THE FLOW OF WATER IN DRAIN TILE. 
33 
Table 5. — Elements of exjjeriments for day tile poorly laid. 
10-INCH TILE. 
Test No. 
2 
3 
4 
5 
6 
7 
8 
9 
10 
Depth 
of flow. 
d 
D 
Area 
of fl-OW. 
a 
A 
Hy- 
draulic 
radius. 
Dis- 
charge. 
Ve- 
locity. 
Slope. 
Kutter 
coeffi- 
cient. 
id) 
(a) 
(R) 
(Q) 
(TO 
(s) 
in) 
Cu.ft. 
Feet 
Feet. 
Sq.ft. 
Feet. 
per sec. 
per sec. 
0.805 
0.96 
0.5423 
0.99 
0. 2355 
0. 5342 
0.985 
0. 0005 
0.0120 
.795 
.95 
.5389 
.98 
.2391 
.5679 
1.054 
.0005 
.0116 
.708 
.85 
.4957 
.90 
.2537 
.5465 
1.103 
.0005 
.0116 
.625 
.75 
.4401 
.80 
.2520 
.4934 
1.121 
.0005 
.0114 
.524 
.63 
.3621 
.66 
.2368 
.3780 
1.044 
.0005 
.0116 
.429 
.51 
.2837 
.51 
.2124 
.2924 
1.031 
.0005 
.0109 
.313 
.37 
.1876 
.34 
.1704 
.1602 
.854 
.0005 
.0111 
.214 
.25 
.1110 
.20 
.1251 
.0744 
.671 
.0005 
.0111 
.836 
1.00 
.5489 
1.00 
.2090 
.5102 
.929 
.0005 
.0117 
.791 
.95 
.5374 
.98 
.2405 
.5390 
1.003 
.0005 
.0120 
.712 
.85 
.4981 
.91 
.2535 
.5222 
1.048 
.0005 
.0120 
.620 
.74 
.4365 
.80 
.2514 
.4772 
1.093 
.0005 
.0116 
.532 
.64 
.3685 
.67 
.2385 
.4093 
1.111 
.0005 
.0111 
.417 
.50 
.2736 
.50 
.2087 
.2737 
1.000 
.0005 
.0111 
.311 
.37 
.1860 
.34 
.1696 
.1620 
.871 
.0005 
.0109 
.227 
.27 
.1206 
.22 
.1315 
.0780 
.647 
.0005 
.0117 
.831 
.99 
.5484 
.99 
.2173 
.7510 
1.370 
.0010 
.0118 
.799 
.96 
.5403 
.98 
.2378 
.7964 
1.474 
.0010 
.0118 
.697 
.83 
.4890 
.89 
.2541 
.7855 
1.607 
.0010 
.0115 
.628 
.75 
.4423 
.81 
.2523 
.7180 
1.624 
.0010 
.0113 
.547 
.65 
.3806 
.69 
.2415 
.6089 
1.600 
.0010 
.0111 
.422 
.51 
.2778 
.51 
.2103 
.4114 
1.481 
.0010 
.0109 
.324 
.39 
.1966 
.36 
.1749 
.2656 
1.351 
.0010 
.0105 
.234 
.28 
.1257 
.23 
.1349 
.1393 
1.108 
.0010 
.0105 
.835 
1.00 
.5488 
1.00 
.2106 
.7570 
1.379 
.0010 
.0115 
.786 
.94 
.5355 
.98 
.2421 
.7720 
1.442 
.0010 
.0121 
.697 
.83 
.4890 
.89 
.2541 
.7300 
1.493 
.0010 
.0121 
.619 
.74 
.4357 
.79 
.2513 
.6720 
1.542 
.0010 
.0117 
.537 
.64 
.3726 
.68 
.2395 
.5465 
1.467 
.0010 
.0119 
.433 
.52 
.2870 
.52 
. 2136 
.3720 
1.296 
.0010 
.0122 
.338 
.40 
.2080 
.38 
.1805 
.2222 
1.068 
.0010 
.0128 
.221 
.26 
,1161 
.21 
.1285 
.0768 
.662 
.0010 
.0149 
Chezy 
coeffi- 
cient. 
(C) 
825 
826 
827 
828 
829 
830 
831 
832 
833 
834 
835 
836 
837 
83S 
839 
840 
841 
842 
843 
844 
845 
846 
847 
848 
849 
850 
851 
852 
853 
854 
855 
856 
90.8 
96.4 
97.9 
99.9 
96.0 
100.0 
92.5 
81.8 
90.9 
91.5 
93.1 
97.5 
101.7 
97.9 
91.6 
79.8 
92.9 
95.6 
100.8 
102.2 
103.0 
102.1 
102.2 
95.4 
95.0 
92.7 
93.7 
97.3 
94.8 
88.7 
79.5 
58.4 
12-INCH TILE. 
857 
858. 
859 
860 
861 
862 
863 
864 
865 
866 
867 
868 
869 
870 
871 
872 
873 
874 
875 
876 
877 
878 
879 
880 
881 
0.951 
0.96 
0.7546 
0.99 
0. 2769 
0. 9193 
1.218 
0. 0005 
0.0112 
.877 
.89 
.7173 
.94 
.2954 
.8396 
1.171 
.0005 
.0121 
.731 
.74 
.6068 
.80 
.2965 
.6468 
1.066 
.0005 
.0130 
.643 
.65 
. 5272 
.69 
.2844 
.5342 
1.013 
.0005 
.0132 
.559 
.57 
.4466 
.59 
.2657 
.4335 
.971 
.0005 
.0131 
.463 
.47 
.3521 
.46 
.2365 
.2814 
.799 
.0005 
.0141 
.373 
.38 
.2646 
.35 
.2025 
.1512 
.571 
.0005 
.0166 
.916 
.93 
.7392 
.97 
.2882 
1. 2640 
1.710 
.0010 
.0117 
.789 
.80 
.6548 
.86 
.2999 
1.0450 
1.596 
.0010 
.0126 
.691 
.70 
.5714 
.75 
.2921 
.8492 
1.486 
.0010 
. 0132 
.594 
.60 
.4806 
.63 
.2742 
.6197 
1.289 
.0010 
.0142 
.483 
.49 
.3719 
.49 
.2432 
.3760 
LOU 
. 0010 
. 0159 
.386 
.39 
.2771 
.36 
.2078 
.2019 
.729 
.0010 
.0186 
.972 
.99 
.7609 
.99 
.2654 
1.7125 
2.251 
.0020 
.0119 
.926 
.94 
.7442 
.98 
.2856 
1. 6750 
2.251 
.0020 
.0124 
.799 
.81 
.6626 
.87 
.3000 
1.3940 
2.104 
.0020 
.0135 
.664 
.67 
.5469 
.72 
.2882 
1. 0125 
1.851 
.0020 
.0147 
.573 
.58 
.4602 
.60 
.2692 
.7435 
1.616 
.0020 
.0156 
.470 
.48 
.3591 
.47 
.2389 
.4634 
1.291 
.0020 
.0171 
.368 
.37 
.2599 
.34 
.2005 
.2363 
.909 
.0020 
.0200 
.782 
.79 
.6493 
.85 
.2997 
L6475 
2.538 
.0030 
.0138 
.672 
.68 
.5542 
.73 
.2896 
1. 2700 
2.293 
.0030 
.0145 
.557 
.57 
.4447 
.58 
.2651 
.8332 
1.874 
.0030 
.0161 
.457 
.46 
.3462 
.45 
.2344 
.5174 
1.495 
.0030 
.0177 
.360 
.37 
.2522 
.33 
.1973 
.2737 
L085 
.0030 
.0202 
103.5 
96.3 
87.6 
85.0 
84.2 
73.5 
56.8 
100.7 
92.2 
87.0 
77.9 
64.8 
50.6 
45, 
84.6 
77.8 
66.5 
56.4 
44.6 
166597°— 20— Bull. S54- 
