CALCS Flashcards
1
Q
pump discharge pressure equation
A
PDP = NP + FL + AP +/- EL
2
Q
friction loss equation
A
C x (Q^2 x L) / 100
Q = GPM
L = length
3
Q
coefficient of 1 3/4’”
A
15.5
4
Q
coefficient of 2 1/2”
A
2
5
Q
coefficient of 5”
A
0.08
6
Q
appliance pressure for handlines
A
10 psi
7
Q
appliance pressure for deckgun, monitor, and aerials
A
15 psi
8
Q
elevation pressure
A
5 psi for every 10ft
9
Q
solid tip nozzle reaction equation
A
solid = 1.57 x D^2 x NP
10
Q
fog tip nozzle reaction equation
A
fog = .0505 x GPM x SqRt of NP
11
Q
hydrant capacity equation
A
static - residual = difference
S x 1 = V 3
S x 2 = V 2
S x 3 = V 1
V greater than or equal to D = number of like amount of GPMs
12
Q
GPM equation
A
29.7 x D^2 x SqRt of NP
13
Q
Fire flow equation
A
(L x W)/3 x % involved
14
Q
standpipe PSI
A
100 psi + 5 psi per floor minus 1st floor
15
Q
sprinkler system PSI
A
150 psi
