THE FLOW OF WATER IN DRAIN TILE. 



23 



Table 3. — Elements of experiments for clay tile — Continued. 

 10-INCH TILE —Continued. 



Test No. 



2431 

 244.. 

 245.. 

 245.. 

 247.. 

 248.. 

 249.. 

 250.. 

 251. . 

 252.. 



2531 

 2541 

 2551 

 256.. 

 257.. 

 258.. 

 259.. 

 260.. 

 261 -. 

 262.. 

 263.. 

 264.. 



2651 

 2661 

 267.. 

 2681 

 2691 

 270.. 

 271.. 

 272.. 

 273.. 

 274.. 

 275.. 

 276.. 

 277.. 

 278.. 

 279.. 

 280.. 



2811 



2821 

 283.. 

 284.. 

 285.. 

 286. . 

 287.. 

 288.. 

 289, . 

 290.. 

 291. . 

 292.. 

 293.. 



2941 

 2951 

 296.. 

 297.. 

 298.. 

 299. . 

 300.. 

 301.. 

 302.. 

 303- . 

 304.. 

 305.. 

 306.. 



Depth 



of 

 flow. 



(i) 



Feet. 



0.782 

 .723 

 .681 

 .625 

 .572 

 .542 

 .466 

 .425 

 .313 

 .205 



.823 

 .797 

 .778 

 .694 

 .667 

 .623 

 .563 

 .525 

 .472 

 .428 

 .318 

 .203 



.827 

 .814 

 .810 

 .804 

 .796 

 .777 

 .756 

 .689 

 .684 

 .631 

 .563 

 .542 

 .484 

 .431 

 .328 

 .224 



.801 

 .801 

 .751 

 .701 

 .665 

 .647 

 .618 

 .565 

 .534 

 .470 

 .426 

 .307 

 .213 



.801 

 .796 

 .782 

 .748 

 .726 

 .684 

 .646 

 .564 

 .540 

 .487 



0.94 

 .87 

 .82 

 .75 

 .68 

 .65 

 .56 

 .51 

 .37 

 .25 



.95 

 .93 

 .83 

 .80 

 .75 

 .67 

 .63 

 .56 

 .51 

 .38 

 .24 



.99 



.97 

 .97 

 .96 

 .95 

 .93 

 .90 

 .82 

 .82 

 .76 

 .37 

 .65 

 .58 

 .52 

 .39 

 .27 



.96 



.96 

 .90 



•Area 



of 

 flow. 



(a) 



Sq.ft. 



0. 5339 

 .5045 

 .4788 

 .4401 

 .4002 

 .3766 

 .3145 

 .2803 

 .1876 

 .1044 



.5471 

 .5397 

 .5322 

 .4871 

 .4696 

 .4386 

 .3932 

 .3629 

 .3195 

 .2828 

 .1917 

 .1030 



.5479 

 .5449 

 .5438 

 .5421 

 .5393 

 .5318 

 .5221 

 .4840 

 .4808 

 .4444 

 .3932 

 .3766 

 .3294 

 .2853 

 .1998 

 .1183 



.5410 

 .5410 

 .5197 

 .4915 

 .4682 

 .4558 

 .4350 

 .3948 

 .3701 

 .3178 

 .2811 

 .1828 

 .1102 



.5410 

 .5393 

 .5339 

 .5181 

 .5063 

 .4808 

 .4551 

 .3939 

 .3749 

 .3318 

 .2669 

 .1860 

 .1198 



.311 

 .226 



i These tests used in deriving formulae 27 and 29. 



Hy- 

 draulic 

 radius. 



Feet. 

 0. 2431 

 .2526 

 .2544 

 .2520 

 .2459 

 .2406 

 .2231 

 .2112 

 .1704 

 .1206 



.2260 

 . 2385 

 .2441 

 .2542 

 .2543 

 .2518 

 .2444 

 .2370 

 .2248 

 .2121 

 .1724 

 .1196 



.2232 

 .2314 

 .2334 

 .2360 

 .2388 

 .2444 

 .2485 

 .2543 

 .2544 

 .2525 

 .2444 

 .2406 

 .2278 

 .2130 

 .1765 

 .1301 



.2371 



.2371 

 .2494 

 .2540 

 .2542 

 .2536 

 .2512 

 .2448 

 .2389 

 .2242 

 .2115 

 .1679 

 .1246 



.2371 



.2388 

 .2431 

 .2498 

 .2524 

 .2544 

 .2536 

 .2446 

 .2401 

 .2286 

 . 2060 

 .1696 

 .1311 



Dis- 

 charge. 



(Q) 



Cu.ft. 

 per sec. 



0. 8870 

 .8837 

 .8722 

 .7996 

 .7120 

 .6748 

 .5378 

 .4726 

 .2788 

 .1240 



1. 2680 



1.2680 



1.2520 



1. 2300 



1. 1840 



1. 1380 



1. 0090 



.9380 



.7964 



.6832 



.3841 



.1614 



1. 5300 



1. 5350 



1. 5350 



1.5250 



1.5180 



1.5140 



1.5020 



1. 4960 



1.4800 



1. 3960 



1. 2100 



1. 1240 



.9227 



.7450 



.4542 



.2173 



1. 9900 

 1. 9700 

 1. 9575 

 1. 9300 

 1.8400 

 1. 7975 

 1.6575 

 1.4700 

 1.3625 

 1. 0980 

 .9261 

 .5306 

 . 2568 



2. 3850 

 2.4120 

 2. 37C0 

 2. 37G0 

 2. 3400 

 2. 2590 

 2. 1330 

 1. 8150 

 1. 6925 

 1.4350 

 1. 0820 

 .6440 

 .3449 



Ve- 

 locity. 



(V) 



Feet 

 per sec. 

 1.661 

 1.752 

 1.822 

 1.817 

 1.780 

 1.792 

 1.710 

 1.686 

 1.486 

 1.188 



2.318 

 2.350 

 2.353 

 2.525 

 2.521 

 2.595 

 2.566 

 2.585 

 . 2.493 

 2.416 

 2.004 

 1.567 



2.793 

 2.817 

 2.823 

 2.813 

 2.815 

 2.847 

 2.877 

 3.091 

 3.078 

 3.141 

 3.077 

 2.985 

 2.801 

 2.611 

 2.274 

 1.836 



3.678 

 3.641 

 3.767 

 3.927 

 3.930 

 3.944 

 3.811 

 3.724 

 3.681 

 3.455 

 3.294 

 2.903 

 2.330 



4.409 

 4.473 

 4.450 

 4.586 

 4.623 

 4.699 

 4.687 

 4.608 

 4.515 

 4.325 

 4.054 

 3.462 

 2.879 



Slope. 

 (•) 



0. 0010 

 .0010 

 .0010 

 .0010 

 .0010 

 .0010 

 .0010 

 .0010 

 .0010 

 .0010 



.0020 

 .0020 

 .0020 

 .0020 

 .0020 

 .0020 

 .0020 

 .0020 

 .0020 

 .0020 

 .0020 

 .0020 



.0030 

 .0030 

 . 0030 

 .0030 

 .0030 

 .0030 

 .0030 

 .0030 

 .0030 

 .0030 

 .0030 

 .0030 

 .0030 

 .0030 

 .0030 

 .0030 



.0050 

 .0050 

 .0050 

 .0050 

 .0050 

 .0050 

 .0050 

 .0050 

 .0050 

 . 0050 

 .0050 

 .0050 

 .0050 



.0075 

 .0075 

 .0075 

 . .0075 

 .0075 

 .0075 

 .0075 

 .0075 

 .0075 

 .0075 

 .0075 

 .0075 

 .0075 



Kutter 

 coeffi- 

 cient. 



(n) 



0.0109 

 .0107 

 .0104 

 .0103 

 .0104 

 .0102 

 .0101 

 .0099 

 .0097 

 .0094 



.0106 

 .0108 

 .0110 

 .0106 

 .0106 

 .0104 

 .0102 

 .0100 

 .0100 

 .0099 

 .0101 

 .0099 



.0107 

 .0109 

 .0109 

 .0110 

 .0111 

 .0111 

 .0112 

 .0107 

 .0107 

 .0105 

 .0104 

 .0106 

 .0108 

 .0110 

 .0109 

 .0107 



.0110 



.0110 

 .0110 

 .0108 

 .0108 

 .0107 

 .0110 

 .0110 

 .0110 

 .0111 

 .0112 

 .0107 

 .0106 



.0111 

 .0110 

 .0112 

 .0111 

 .0111 

 .0110 

 .0110 

 .0109 

 .0110 

 .0110 

 .0109 

 .0110 

 .0109 



Chezy 

 coeffi- 

 cient. 



106.6 

 110.2 

 114.2 

 114.5 

 113.5 

 115.6 

 114.5 

 116.1 

 113.8 

 108.2 



109.0 

 107.6 

 106.5 

 112.0 

 111.8 

 115.6 

 116.1 

 118.8 

 117.6 

 117.3 

 107.9 

 101.4 



107.9 

 106.9 

 106.7 

 105.8 

 105.2 

 105.1 

 105.4 

 111.9 

 111.4 

 114.1 

 113.7 

 111.1 

 107.2 

 103.3 

 98.8 

 93.0 



106.8 

 105.8 

 106.7 

 110.2 

 110.2 

 110.7 

 107.5 

 106.5 

 106.5 

 103.2 

 101.3 

 108.2 

 93.3 



104.5 

 10X7 

 104.2 

 106.0 

 106.3 

 107.6 

 107.5 

 107.6 

 106.4 

 104.5 

 103.1 

 97.9 

 91.1 



