SPRINKLER CALCULATION.xls

HYDRAULIC CALCULATIONS FOR

Project: CONTRACT No.: DATE:

4/27/2017

DESIGN DATA: Occupancy classification: Density:

l/s / m2

Area of application:

m2

Coverage per sprinkler:

m2

Number of Sprinkler Calculated:

nos.

Total water required: (Including Hose Streams)

l/s

NAME of CONTRACTOR: NAME of DESIGNER:

HYDRAULIC CALCULATIONS

STEP No.

Name: Address: Area:

Dead End System without Velocity Pressure

NOZZLE IDENT. & LOCATION

FLOW IN (l/min)

PIPE PIPE SIZE FITTINGS (mm) & DEVICES

q= 1

2

3

4

Q= q=

81.961

Q=

157.56

q=

88.823

Q=

246.38

q=

93.773

Q=

340.16

25

32

40

40

Pe =

0.913 Pt = Pv =

0.040 Pf = Pt =

0.160 Pn = 1.074 Pt =

Pe =

Pv =

0.047 Pf = Pt =

0.187 Pn = 1.261 Pt =

F=

Pe =

Pv =

T= L=

0.036 Pf = Pt =

0.144 Pn = 1.405 Pt =

F=

Pe =

Pv = Pn =

L=

0.066 Pf = Pt =

F=

Pe =

1.405 Pt = Pv =

5

Q=

Pf =

Pn =

T=

4

L=

4

F= T=

4

L=

4

T= 6

Q=

F=

Pe =

1.405 Pt = Pv =

Pf =

Pn =

L=

Pt =

F=

Pe =

1.405 Pt = Pv =

Pf =

Pn =

Q=

L=

Q=

F=

Pe =

1.405 Pt = Pv =

Pf =

Pn =

L=

Pt =

Q=

F=

Pe =

1.405 Pt = Pv =

Pf =

Pn =

L=

Pt =

F=

Pe =

1.405 Pt = Pv =

Pf =

Pn =

Q=

T= L=

Q=

F=

Pe =

1.405 Pt = Pv =

Pf =

Pn =

L=

Pt =

F=

Pe =

1.405 Pt = Pv =

Pf =

Pn =

Q=

T=

0

0

q=

L=

Pt =

Q=

F=

Pe =

1.405 Pt = Pv =

Pf =

Pn =

T=

0

q=

L=

Pt =

Q=

F=

Pe =

1.405 Pt = Pv =

Pf =

Pn =

L=

Pt =

F=

Pe =

1.405 Pt = Pv =

T= q= 15

0

q=

q=

14

0

Pt =

T=

13

0

q=

q=

12

0

q=

T=

11

0

Pt =

T=

10

0

L=

T=

9

0

q=

q=

8

4

Pt =

Pt =

T= 7

4

F=

T= q=

of C= K=

Q=

120 Prepared by: 79.1 Date:

EQUIV. FRICTION PRESSURE NORMAL PIPE LOSS SUMARRY PRESSURE LENGTH (bar/m) (bar/m) (bar/m) (m) L=

75.60

Sheet

0

NOTES

T=

0

Pf = Pt =

Pn = 1.405

Notes:

REF. STEP

- Light hazard Occupancy : The protection area per sprinkler : 18.6m2 - Ordinary hazard Occupancy : The protection area per sprinkler : 12.1m2 - Extra hazard Occupancy : The protection area per sprinkler : 9.3m2

Density Selection (l/min)/m2 6.3

Calculated Area (m2) 139

1

2

Coverage per Sprinkler (m2)

Number of Sprinkler to be Calculate 4

12

4

12

4

6

Where:

Friction Loss Formula:

[Q/K]2 =

Q = l/min

K

75.6

79.1

Pf =

Where:

L x 6.05 x

10

11

12

13

14

15

Q1.85

x 105

1.85

xd

C

d (dia. mm) 100

Where:

K

81.961

l/min

p (bar/m) 1.0736493919

The K factor is determined by:

Where:

Q = l/min

Q/√p = p (bar/m)

length (m) 420

The flow increment in l/min to be added at a specific location: =

=

4.87

120

K= 9

bar/m

1200

79.1 8

0.913

Q = l/min

q = K√p 7

75.6

The total pressure (Pt) is determined by:

C 5

Flow in First Sprinkler (Q=l/min)

3

Pt = 3

Number of Sprinkler on Branch Line = (1.2√A)/distance

#DIV/0!

3.273

bar/m

Sprinkler Discharge Characteristics Identification Nominal Orifice Size (mm) 12.7 13.5 15.8

Orifice Type

K Factor

Standard Large Extra Large

5.3-5.8 7.4-8.2 11.0-11.5

K factor is the constant in the formula : Where: Q = Flow in gpm P = Pressure in PSI For SI unit: Where:

Qm = Km√Pm Q = Flow in l/min P = Pressure in bars Km = 14K

Percent of Nominal 1/2 in. Discharge 100 140 200 Q = K√P

Fittings & Valves 450 Elbow 900 Elbow Tee / Cross Butterfly Valve Gate Valve Swing Check Valve

Fittings and Valves Expressed in Equivalent Meter of Pipe 20 25 32 40 50 65 80 90 100 0.3048 0.3048 0.3048 0.6096 0.6096 0.9144 0.9144 0.9144 1.2192 0.6096 0.6096 0.9144 1.2192 1.524 1.8288 2.1336 2.4384 3.048 0.9144 1.524 1.8288 2.4384 3.048 3.6576 4.572 5.1816 6.096 1.8288 2.1336 3.048 3.6576 0.3048 0.3048 0.3048 0.3048 0.6096 1.524 2.1336 2.7432 3.3528 4.2672 4.8768 5.7912 6.7056

Equivalent Meter of Pipe 125 150 1.524 2.1336 3.6576 4.2672 7.62 9.144 2.7432 3.048 0.6096 0.9144 8.2296 9.7536

200 2.7432 5.4864 10.668 3.6576 1.2192 13.716

250 3.3528 6.7056 15.24 5.7912 1.524 16.764

300 3.9624 8.2296 18.288 6.4008 1.8288 19.812