Environmental Engineering FOURTH EDITION

Water Supply 125

1000-

900 :

800 f

700 -

600 -

500 -

400 7

0 D vc S

3OoOz

3000 4

2000

10-

0-

7-

6-

5-

4

91

5oC

40-

30 1

v)

5- d Q

0.6 -

0.5

0.4 -

0.3 :

0.05 1

0.04 -

0.03 z

100:

90 -

80 -

70 -

60-

50 -

Figure 6-11. (continued)

may be reduced to single, equivalent pipes. The following examples are illustrative:

EXAMPLE 6.8. For the parallel pipes as shown in Fig. 6-12a, find the diameter of

equivalent pipe (length is assumed to be 1000 ft).

1. Loss of head through pipe 1 must always equal loss of head through pipe 2
   between points A and B.