THE FLOW OF WATER IK CONCRETE PIPE. 
23 
Table 3. — Elements of experiments for the determination of friction losses in concrete 
pipes, running full; ivith retardation coefficients for various formulas — Continued. 
1 
2 
© 
3 
4 
© 
5 
6 
u 
© 
7 
8 
© 
Coefficients of retardation. 
9 
10 
11 
12 
13 
14 
© 
£2 
© n 
| 
© 
a 
«."S 
'©T3 
O 
© 
Pi 
E 
©^ 
"c3 
> 
© 
o 
cS 
© 
a 
Name and description of 
pipe. 
ft 
3 
© 
o 
© 
>> 
© 
A 
O 
™ . 
3 g 
S3 
O 
1 
% 
•© 
<z 
Q 
V 
H 
C s 
C 
Cw 
Cm 
n 
/ 
ins. 
cu.ft. 
feet. 
feet. 
21 
S47 
4 
23.5' "A'" lateral, Kamloo 
1.73 
.63 
.103 
.268! 88.4 
104.9 
.94 
.0134 
.0338 
1916 
2 
B. C, Canada; nomi- 
2.32 
.84 
.230 
.241} 78.8 
91.2 
.81 
.0154 
.0416 
3 
nally a 24-inch jointed 
2.65 
.97 
.296 
.243; 79.2 
91.2 
.81 
.0155 
.0408 
1 
cement pipe, but ob- 
structed by debris. 
3.63 
1.32 
.495 
.257 84.0 
94.3 
.82 
.0150 
.0367 
22 
S61 
1 
30.0 
Temescal Water Co., Co- 
3.25 
.67 
.094 
.261 87.3 
102.1 
1.03 
.0142 
.0339 
1916 
8 
rona, Calif.; inverted 
6.38 
1.31 
.384 
.2531 84.5 
93.6 
.92 
.0156 
.0359 
7 
siphon, jointed concrete 
8.23 
1.69 
.635 
.2541 84.9 
92.0 
.90 
.0156 
.0357 
6 
pipe, straight in align- 
8.28 
1.70 
.644 
.2531 85.0 
91.8 
.90 
.0156 
.0357 
5 
ment, sag in profile; laid 
8.38 
1.72 
.663 
.253 ! 84.3 
91.5 
.90 
.0157 
.0360 
4 
1911. 
8.38 
1.72 
.634 
.2581 86.4 
93.7 
.92 
.0154 
.0344 
3 
8.52 
1.75 
.700 
.250 83.7 
90.4 
.88 
.0158 
.0367 
2 
9.11 
1.87 
.806 
.249 83.5 
89.5 
.87 
.0159 
.0370 
23 
S34 
3 
30.0 
T>\ siphon, Umatilla pro- 
5.10 
1.04 
.150 
.320108.3 
123.1 
1.23 
.0123 
.0224 
1915 
2 
ject, IT. S. Reclamation 
8.74 
1.78 
.405 
.334 
112.0 
123.3 
1.22 
.0125 
.0206 
1 
Service, Oreg.; jointed 
concrete pipe. 
12.00 
2.45 
.745 
.339 
113.0 
122.1 
1.19 
.0125 
.0200 
24a 
N3 
2 
30.0 
Di siphon, same as Nq. 23 
16. 62 
3.39 
1.050 
.395 
132.0 
140.4 
1.37 
.0108 
.0147 
1911 
2 
above; tests made when 
17.04 
3.47 
1.050 
.404 
135.0 
143.7 
1.40 
.0106 
.0140 
1 
pipe was new and clean. 
17.70 
3.61 
1.070 
.416 
140.0 
148.0 
1.44 
.0103 
.0132 
25a 
N4 
1912 
1 
30.0 
R 3 siphon, Umatilla pro- 
ject, U. S. Reclamation 
Service, Oreg. 
13.40 
2.73 
.860 
.351 
118.0 
126.0 
1.23 
.0119 
.0186 
26 
S51 
6 
30.5 
Prosser pressure pipe, 
Sunnyside project, U. S. 
24.80 
4.88 
2.230 
.386 
129.4 
133.0 
1.28 
.0111 
.0154 
1916 
5 
25.60 
5.04 
2.653 
.366 
122.6 
125.1 
1.20 
.0116 
.0171 
1 
Reclamation Service, 
26.20 
5.15 
2.644 
.375 
125.8 
128.1 
1.23 
.0114 
.0163 
4 
Wash., jointed concrete 
26.60 
5.24 
2.869 
.365 
122.4 
124.8 
1.19 
.0116 
.0171 
7 
pipe reinforced, on con- 
28.80 
5.67 
3.805 
.343 
115.2 
115.9 
1.10 
.0123 
.0194 
3 
tinuous down grade, 
28.90 
5.68 
3.757 
.346 
116.2 
116.9 
1.11 
.0121 
.0191 
2 
straight and clean; laid 
1911. 
29.40 
5.78 
3.727 
.354 
118.7 
119.5 
1.14 
.0119 
.0183 
27a 
B 
1 
31.5 
Short experimental con- 
16.27 
3.01 
.673 
.424 
142.4 
153.2 
1.49 
.0104 
.0126 
1895 
2 
duit at Dijon, France, 
18.70 
3.46 
.925 
.416 
140.4 
148.6 
1.44 
.0106 
.0131 
3 
joints perfect, exceeding 
19.78 
3.65 
1.050 
.413 
139.5 
146.9 
1.42 
.0106 
.0133 
4 
smoothness indicated by 
22.71 
4.20 
1.375 
.418 
139.4 
145.7 
1.41 
.0107 
.0132 
5 
retardation factors. 
25.22 
4.72 
1.725 
.416 
140.5 
145.1 
1.38 
.0106 
.0131 
6 
25.93 
4.79 
1.750 
.419 
141.7 
146.1 
1.41 
.0106 
.0129 
7 
26.66 
4.92 
1.850 
.419 
141.5 
145.7 
1.40 
.0106 
.0129 
8 
31.49 
5.82 
2.575 
.420 
141.5 
144.0 
1.38 
.0106 
.0129 
9 
35.66 
6.59 
3.275 
.421 
142.3 
143.2 
1.36 
.0106 
.0128 
28 
S55 
o 
36.0 
Clavey siphon, Oakdale 
irg. dist., Calif., mono- 
12.70 
1.80 
.438 
.290 
99.3 
106.5 
1.04 
.0140 
.0260 
1916 
13.40 
1.89 
.330 
.351 
120.3 
130.6 
1.2S 
.0119 
.0178 
S54 
1916 
1 
lithic pipe, built with 
wood forms, continuous 
13.50 
1.91 
.464 
.298 
102.2 
109.4 
1.06 
.0137 
.0246 
28b 
2 
13.70 
1.94 
.581 
.270 
92.8 
98.4 
.95 
.0150 
.0300 
1 3 
down grade; built 1912. 
13.80 
1.95 
.587 
.271 
92.8 
98.5 
.95 
.0150 
.0299 
29 
S36 
1 
36.0 
Deer Flat Forest pipe line, 
Boise project, U. S'. 
24.60 
3.48 
1.170 
.343 
117.6 
121.2 
1.16 
.0123 
.0187 
1916 
Reclamation Service, 
Idaho. 
29b 
S36b 
1 
Same reach of same pipe 
38.60 
5.45 
2.072 
.403 
138.3 
139.4 
1.33 
.0110 
.0134 
1917 
2 
two years later; laid 1912; 
50.00 
7.12 
3.612 
.399 
136.5 
134.8 
1.26 
.0110 
.0137 
6 
straight in horizontal 
52.60 
7.44 
3.509 
.423 
145.2 
143.1 
1.35 
.0105 
.0123 
4 
alignment. 
58.10 
8.22 
5.328 
.379 
130.1 
126.2 
1.18 
.0115 
.0152 
5 
61.30 
8.66 
5.321 
.400 
137.2 
133.2 
1.25 
.0108 
.0136 
3 
64.10 
9.06 
5.30 
.419 
143.8 
139.6 
1.31 
.0105 
.0124 
30 
S49 
5 
42.0 
Victoria aqueduct, B. C, 
9.68 
1.01 
.076 
.354 
123.9 
139.6 
1.33 
.0112 
.0168 
1916 
6 
Canada; siphon No. 1, 
11.45 
1.19 
.097 
.370 
129.2 
144.2 
1.37 
.0113 
.0155 
7 
jointed concrete pipe, re- 
13.56 
1.41 
.136 
.370 
129.2 
142.4 
1.34 
.0111 
.0154 
8 
inforced; much curva- 
15.97 
1.66 
.179 
.380 
132.7 
144.5 
1.31 
.0110 
.0146 
1 
ture, extremely smooth 
16.84 
1.75 
.212 
.368 
128.5 
139.1 
1.34 
.0114 
.0156 
9 
interior, joints included; 
18.86 
1.96 
.253 
.377 
131.7 
141.6 
1.36 
.0112 
.0148 
2 
conditions unusually fa- 
21.55 
2.24 
.316 
.385 
134.9 
143.5 
1.32 
.0110 
.0142 
3 
vorable for experimen- 
24.34 
2.53 
.415 
.380 
132.8 
139.9 
1.28 
.0112 
.0146 
4 
tation; laid 1914. 
27.99 
2.91 
.530 
.387 
135.1 
141.0 
1.26 
.0111 
.0141 
