Question 17

Actual amount of pressure being produced by the pump. Difference between intake pressure and discharge.

Answer 17

Net pump discharge pressure