THE FLOW OF WATER IN DRAIN TILE. 



29 



Table 4.- — Elements of experiments for concrete tile — Continued. 

 8-INCH TILE— Continued. 



Test No. 



5851. 

 5861. 

 587.. 



589. 

 590. 

 591. 

 592. 



5931. 

 5941. 

 595.. 

 596.. 

 597.. 



599. 

 600. 

 601- 



6021. 

 6031. 

 604.. 

 605.. 

 606.. 

 607.. 



6101. 

 6111. 

 612.. 

 613.. 

 614.. 

 615.. 

 616. . 

 617- - 



6181. 

 6191. 

 620.. 

 621.. 

 622.. 

 623.. 

 624.. 

 625.. 

 626.. 



6271. 

 628 1. 

 629.. 

 630.. 

 631.. 

 632.. 

 633.. 

 634.. 



Depth 



of 

 flow. 



(d) 



Feet. 



0.643 

 .623 

 .553 

 .489 

 .445 

 .341 

 .262 

 .182 



.647 

 .628 

 .623 

 .566 

 .512 

 .443 

 .318 

 .270 



.647 

 .633 

 .546 

 .495 

 .442 

 .335 

 .260 

 .170 



.645 

 .642 

 .559 

 .464 

 .415 

 .309 

 .225 

 .153 



.642 

 .600 

 .593 

 .553 

 .487 

 .426 

 .324 

 .244 

 .163 



.634 

 .616 

 .545 



.482 

 .414 

 .323 

 .245 

 .165 



0.98 

 .95 

 .84 

 .74 

 .68 

 .52 

 .40 

 .28 



.95 

 .95 

 .86 

 .78 

 .67 

 .48 

 .41 

 .29 



Area 



of 

 flow. 



(a) 



Sq. ft. 



0.3385 

 .3334 

 .3053 

 .2712 

 .2449 

 .1780 

 .1263 

 .0767 



.3392 

 .3349 

 .3334 

 .3115 

 .2841 

 . 2437 

 .1629 

 .1315 



.3392 

 .3362 

 .3019 

 .2746 

 .2431 

 .1741 

 . 1250 

 .0697 



.3389 

 . 3383 

 .3082 

 . 2565 

 .2261 

 .1570 

 .1028 

 .0601 



.3383 

 .3257 

 .3229 

 .3054 

 .2701 

 .2331 

 . 1668 

 .1148 

 .0656 



.3365 

 .3313 

 .3015 

 .2671 

 .2255 

 .1662 

 .1155 

 .0668 



0.99 

 .98 

 .90 

 .80 

 .72 

 .52 

 .37 

 .23 



. 92 

 .83 

 .72 

 .48 

 .39 

 .24 



.99 

 .99 

 .89 



.81 

 .71 

 .51 

 .37' 



.21 



. 91 

 .75 

 . 66 

 .46 

 .30 

 .18 



.99 



.97 



.49 

 .34 



.19 



Hy- 



draulic 

 radius. 



(R) 



Feet. 

 0. 1813 

 .1894 

 .2001 

 .1981 

 .1928 

 .1682 

 . 1405 

 .1051 



.1789 

 .1877 

 .1894 

 .1993 

 .1999 

 .1924 

 .1609 

 .1436 

 .1085 



.1790 

 .1860 

 .2003 

 .1988 

 .1922 

 .1664 

 .1397 

 .0992 



.1803 

 .1818 

 . 1998 

 .1954 

 .1870 

 .1579 

 . 1250 

 .0906 



.1818 

 .1950 

 .1962 

 .2001 

 .1979 

 .1893 

 .1629 

 .1332 

 .0957 



.1856 

 .1915 

 . 2003 

 .1974 

 .1868 

 .1626 

 .1336 

 .0967 



Dis- 

 charge. 



(Q) 



Cu.ft. 



per sec. 

 0. 7870 

 .7750 

 .7240 

 .6224 

 .5440 

 .3354 

 .1886 

 .0824 



1.0105 

 1.0164 

 .9930 

 .9108 

 .8028 

 .6440 

 .3610 

 .2608 

 .1140 



1.1900 

 1.2280 

 1.0880 

 .9658 

 .8204 

 .5042 

 .3096 

 .1215 



1.3580 



1.3630 



1. 2680 



1.0470 



.8788 



.5318 



.2899 



.1283 



1.5120 



1.4880 



1.4700 



1. 4080 



1. 2040 



.9928 



.6224 



.3620 



.1602 



1.6450 



1.6425 



1.5060 



1.2900 



1.0140 



. 6524 



.3625 



.1879 



Ve- 

 locity. 



Feet 

 per sec. 

 02. 325 

 2.324 

 2.371 

 2.295 

 2.221 

 1.884 

 1.492 

 1.075 



2.979 

 3. 035 

 2.978 

 2.924 

 2.825 

 2.642 

 2.216 

 1.983 

 1.411 



3.508 

 3.652 

 3.603 

 3. 517 

 3.375 

 2.896 

 2.476 

 1.743 



4.007 

 4.030 

 4.114 

 4.082 

 3.886 

 3.388 

 2.820 

 2. 156 



4.470 

 4.569 

 4.553 

 4.611 

 4.459 

 4.260 

 3.731 

 3.153 

 2.441 



4.889 

 4.959 

 4.996 

 4.829 

 --4. 500 

 3.926 

 3.399 

 2.813 



Slope. 



0.0030 

 .0030 

 .0030 

 .0030 

 .0030 

 .0030 

 .0030 

 . 0030 



.0050 

 .0050 

 .0050 

 .0050 

 .0050 

 .0050 

 .0050 

 .0050 

 .0050 



.0075 

 .0075 

 .0075 

 .0075 

 .0075 

 .0075 

 .0075 

 .0075 



.0100 

 .0100 

 .0100 

 .0100 

 .0100 

 .0100 

 .0100 

 .0100 



.0125 

 .0125 

 .0125 

 .0125 

 .0125 

 .0125 

 .0125 

 .0125 

 .0125 



.0150 

 .0150 

 .0150 

 .0150 

 .0150 

 .0150 

 .0150 

 .0150 



Kutter 

 coeffi- 

 cient. 



(r0 



0.0109 

 .0112 

 .0114 

 .0116 

 .0118 

 .0123 

 .0131 

 .0140 



.0109 

 .0110 

 .0113 

 .0117 

 .0121 

 .0124 

 .0128 

 . 0130 

 .0141 



.0112 

 .0112 

 .0117 

 .0118 

 .0120 

 .0122 

 .0125 

 .0132 



.0114 

 .0114 

 .0117 

 .0117 

 .0118 

 .0119 

 .0120 

 .0120 



.0115 

 .0118 

 .0118 

 .0118 

 .0120 

 .0121 

 .012! 

 .0123 

 .0122 



.0116 

 .0115 

 .0118 

 .0420 

 .0122 

 .0126 

 . 0123 

 .0120 



Chezy 

 coeffi- 

 cient. 



(C) 



99.7 

 97.5 

 96.8 

 94.1 

 92.4 

 83.9 

 72.7 

 60. i 



99.6 

 99.1 

 96.8 

 92.7 

 89.4 

 85.2 

 78.1 

 74.0 

 60.6 



95.8 

 97.0 

 93.0 

 91.1 

 88.9 

 82.0 

 76.5 

 63.9 



94.4 

 94.5 

 92.1 

 92.3 

 89.9 

 85.3 

 79.8 

 71.0 



93.8 

 92.5 

 91.9 

 92.2 

 89.6 

 87.6 

 82.7 

 77.3 

 70.6 



92.7 

 92.5 

 91.1 



88.7 

 85.0 

 79.5 

 75.9 

 73.9 



10-INCH TILE. 



6351 

 6361 

 637. 

 638. 

 639. 

 640. 

 641. 

 642. 

 643. 

 644. 

 645. 

 646- 



0.818 



0.99 



0. 5366 



0.99 



0.2213 



0. 4818 



0.898 



0.0005 



0. 0125 



.783 



.95 



.5265 



.98 



.2379 



.5150 



.978 



.0005 



.0122 



.739 



.89 



.5068 



.94 



.2475 



.5114 



1.009 



.0005 



.0122 



.706 



.85 



.4887 



.91 



.2508 



.4910 



1.005 



.0005 



.0123 



.666 



.81 



.4638 



.86 



.2518 



.4429 



.955 



.0005 



.0128 



.616 



.75 



.4293 



.80 



.2491 



.4324 



1.007 



.0005 



.0122 



.579 



.70 



. 4018' 



.75 



.2451 



.4188 



1.042 



. 00Q5 



.0118 



.551 



.67 



.3803 



.71 



.2408 



.3668 



.962 



.0005 



.0124 



.474 



.57 



.3186 



.59 



.2243 



.2780 



.873 



.0005 



.0129 



.416 



.50 



.2708 



.50 



.2076 



.2408 



.889 



.0005 



.0122 



.323 



.39 



.1944 



.36 



.1741 



.1470 



.756 



.0005 



.0123 



.241 



.29 



.1302 



.24 



.1380 



.0832 



.639 



.0005 



.0122 



85.4 

 89.7 

 90.7 

 89.7 

 8S.1 

 90.3 

 94.1 

 87.7 

 82.4 

 87.3 

 81.1 

 77.0 



1 These tests used in deriving formulae 26 and 28. 



