THE FLOW OF WATER IN DRAIN TILE. 



21 



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

 6-INCH TILE. 



1 . 



Test No. 



2 



Depth 



of 

 flow. 



3 



d 

 D 



4 



Area 



of 

 flow. 



(a) 



5 



a 

 A 



6 



Hy- 

 draulic 

 radius. 



(U) 



7 



Dis- 

 charge. 



(Q) 



8 



Ve- 

 locity. 



(V) 



9 

 Slope. 



w 



10 



Kutter 

 coeffi- 

 cient. 



(») 



11 



Chezy 

 coeffi- 

 cient. 



(O 



130 1 



Feet. 



0.517 

 .402 

 .300 

 .223 

 .188 



.510 

 .396 

 .304 

 .221 

 .171 



.498 

 .409 

 .277 

 .216 

 .157 



.508 

 .414 

 .302 

 .222 

 .167 



.498 

 .378 

 .276 

 .213 

 .152 



.473 

 .385 

 .258 

 .199 

 .147 



.461 

 .336 

 .222 

 .191 

 .141 



.405 

 .343 

 .260 

 .204 

 .147 



.392 

 .333 

 .233 

 .175 

 .140 



1.00 

 .78 

 .58 

 .43 

 .36 



.98 

 .76 

 .59 

 .43 

 .33 



.96 

 .79 

 .53 

 .42 

 .30 



.98 

 .80 

 .58 

 .43 

 .32 



.96 

 .73 

 .53 

 .41 

 .29 



.91 



.74 

 .50 

 .38 

 .28 



.89 

 .65 

 .43 

 .37 

 .27 



.78 

 .66 

 .50 

 .39 

 .28 



.76 

 .64 

 .45 

 .34 

 .27 



Sq.ft. 



0.2110 

 .1756 

 .1266 

 .0868 

 .0692 



.2103 

 .1730 

 .1286 

 .0858 

 .0607 



.2083 

 .1786 

 .1148 

 .0832 

 .0540 



. 2100 

 .1807 

 .1276 

 .0863 

 .0588 



.2083 

 .1649 

 . 1143 

 .0817 

 .0516 



.2020 

 .1681 

 .1049 

 .0746 

 .0493 



.1983 

 .1448 

 .0863 

 .0706 

 .0465 



.1769 



.1482 

 .1060 

 .0771 

 .0492 



.1712 



.1433 

 .0920 

 .0627 

 .0460 



1.00 

 .83 

 .60 

 .41 

 .33 



.99 

 .82 

 .61 

 .41 

 .29 



.99 

 .85 

 .54 

 .39 

 .26 



.99 

 .86 

 .61 

 .41 



.28 



.99 

 .78 

 .54 

 .39 

 .24 



.96 

 .80 

 .50 

 .35 

 .23 



.94 

 .69 

 .41 

 .33 

 .22 



.84 

 .70 

 .50 

 .37 

 .23 



.81 

 .68 

 .44 

 .30 

 .22 



Feet. 

 0.1319 

 .1573 

 .1412 

 .1170 

 . 1031 



.1404 

 .1569 

 .1422 

 .1163 

 .0958 



.1465 

 .1576 

 . 1350 

 .1144 

 .0893 



.1418 

 .1577 

 .1417 

 .1167 

 .0939 



.1465 

 .1552 

 .1347 

 .1133 



.0870 



.1534 

 .1560 

 .1292 

 .1077 

 .0846 



.1554 

 .1491 

 .1167 

 .1044 

 .0817 



.1574 

 . 1505 

 .1299 

 .1097 

 .0846 



.1567 

 . 1485 

 .1207 

 .0975 

 .0812 



Cu.ft. 

 per sec. 



0.1614 

 .1404 

 .0724 

 .0397 

 .0225 



.2229 

 .1578 

 .1255 

 .0706 

 .0372 



.3563 

 .2680 

 .1801 

 .1090 

 .0559 



.4282 

 .3620 

 .2194 

 .1382 

 .0685 



.5540 

 .4440 

 .2771 

 .1512 

 .0664 



.6804 

 .5390 

 .2771 

 .1692 

 .0969 



.7630 

 .5174 

 .2560 

 .1608 

 .0864 



.8028 

 . 6346 

 .3894 

 .2600 

 .1185 



.8771 

 .6650 

 .3592 

 .2243 

 .0872 



Feet 

 per sec. 

 0.765 

 .800 

 .572 

 .457 

 .325 



1.060 

 .912 

 .976 

 .823 

 .613 



1.710 



1.500 

 1.569 

 1.310 

 1.036 



2.039 

 2.003 

 1.719 

 1.601 

 1.165 



2. 659 



2.692 

 2.425 

 1.850 

 1.287 



3.368 

 3.206 

 2.641 

 2. 268 

 1.967 



3.847 

 3.575 

 2.966 

 2.278 

 1.860 



4.538 

 4.281 

 3.674 

 3.371 

 2.409 



5.122 

 4.641 

 3.904 

 3.579 

 1.896 



0.0005 

 .0005 

 .0005 

 .0005 

 .0005 



.0010 

 .0010 

 .0010 

 .0010 

 .0010 



.0020 

 .0020 

 .0020 

 .0020 

 .0020 



.0030 

 .0030 

 .0030 

 .0030 

 .0030 



.0050 

 .0050 

 .0050 

 .0050 

 .0050 



.0075 

 .0075 

 .0075 

 . 0075 

 .0075 



.0100 

 .0100 

 .0100 

 .0100 

 .0100 



.0125 

 .0125 

 .0125 

 .0125 

 .0125 



.0150 

 .0150 

 .0150 

 .0150 

 .0150 



0. 0103 

 .0111 

 .0134 

 .0141 

 .0165 



.0111 

 .0132 

 .0119 

 .0120 

 .0132 



.0104 

 .0119 

 .0105 

 .0110 

 .0112 



.0104 

 .0112 

 .0118 

 .0112 

 .0123 



.0106 

 .0108 

 .0108 

 .0119 

 .0131 



.0106 

 .0111 

 . 0115 

 .0116 

 .0112 



.0107 

 .0111 

 .0111 

 .0126 

 .0126 



.0104 

 .0106 

 .0109 

 .0105 

 .0116 



.0102 

 .0106 

 .0107 

 .0101 

 .0142 



94.2 



131 



90 1 



132 



68 



133 



59.7 



134 



45 3 



13 1 



89 5 



136 '. 



72 8 



137 



81 8 



138 



76 3 



139 



62.6 



140 • 



99 9 



141 



84.5 



142 



95 5 



143 



86 6 



144 



77.5 



145 i 



98 8 



146 



92 1 



147 



83.4 



148 



85.6 



149 



69.4 



150 1 



98 2 



151 



96.6 



152 



93 5 



153 



77.7 



154 



61.7 



1551 



99.3 



156 



93.7 



157 



84.9 



158 



79 8 



159 



78.1 



160 



97.6 



161 



92 6 



162 



86.8 



163 



70.5 



164 



65.1 



165 



102.3 



166 



98.7 



167 



91.2 



168 



91.0 



169 



74.1 



170 



105.7 



i7i : 



98.3 



172 



91.7 



173 



93.6 



174 



54.3 







8-INCH TILE. 



1751. 

 1761 

 177.. 

 178.. 

 179. . 

 180., 



1811. 

 1821 

 183. 



184. 

 185. 

 186. 



0.673 



0.98 



0.3670 



0.99 



0. 1862 



0.3240 



0.883 



0. 0005 



0.0114 



.664 



.97 



.3652 



.99 



.1911 



.3260 



.893 



.0005 



.0115 



.515 



.75 



.2972 



.81 



.2067 



.2540 



.885 



. 0005 



.0122 



.342 



.50 



.1839 



.50 



.1711 



.1370 



.745 



.0005 



,0123 



.259 



.38 



.1277 



.35 



.1406 



.0840 



.658 



.0005 



.0120 



.166 



.24 



.0689 



.19 



.0978 



.0363 



.527 



.0005 



.0114 



.656 



.96 



.3631 



.99 



.1944 



.4570 



1.259 



.0010 



.0118 



.656 



.96 



.3631 



.99 



.1944 



.4670 



1.280 



.0010 



.0116 



.509 



.74 



.2936 



.80 



.2061 



.3740 



1.274 



.0010 



.0121 



.348 



.51 



.1881 



.51 



.1730 



.2060 



1.095 



.0010 



.0122 



.271 



.40 



. 1357 



.37 



. 1456 



.1380 



1.017 



.0010 



.0118 



.192 



.28 



.0846 



.23 



.1106 



.0720 



.851 



.0010 



.0114 



i These tests used in deriving formulae 27 and 29. 



