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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

Standard Flow and Friction losses of Handheld Nozzles (Per 100' of 1^{3}/_{4}" hose except where noted)
 Control Nozzles  NP = 100 psi
 TFT Control Nozzle  170 gpm (35 FL)
 Control Nozzle on 2^{1}/_{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)
 1^{1}/_{8}"  250 gpm (15 FL  2^{1}/_{2}")
 1^{1}/_{4}"  325 gpm (25 FL  2^{1}/_{2}")

Standard Flow and Friction Losses of Master Stream Nozzles per 100' of 2^{1}/_{2}" hose
 Solid Stream  NP = 80 psi
 1^{1}/_{4}"  400 gpm (36 psi)
 1^{1}/_{2}"  600 gpm (78 psi)
 1^{3}/_{4}"  800 gpm (136 psi)
 1^{7}/_{8}"  900 gpm (171 psi)
 2"  1000 gpm (210 psi)
 Distributor Nozzle  NP = 100 psi
 Control  1000 gpm (200 FL)

Sprinkler System Flows
 Pump at 150 psi
 Standard ^{1}/_{2}" head flows 20 gpm at 15 psi

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
 1115% = 2 like volumes remaining
 1625% = 1 like volume remaining

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

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

