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47 Cards in this Set
- Front
- Back
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GPM Formula |
GPM = 29.7 (D)^2 √NP
D= Diameter NP= Nozzle Pressure |
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FL Formula |
FL = CQ^2L C= Coefficient Q= GPM÷100 L= Length÷100 |
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Structural Fog/Smooth Bore Hand Line NP |
50 psi |
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Smooth Bore Master Stream NP |
80 psi |
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Master Stream Fog Nozzle |
100 psi |
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Wildland Fog Nozzle |
100 psi |
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1" Coefficient |
150 |
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1 1/2" Coefficient |
24 |
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1 3/4" Coefficient |
10 |
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2 1/2" Coefficient |
2 |
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3" Coefficient |
.8 |
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4 1/2" Coefficient |
0.1 |
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5" Coefficient |
0.08 |
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Hand Line GPM 7/8" |
160 GPM |
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Hand Line GPM 15/16" |
185 GPM |
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Hand Line GPM 1" |
210 GPM |
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Hand Line GPM 1 1/8" |
250 GPM (266) |
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Hand Line GPM 1 1/4" |
325 GPM |
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Master Stream GPM 1 3/8" |
500 GPM |
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Master Stream GPM 1 1/2" |
600 GPM |
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Master Stream GPM 1 3/4" |
800 GPM |
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Master Stream GPM 2" |
1000 GPM |
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Percent Drop Equation |
(static - residual)(100) % drop= ------------------------------- static |
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3 Like Lines |
0-10%
@50 compound >5psi (50-45psi) |
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2 Like Lines |
11-15%
@50 compound 5 > 7.5 psi (45-42.5) |
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1 Like Line |
16-25%
@50 compound 8 > 12.5 psi (42-37.5) |
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0 Like Lines |
</= 26% @50 compound >/= 37 psi (</= 13) |
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Pump Discharge Pressure (PDP) |
PDP = NP + FL + AL +/- EP NP= nozzle pressure FL= friction loss AL= appliance loss EP= elevation pressure |
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PDP for 150' of 1 3/4" with 7/8" @160 GPM (Pre-connect Crosslays) |
PDP = 50 + 38 = 88psi |
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PDP for 200' of 2 1/2" with 1 1/8" @ 250 (Pre-connects) |
PDP = 50 + 2(12.5) = 75psi |
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FL for 1 3/4" flowing @ 160gpm |
25 psi per 100 ft |
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FL for 2 1/2" flowing 250 gpm |
12.5 psi per 100 ft |
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FL for 2 1/2" flowing 320 GPM
(wyed lines) |
20 psi per 100 ft |
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FL for 2 1/2" flowing 160 gpm (One wyed line) |
5 psi per 100 ft |
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√100 |
10 |
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√80 |
8.94 |
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√75 |
8.66 |
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√50 |
7.07 |
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FL for 100' of 1 1/2" flowing 60 GPM
(Wildland Pre-connect) |
9 psi
PDP = 100 + 9 = 109 |
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PDP= 200' of 1" Booster Line flowing 40 gpm |
PDP = 100 + 48 = 148 (PUMP @ 140) |
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PDP for 105' Aerial |
150 psi + EP to achieve 1000 gpm max |
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PDP for Deck Gun |
PDP = 80 NP + 25 AL = 105 psi |
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Appliance Friction Loss Adapters |
+ 10 psi if < 350 gpm |
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Appliance Friction Loss Appliance |
+ 25 psi if < 350 gpm |
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Supplying Automatic Sprinkler System |
PDP @ 150 PSI + 10 psi for each additional 100' of hose |
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Supplying Standpipe System |
PDP = NP + FL + 25 AL + EP |
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Elevation Pressure |
EP = 0.5H or EP = 5psi x (number of stories - 1) |
