# Engineeer's Test 2014

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1. Standard Friction Losses
• Elevation per story/10' - 5 psi
• Wye/Siamese - 10 psi
• Standpipe - 25 psi
• Master Stream Devices at Capacity - 25 psi
• Aerial Devices - 25 psi
2. Standard Flow and Friction losses of Handheld Nozzles (Per 100' of 13/4" hose except where noted)
• Control Nozzles - NP = 100 psi
• TFT Control Nozzle - 170 gpm  (35 FL)
• Control Nozzle on 21/2" hose - 250 gpm (15 FL/100')

• Solid Stream Nozzles - NP = 50 psi
• 3/4" - 120 gpm (20 FL)
• 7/8" - 160 gpm (30 FL)
• 15/16" - 180 gpm (40 FL)
• 1" - 200 gpm (50 FL)
• 11/8" - 250 gpm (15 FL - 21/2")
• 11/4" - 325 gpm (25 FL - 21/2")
3. Standard Flow and Friction Losses of Master Stream Nozzles per 100' of 21/2" hose
• Solid Stream - NP = 80 psi
• 11/4" - 400 gpm (36 psi)
• 11/2" - 600 gpm (78 psi)
• 13/4" - 800 gpm (136 psi)
• 17/8" - 900 gpm (171 psi)
• 2" - 1000 gpm (210 psi)

• Distributor Nozzle - NP = 100 psi
• Control - 1000 gpm (200 FL)
4. Sprinkler System Flows
• Pump at 150 psi
• Standard 1/2" head flows 20 gpm at 15 psi
5. Dual Pumping
• Two Pumps working off of a single hydrant.
• In order to use, measure drop in intake pressure once attack lines are in service.

• up to 10% = 3 like volumes remaining
• 11-15% = 2 like volumes remaining
• 16-25% = 1 like volume remaining
6. Six Principles of Pressure
• 1. Fluid pressure acts perpindicular to any surface on which it acts
• 2. Fluid pressure at a point in a fluid at rest is the same intensity in all directions
• 3. Pressure applied to a confined fluid is transmitted equally in all directions
• 4. The pressure of a liquid in an open vessel is directly proportional to its depth
• 5. The pressure of a liquid in an open container is directly proportional to the density of the liquid
• 6. The pressure of a liquid on the bottom of a vessel is independent of the shape of the vessel
7. Atmospheric Pressure v. Water Pressure
• 14.7 psi at sea level
• 12.6 psi in Salt Lake City
• Drops 0.5 per 1000' of elevation gain
 Author: Anonymous ID: 283176 Card Set: Engineeer's Test 2014 Updated: 2014-09-16 03:28:59 Tags: Firefighting Fire Engineering Waterflows Pumping Apparatus Driver Operator Folders: Firefighting Description: Flashcards for preparation for the 2014 Park City Fire Service District's Engineer Promotional Exam Show Answers: