30 BULLETII^ 854, U. S. DEPAKTMEN^T OF AGKICULTURE. 
Table 4. — Elements of experiments for concrete tile — Continued. 
10-INCH TILE— Continued. 
Test No. 
647' 
6481 
6491 
650. 
651. 
652- 
653. 
654. 
655. 
656. 
657. 
658. 
659. 
660' 
6611 
6621 
663. 
664. 
665. 
666. 
667. 
668. 
669. 
670. 
671. 
672. 
673. 
6741 
6751 
6761 
677. 
678. 
679. 
680. 
681. 
682. 
683. 
684. 
685- 
686. 
6871 
6881 
6891 
690. 
691- 
692. 
693. 
694. 
695. 
698. 
697. 
698. 
699. 
7001 
7011 
7021 
703. 
704. 
705. 
706. 
707. 
708. 
709. 
710. 
711. 
Depth 
of 
fiow. 
led. 
0.814 
.811 
.789 
.739 
.710 
.670 
.617 
.593 
.557 
.486 
.423 
.322 
.238 
.813 
.798 
.797 
.738 
.708 
.667 
.621 
.594 
.561 
.483 
.439 
.429 
.343 
.248 
.813 
.810 
.790 
.740 
.715 
.663 
.636 
.598 
.554 
.498 
.436 
.339 
.243 
.805 
.804 
.789 
.741 
.704 
.678 
.623 
.586 
.562 
.492 
.420 
.338 
.231 
.793 
.785 
.772 
.729 
.686 
.621 
.593 
.566 
.499 
.421 
.341 
.232 
0.98 
.98 
.95 
.89 
.86 
.81 
.75 
.72 
.67 
.59 
.51 
.39 
.29 
.98 
.97 
.96 
.77 
.72 
.67 
.60 
.53 
.41 
.29 
.97 
.97 
.95 
.90 
.85 
.82 
.75 
.71 
.68 
.60 
.51 
.41 
.28 
.96 
.75 
.72 
.68 
.60 
.51 
.41 
.28 
Area 
of 
flow. 
{a) 
Sq. ft. 
0. 5357 
.5351 
.5286 
.5068 
.4910 
.4664 
.4300 
.4124 
.3850 
.3283 
.2766 
.1936 
.1280 
.5355 
.5316 
.5313 
.5063 
.4899 
.4644 
.4329 
.4132 
.3881 
.3259 
.2898 
.2815 
.2106 
.1355 
. 5356 
.5349 
.5290 
.5073 
.4939 
.4619 
.4435 
.4161 
.3827 
.3381 
.2873 
.2074 
.1317 
. 5336 
. 5333 
.5287 
.5078 
.4875 
.4716 
.4343 
.4072 
.3889 
.3332 
.2741 
.2066 
.1227 
.5300 
.5272 
. 5222 
.5016 
.4766 
.4329 
.4124 
.3919 
.3389 
.2749 
.2090 
.1235 
.98 
.94 
.91 
.87 
.80 
.77 
.72 
.61 
. 51 
.36 
.24 
.94 
.91 
25 
Hy- 
draulic 
radius. 
Fed. 
0. 2241 
.2262 
. 2360 
. 2475 
. 2505 
. 2519 
.2493 
.2466 
.2419 
.2273 
.2097 
.1736 
.1366 
.2248 
.2326 
.2330 
.2476 
.2506 
.2518 
.2497 
.2467 
.2425 
. 2265 
.2145 
.2115 
.1819 
.1413 
.2248 
.2267 
.2356 
.2473 
.2501 
.2517 
.2508 
.2472 
.2413 
.2300 
.2136 
.1804 
.1390 
.2294 
.2299 
.2360 
. 2471 
.2509 
.2518 
.2498 
.2458 
.2427 
.2286 
.2088 
.1800 
.1332 
.2346 
.2373 
.2411 
.2488 
.2516 
.2497 
.2466 
. 2434 
.2302 
.2091 
.1812 
.1337 
Dis- 
charge. 
(Q) 
Cu.ft. 
per see. 
0. 7240 
.7510 
.7780 
.7615 
.7360 
.6930 
.6278 
. 5954 
. 5354 
. 4462 
.3650 
.1998 
.1110 
1.1160 
1. 1020 
1. 1360 
1. 0960 
1. 0600 
1.0105 
.9448 
.8639 
. 7996 
. 6251 
. 5186 
.4982 
. 3250 
.1437 
1. 3400 
1. 3380 
1. 3800 
1. 3450 
1. 3280 
1. 2360 
1. 1800 
1. 0760 
.9586 
.8092 
.6332 
.3791 
.1853 
1.7650 
1. 7350 
1.7350 
1. 7300 
1. 6825 
1. 6250 
1. 4800 
1.3450 
1. 2480 
.9930 
.7345 
.4934 
.2222 
1. 7600 
1. 7400 
1.7175 
1.7100 
1.6250 
1. 4840 
1. 3400 
1. 2460 
.9949 
.7315 
.4887 
.223G 
Ve- 
locity. 
( T-) 
Fed 
per sec. 
1. 351 
1.403 
1.472 
1.503 
1.499 
1.486 
1.460 
1. 444 
1.391 
1.359 
1.320 
1.032 
2.084 
2.073 
2.138 
2. 165 
2.164 
2.176 
2.183 
2.091 
2. 060 
1.918 
1.790 
1.770 
1.543 
1.060 
2.502 
2.502 
2.609 
2.651 
2.689 
2.676 
2.661 
2. 584 
2. 505 
2.393 
2.205 
1.828 
1.407 
3.308 
3. 2.53 
3.282 
3.407 
3.451 
3.446 
3.408 
3.303 
3.209 
2.980 
2.680 
2.388 
1.810 
3.321 
3. 300 
3.289 
3.409 
3.410 
3.428 
3.249 
3.179 
2.936 
2.661 
2.338 
1.811 
Slope. 
0. 0010 
.0010 
.0010 
.0010 
.0010 
.0010 
.0010 
.0010 
.0010 
.0010 
.0010 
.0010 
.0010 
.0020 
.0020 
.0020 
.0020 
.0020 
.0020 
.0020 
.0020 
.0020 
.0020 
.0020 
.0020 
.0020 
.0020 
Kutter 
coeT- 
cient. 
(7Z) 
Chezy 
coeffi- 
cient. 
0.0121 
.0119 
.0117 
.0119 ! 
.0120 
.0121 I 
.0121 
.0122 
.0124 [ 
.0122 
.0119 
.0128 
.0126 
.0114 
.0117 
.0115 
.0118 
.0119 
.0119 
.0118 
.0121 
.0121 
.0123 
. 0125 
.0125 
.0127 
.0145 
0050 
0050 
,0050 
0050 
, 0050 
0050 
0050 
,0050 
,0050 
,0050 
, 0050 
,0050 
,0050 
0050 
,0050 
,0050 
,0050 
,0050 
,0050 
,0050 
,0050 
,0050 
,0050 
,00.50 
,0050 
0030 
.0117 
0030 
.0117 
0030 
.0116 
0030 
.0118 
0030 
.0117 
0030 
.0118 
0030 
.0119 
0030 
.0120 
0030 
.0122 
0030 
.0123 
0030 
.0125 
0030 
.0130 
0030 
.0136 
.0116 
.0118 
.0119 
.0119 
.0119 
.0119 
.0120 
.0121 
.0123 
.0126 
.0129 
.0129 
.0133 
.0117 
.0119 
.0120 
.0119 
.0120 
.0119 
.0123 
.0124 
.0128 
.0130 
.0132 
.0134 
These tests used in deriving formula; 2G and 28. 
