26 
BULLETII^ 854, U. S. DEPAETME:N^T OF AGPJCULTUEE. 
Table 4. — Elements of experiments for concrete tile. 
•4-INCH TILE. 
1 
Test Xo. 
2 
Depth 
of 
flow. 
3 
d 
D 
4 
Area 
of 
flow. 
(«) 
5 

6 
Hy- 
draulic 
radius. 
Dis- 
charge. 
(Q) 
8 
Ve- 
locity. 
iV) 
9 
Slope. 
is) 
10 
Kutter 
coeffi- 
cient. 
in) 
11 
Chezy 
coeffi- 
cient. 
(CO 
4171 
Feet. 
0.328 
.282 
.247 
.206 
.167 
.118 
.311 
.274 
.239 
.210 
.163 
.118 
..323 
.271 
.243 
.215 
.162 
.124 
.323 
.295 
.271 
.243 
.211 
.160 
.118. 
.315 
.276 
.243 
.212 
.170 
.121 
.305 
.290 
.269 
.252 
.222 
.191 
.173 
.296 
.291 
.278 
.249 
.209 
.165 
..301 
.287 
.242 
.204 
.196 
.133 
.314 
.302 
.274 
.255 
.224 
.159 
.123 
1.00 
.86 
.75 
.63 
.51 
.36 
.95 
.84 
.73 
.64 
.50 
.36 
.S3 
.74 
.66 
.49 
.38 
.99 
.90 
.83 
.74 
.64 
.49 
.36 
.96 
.84 
.74 
.65 
.52 
.37 
.93 
.88 
.82 
.77 
.68 
.58 
.53 
.90 
.89 
.85 
.76 
.64 
.50 
.92 
.88 
.74 
.62 
.60 
.41 
.96 
.92 
.84 
.78 
.68 
.49 
.38 
Sq.ft. 
0.0b45 
.0773 
.0683 
.05.59 
.0432 
.0274 
.0828 
.0754 
.0660 
.0571 
.0419 
.0274 
.0842 
.0747 
.0671 
.0587 
.0410 
.0293 
.0842 
.0801 
.0747 
.0671 
.0575 
.0409 
.0274 
.0834 
. 0759 
.0671 
.0578 
.0442 
.0283 
.0819 
.0790 
.0742 
.0697 
.0609 
.0511 
.0452 
.0803 
.0792 
.0764 
.0688 
.0568 
.0426 
.0812 
.0784 
.0668 
.0552 
.0.396 
.0322 
.0833 
.0814 
.0754 
.0705 
.0615 
.0406 
.0290 
1.00 
.92 
.81 
.66 
.51 
.32 
.98 
.89 
.78 
.68 
.50 
.32 
.99 
.88 
.79 
.70 
.49 
-.35 
.99 
.95 
.88 
.79 
.68 
.48 
.32 
.99 
.90 
.79 
.68 
.52 
.34 
Q7 
.94 
.88 
.83 
.72 
.61 
.54 
.95 
.94 
.90 
.81 
.67 
.50 
.96 
.93 
.79 
.65 
.47 
.38 
.99 
.96 
.89 
.83 
.73 
.48 
.34 
Feet. 
0. 0S20 
.0993 
.0990 
.0930 
.0829 
.0649 
.0941 
.0997 
.0982 
. 0938 
.0817 
.0649 
.0890 
.0998 
.0986 
.0948 
.0814 
.0674 
.0886 
.0978 
.0998 
. 0986 
.0940 
.0807 
.0649 
.0928 
.0996 
.0986 
.0943 
.08.38 
.OGGl 
. 0959 
. 0985 
.0998 
.0994 
. 0961 
.0897 
.0&47 
.0976 
.0984 
.0995 
.0992 
.09.36 
.0823 
. 0967 
.09188 
. 0985 
. 0926 
.0793 
.0710 
.0931 
.09ti5 
.0997 
.0996 
.09t>4 
.0804 
. 0669 
Cu.ft. 
per sec. 
0. 0426 
.0386 
.0335 
.0196 
.0120 
2.0020 
.0650 
.0.550 
.0450 
.0375 
.0218 
.0083 
.0832 
.0800 
.0650 
.0544 
.0280 
.0127 
.1014 
.1041 
. 0969 
.0848 
.0591 
.0298 
.0130 
.1415 
.1235 
.0996 
.0788 
.0478 
.0200 
. 1775 
.1686 
.1459 
.1299 
.09.56 
.0696 
.0594 
.1931 
.1905 
.1686 
.1382 
. 1046 
.0622 
.2250 
.2124 
. 1656 
. 1377 
. 07(0 
.0416 
.2544 
.24.56 
.2236 
.1892 
. 1506 
. 0S48 
. 043S 
Feet 
per sec. 
0.504 
.499 
.491 
.315 
.278 
2.075 
.785 
.730 
.682 
.656 
.519 
.301 
.988 
1.071 
.968 
.927 
.673 
.434 
1.204 
1.300 
1.298 
1.263 
1.02s 
.727 
.475 
1.697 
1.627 
1.484 
1.364 
1.081 
.706 
2.168 
2.133 
1.968 
1. 866 
1.571 
1.362 
1.314 
2. 406 
2.404 
2.208 
2.008 
1.840 
1 401 
2.771 
2.709 
2.478 
2.492 
1.918 
1.293 
3. 056 
3.01s 
2. 9( 5 
2. 684 
2.449 
2.088 
1. 511 
0.0005 
.0005 
.0005 
.0005 
.0005 
.0005 
.0010 
.0010 
.0010 
.0010 
.0010 
.0010 
.0020 
.0020 
.0020 
.0020 
.0020 
.0020 
.0030 
.00.30 
.0030 
.0030 
.0030 
.0030 
.0030 
.0050 
.0050 
.0050 
.00.50 
.00.50 
.0050 
.0075 
.0075 
.0075 
.0075 
.0075 
.0075 
.0075 
.0100 
.0100 
.0100 
.0100 
.0100 
.0100 
.0125 
.0125 
.0125 
.0125 
.0125 
.0125 
.0150 
.0150 
. 0150 
.0150 
.0150 
.01.50 
.0150 
0107 
.0120 
.0122 
. 0160 
.0U>3 
2.0352 
.0110 
.0120 
.0124 
.0124 
. 0134 
.0172 
.0116 
.0117 
.0125 
.0126 
.0144 
.0175 
.0117 
.0117 
.0119 
.0120 
.0135 
. 0157 
.0185 
.0113 
.0121 
.0129 
.0133 
.0146 
.0171 
.0112 
.0116 
.0123 
.0127 
.0141 
.0150 
.0149 
.0117 
.0118 
.0125 
.0134 
.0138 
.0151 
.0114 
.0117 
.0124 
.0120 
. 0132 
. 0Ui3 
.0111 
.0114 
.0118 
. 0126 
.0128 
.0133 
.0150 
78.7 
418 
70 9 
419 
69.7 
420 
46.3 
421 
43.1 
422 
2 13.1 
4231..^ 
80 9 
424 
73.1 
425 
68.8 
426 
67.8 
427 
57.4 
428.. . 
37.4 
4291 . . 
74.1 
430 
75.8 
431 
432 
68.9 
67.3 
433 
52.8 
434 
37.4 
43.51 
436 
73.8 
75.9 
437 
75.0 
438 
73.4 
439 
61.2 
440 
441 
4421. 
46.7 
34.1 
78.8 
443 
72.9 
444 
445 . . 
66.8 
62.8 
446 
447 
4481 
449.. 
52.8 
38.9 
80.8 
78.5 
450 
71.9 
451 
68.3 
452 
58.5 
4.53 
52.5 
454 
52.1 
-455 
77.0 
456 
76.6 
457 
458 . 
70 
63.8 
459 
(>0.1 
460 
50.9 
4611 
'62«, 
79.7 
77.1 
463 
70 6 
464 
73.3 
465 
466 
60.9 
43.4 
4671 
81.8 
468.. 
79.3 
469 
76.7 
470 
69. 
471 
66.3 
472 
60.1 
473 . 
47.7 
1 These tests used in deriving forraulfe 26 and 28. 
2 Evidently an incorrect hook-gage reading. 
