THE FLOW OF WATER m CONCRETE PIPE. 
25 
Table 4. — Summary of series of experiments upon concrete pipes running full, including 
individual pipe equations. To be considered as supplementary to table S. 
1 
Pipe 
No. 
2 
Experimenter. 
3 
Age 
of 
pipe. 
4 
Maxi- 
mum 
pres- 
sure 
head. 
5 
Diam- 
eter of 
bore. 
6 
Diam- 
eter of 
bore. 
7 
Length 
of reach 
tested. 
8 
Area of 
bore. 
9 
Range of 
velocities. 
10 
Individual pipe 
equations. 
1 
Years. 
30 
27 
10 
30 
30 
4 
15 
"'"32" 
32 
32 
2 
2 
Feet. 
7 
5 
5 
4 
4 
8 
5 
8 
4 
2 
2 
18 
18 
11 
3 
10 
6 
80 
Inches. 
8.0 
10.0 
10.0 
12.0 
12.0 
12.0 
12.0 
11.8 
16.0 
16.0 
16.0 
16.0 
16.0 
18.0 
18.0 
19.7 
19.7 
20.0 
20.0 
23.8 
24.0 
29.9 
30.0 
30.0 
30.0 
30.5 
31.5 
36.0 
36.0 
36.0 
36.0 
42.0 
42.0 
46.0 
46.0 
48.0 
54.0 
63.5 
86.6 
110.0 
120.0 
174.0 
174.0 
Feet. 
0.67 
.83 
.83 
1.00 
1.00 
1.00 
1.00 
.98 
1.33 
1.33 
1.33 
1.33 
1.33 
1.50 
1.49 
1.64 
• 1.64 
1.66 
1.67 
1.98 
2.00 
2.49 
2.50 
2.50 
2.50 
2.54 
2.62 
3.00 
3.00 
3.00 
3.00 
3.50 
3.50 
3.82 
3.83 
4.00 
4.54 
5.29 
7.22 
Feet. 
1,310.9 
1,107.0 
936.2 
621.1 
182.8 
217.8 
869.4 
1, 850. 8 
785.0 
853.8 
1,897.6 
Sq.ft. 
0.349 
.545 
.545 
.785 
.785 
.785 
.785 
.762 
1.396 
1.396 
1.396 
1.396 
1.396 
1.767 
1.703 
2.106 
2.106 
2.166 
Ft. per sec. 
3. 51- 3. 56 
2. 02- 2. 10 
4. 75- 4. 87 
1. 60- 1. 61 
1. 50- 3. 63 
5.85 
1. 92- 2. 00 
1. 29- 1. 55 
0. 98- 1. 16 
1. 72- 2. 44 
1.72 
2. 68- 3. 49 
2.45 
1. 97- 2. 15 
.96 
. 37- 1. 48 
. 63- 1. 96 
. 99- 2. 54 
. 95- 4. 04 
1. 55- 1. 95 
. 63- 1. 32 
. 67- 1. 87 
1. 04- 2. 45 
3. 39- 3. 61 
2.73 
4. 88- 5. 78 
3. 00- 6. 59 
1. 80- 1. 89 
1. 91- 1. 95 
3.48 
5. 45- 9. 06 
1. 01- 2. 91 
. 99- 2. 59 
1.41- 3.17 
3. 98- 4. 21 
3.77 
4.99 
3. 02- 6. 39 
1. 43- 4. 08 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12a 
do 
do 
do 
do 
do 
do 
do 
do 
do 
do 
77= 0.7406 W« 
77= 0.3464 Fi.985. 
13a 
do 
Scobey 
14 
1,271.5 
559.3 
1,116.0 
771.8 
2,163.2 
15 
16 
17 
18 
19 
do 
do 
do 
do 
3" 
4 
4 
77= 0.3727 Fi.863. 
77= 0.2484 Fi.981. 
77= 0.2116 W*>. 
77- 0.2186 Fi.sos. 
20 
Scobey " 
3 
5 
4 
5 
1 
4 
4 
New. 
3 
3 
3 
5 
1 
1 
5 
1-2 
4 
7 
7 
New. 
40 
7 
8 
45 
45 
25 
50 
"""36" 
30 
70 
70 
65 
*"iio 
110 
25 
60 
40 
38 
Var. 
65 
710 
710 
1,046.2 
2,306.5 
880.0 
5, 026. 4 
3.079 
3.142 
4.870 
4.909 
21 
22 
23 
24a 
do 
do 
do 
77=0.2978 W'8. 
77= 0.2272 F2.054. 
#=0.1394F1.862. 
25a 
do 
Scobey 
26 
2,276.3 
131.0 
1,933.6 
1,266.0 
7,282.0 
7, 285. 
1,336.1 
378.0 
9, 774. 
9,831.0 
4, 242. 3 
2, 167. 4 
1, 138. 
4,200.0 
5.075 
5.413 
7.070 
7.070 
7.070 
7.070 
9.620 
9.620 
11. 520 
12.576" 
16. 188 
21. 979 
40. 919 
72=0.01478 F3.i£0. 
27a 
Bazin 
77=0.0811 Fi.97i. 
28 
Scobey 
28b 
29 
29b 
do 
do 
do 
77- 0.0497 W*. 
30 
do 
77=0.0711 yi.sss. 
31 
32 
do 
do 
77=0.0432^2.423. 
77=0.0456 W«. 
33a 
33b 
Scobey 
34 
do 
35 
36a 
do 
77=0.0787 Woo. 
77= 0.03345 W12. 
37a 
38 
Scobey 
3 
New. 
New. 
4 
10.00 
14.50 
14.50 
18.00 
857.4 
8,419.0 
13,941.0 
6,466.0 
78. 540 
165. 130 
165. 130 
254. 560 
2. 84- 3. 03 
1. 58- 4. 67 
1. 58- 4. 67 
4. 00-20. 00 
39a 
Moore 
77=0.01113 W09. 
40a 
41a 
do 
Johnston 
77=0.01203 F2.029. 
77-0.0082 W 3 . 
DESCRIPTION OF PIPES. 
The descriptions in the following pages are to be taken as supple- 
menting Tables 3 and 4. The methods of determining the hydraulic 
elements necessary for each observation are described. The descrip- 
tions of pipes upon which previous experimenters have made obser- 
vations are given in the appendix. 
No. 1, Experiment S-19. — 8-inch jointed cement pipe, Irrigation 
Co. of Pomona, Calif. — This length of pipe line, between boxes 86 
and 89 on Reservoir Street, near Pomona, is straight in both vertical 
and horizontal alignment. From an examination of its inlet it is 
probably safe to say that joints in this, as in so many other of the 
older pipes, were not as carefully made as they are at present. 
Water columns were used for both gauges, No. 1 being attached to 
a brass piezometer tube of type A, thrust 5.8 feet down the 8-inch 
pipe from the 24-inch riser pipe similar to the one in Plate III, figure 
