Page 308 - Facility Piping Systems Handbook for Industrial, Commercial, and Healthcare Facilities

SITE UTILITY SYSTEMS

6.30 CHAPTER SIX

100 96 0.0001
90
90 2.0
84
80 78
70 72 0.0002
60 66 0.0003
60
50 0.0004
54 0.0005
0.0006
40 48 0.0007 3.0
0.0008
42 0.001
30 36
Quantity in cubic feet per second 24 0.004 Slope ratio in feet per foot Velocity in feet per second 5.0

30
20 33 0.002 4.0
0.003
27
0.005
0.006
21
0.008
10 18 Pipe diameter in inches 0.007 6.0
0.01
9
8 15 7.0
7 0.02
6 12
0.03 8.0
5 0.04
10
0.05 9.0
0.06
4 0.07
8 0.08 10.0
0.1
3
11.0
6
0.2
2
0.3
0.4
0.5
0.6
0.7
0.8
1.0 1.0

Value of n 0.008 0.010 0.011 0.012 0.013 0.015 0.019 0.021 0.024
Conversion factor
for discharge 1.62 1.30 1.18 1.08 1.00 0.87 0.68 0.62 0.54
and velocity
FIGURE 6.17 Pipe flow chart. Diagram for solution of Manning formula for circular pipes
flowing full (n = 0.013)

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