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The laws of mathematics and physics

 

 

Instructions: Complete this assignment by solving each of the following problems (formulas). This assignment provides you with an opportunity to accomplish the following course learning outcome:

1. Apply the laws of mathematics and physics to the movement of water in fire suppression activities.

Save all of your work within this worksheet before submitting it in Blackboard for grading.

1. Calculate the total friction loss by using the following details. Be sure to show all of your work. In the table below, clearly indicate your final answer along with the appropriate units of measure (i.e., The total friction loss is XX psi for XXX feet of X-inch hose). Round your answer to the nearest whole number.

Hose diameter 1.75-inch
Volume (of water) 150 gpm
Hose length 300 feet
Friction loss =

 

 

 

2. Determine the pump discharge pressure for a scenario containing the following details. You are using a handheld smooth-bore nozzle for this scenario. Be sure to show all of your work. In the table below, clearly indicate the total friction loss, pump discharge pressure, along with the appropriate units of measure (i.e., The total friction loss is XX psi for XXX feet of X-inch hose plus any applicable appliance loss or elevation gain/loss). Round your answer to the nearest whole number.

Hose diameter 2-inch
Volume (of water) 200 gpm
Hose length 250 feet
Friction Loss =
Nozzle Pressure =
Pump Discharge Pressure =

3. Determine the pump discharge pressure for a scenario containing the following details. You are using a handheld smooth-bore nozzle for this scenario. Be sure to show all of your work. In the table below, clearly indicate the total friction loss, pump discharge pressure, along with the appropriate units of measure (i.e., The total friction loss is XX psi for XXX feet of X-inch hose plus any applicable appliance loss or elevation gain/loss). Round your answer to the nearest whole number.

Hose diameter 3-inch with 2.5-inch couplings
Volume (of water) 300 gpm
Hose length 350 feet
Friction loss =
Nozzle pressure =
Pump discharge pressure =

4. Determine the pump discharge pressure for a scenario containing the following details. You are using a handheld fog nozzle that is deployed up 30 feet via a rope to the 3rd floor of a parking deck for this scenario. Be sure to show all of your work. In the table below, clearly indicate the total friction loss, pump discharge pressure, along with the appropriate units of measure (i.e., The total friction loss is XX psi for XXX feet of X-inch hose plus any applicable appliance loss or elevation gain/loss). Round your answer to the nearest whole number.

Hose diameter 2.5-inch
Volume (of water) 250 gpm
Hose length 400 feet
Friction loss =
Nozzle pressure =
Pump discharge pressure =

5. Determine the pump discharge pressure for a scenario containing the following details. You are pumping a gated wye down a long driveway that is not accessible by an apparatus for this scenario. Both handlines running off the gated wye are handheld fog nozzles. Be sure to show all of your work. In the table below, clearly indicate the total friction loss, pump discharge pressure, along with the appropriate units of measure (i.e., The total friction loss is XX psi for XXX feet of X-inch hose plus any applicable appliance loss or elevation gain/loss). Round your answer to the nearest whole number.

Gate Wye Supply Hose 3-inch with 2.5-inch couplings that is 500 feet long
Attack Hose line 1 1.75-inch hose, 200 feet long flowing 150 gpm
Attack Hose line 2 1.75-inch hose, 200 feet long flowing 150 gpm
Volume (of water) =
Friction loss =
Nozzle pressure =
Pump discharge pressure =

6. Determine the pump discharge pressure for a scenario containing the following details. You are supplying a portable master stream device with a smooth-bore nozzle in this scenario. Be sure to show all of your work. In the table below, clearly indicate the total friction loss, pump discharge pressure, along with the appropriate units of measure (i.e., The total friction loss is XX psi for XXX feet of X-inch hose plus any applicable appliance loss or elevation gain/loss). Round your answer to the nearest whole number.

Hose diameter 3-inch with 3-inch couplings
Volume (of water) 400 gpm
Hose length 300 feet
Friction loss =
Nozzle pressure =

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