22 



BULLETIN 854, U. S. DEPARTMENT OF AGRICULTURE. 



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

 8-INCH TILE— Continued. 



Test No. 



187 1. 

 1881. 

 189.. 

 190.. 

 191.. 

 192.. 



1931. 

 194.. 

 195.. 

 196.. 

 197.. 

 198.. 



1991. 

 200.. 

 201.. 

 202.. 

 203.. 

 204.. 



2051. 

 206'' 

 207.. 

 208.. 

 209.. 

 210.. 



2111. 

 212i. 

 213'. 

 214.. 

 215.. 

 216.. 

 217.. 



2181. 

 219'. 

 220.. 

 221.. 

 222.. 

 223.. 



224. 

 225. 

 226. 

 227. 

 228. 

 229. 



2 



3 



Depth 

 of 



d 



flow. 



D 



oo 





Feet. 





0.669 



0.98 



.661 



.96 



.509 



.74 



.358 



.52 



.267 



.39 



.165 



.24 



.670 



.98 



.663 



.97 



.510 



.74 



.364 



.53 



.280 



.41 



.196 



.29 



.676 



.99 



.558 



.82 



.427 



.62 



.358 



.52 



.272 



.40 



.177 



.26 



.662 



.97 



.642 



.94 



.503 



.73 



.356 



.52 



.270 



.39 



.180 



.26 



.667 



.97 



.661 



.96 



.657 



.96 



.473 



.69 



.325 



.47 



.250 



.37 



.173 



.25 



.673 



.98 



.669 



.98 



.490 



.72 



.346 



.51 



.260 



.38 



.173 



.25 



.553 



.81 



.540 



.79 



.501 



.73 



.338 



.49 



.256 



.37 



.166 



.24 



Area 



of 

 flow. 



(») 



Sq.ft. 



0.3663 

 .3644 

 .2936 

 .1949 

 .1329 

 .0684 



.3664 

 .3649 

 .2942 

 .1990 

 .1417 

 .0871 



.3675 

 .3215 

 .2415 

 .1949 

 .1363 

 .0755 



.3647 

 .3588 

 .2900 

 .1935 

 .1350 

 .0773 



.3658 

 .3644 

 .3635 

 .2714 

 . 1723 

 .1217 

 .0731 



.3670 

 .3663 

 .2821 

 .1867 

 .1283 

 .0731 



.3187 

 .311(1 

 .2888 

 .1812 

 .1257 

 .0689 



0.919 

 .99 

 .80 

 .53 

 .36 

 .19 



.99 

 .99 

 .80 

 .54 

 .39 

 .24 



.99 

 .87 

 .66 

 .53 

 .37 

 .21 



.99 

 .97 

 .79 

 .53 

 .37 

 .21 



.99 

 .99 

 .99 

 .74 

 .47 

 .33 

 .20 



.99 

 .99 

 .77 

 .51 

 .35 

 .20 



.87 

 .85 

 .78 

 .49 

 .34 

 .19 



Hy- 

 draulic 

 radius. 



Feet. 

 0.1885 

 .1924 

 .2061 

 .1760 

 .1439 

 .0973 



.1915 

 .2062 

 .1778 

 .1490 

 .1126 



.1840 

 .2085 

 .1935 

 .1760 

 . 1459 

 .1033 



.1919 

 .1989 

 . 20.55 

 .1754 

 .1451 

 .1048 



.1886 

 .1924 

 .1940 

 .2021 

 .1654 

 .1369 

 .1013 



.1861 

 .1885 

 .2040 

 .1723 

 .1410 

 .1013 



.2085 

 .2082 

 . 20.53 

 . 1698 

 .1394 

 .0978 



Dis- 

 charge. 



(Q) 



Cu.fi. 



per sec. 

 0.6750 

 .6720 

 .5220 

 .2805 

 .1540 

 .0540 



.7996 

 .7870 

 .6390 

 .3392 

 .2054 

 .0920 



1.0800 

 .9210 

 .5660 

 .3950 

 .2360 

 .0946 



1.2840 

 1.3000 

 .9480 

 .5590 

 .3392 

 .1481 



1.4920 



1.4650 



1.4475 



1.1580 



.5980 



.3760 



.1814 



1.6200 



1.6200 



1.3475 



.7525 



.4430 



.2096 



1.7675 



1.7375 



1.5350 



. 7932 



.4772 



.2138 



Ve- 

 locity. 



(TO 



Feet 

 per sec. 

 1.842 

 1.844 

 1.778 

 1.439 

 1.159 

 .790 



2.182 

 2. 157 

 2.172 

 1.705 

 1.449 

 1.057 



2.939 

 2.870 

 2.344 

 2.030 

 1.730 

 1.250 



3.522 

 3.623 

 3.270 

 2.889 

 2. 513 

 1.915 



4.079 

 4.021 

 3.982 

 4.267 

 3.471 

 3.089 

 2.483 



4.414 

 4.423 

 4.778 

 4.031 

 3.453 

 2.869 



5.546 

 5.576 

 5.316 

 4.378 

 3.798 

 3.102 



Slope. 



0. 0020 

 .0020 

 .0020 

 .0020 

 .0020 

 .0020 



.0030 

 .0030 

 .0030 

 .0030 

 .0030 

 .0030 



. 0050 

 .0050 

 .0050 

 .0050 

 .0050 

 .0050 



.0075 

 .0075 

 .0075 

 .0075 

 .0075 

 .0075 



.010 

 .010 

 .010 

 .010 

 .010 

 .010 

 .010 



.0125 

 .0125 

 .0125 

 .0125 

 .0125 

 .0125 



.01.50 

 .0150 

 .0150 

 . 01.50 

 .0150 

 .0150 



Kutter 

 coeffi- 

 cient. 



(«) 



0.0113 

 .0115 

 .0123 

 .0130 

 .0138 

 .0144 



.0117 

 .0119 

 .0122 

 .0136 

 .0139 

 .0149 



.0112 

 .0121 

 .0137 

 .0143 

 . 0145 

 .0149 



.0117 

 .0117 

 .0129 

 .0128 

 .0127 

 .0129 



.0116 

 .0118 

 .0120 

 .0116 

 .0120 

 .0118 

 .0116 



.0118 

 .0118 

 .0117 

 .0120 

 .0120 

 .0113 



.0112 

 .0111 

 .0114 

 .0119 

 .0119 

 .0112 



10-INCH TILE. 



2301 

 231' 

 232i 

 233. 

 234. 

 235. 

 286. 

 237. 



238. 



£','.». 

 240. 

 241. 

 242. 



0.821 



0.98 



0. 5467 



0.99 



0.2275 



0. 6386 



1.168 



0.0005 



0. 0104 



.812 



.97 



.5444 



.99 



.2324 



.5874 



L079 



.0005 



.0112 



.783 



.94 



.5343 



.97 



.2429 



.5770 



l.'08O 



.0005 



.0114 



.749 



.90 



.5186 



.95 



. 2497 



. 5640 



1.088 



.0005 



.0116 



. 697 



.83 



.4890 



.89 



. 2541 



.5578 



1.141 



.0005 



.0112 



.666 



.80 



.4689 



.85 



. 2542 



.5503 



1.174 



.0005 



.0110 



.626 



.75 



. 4408 



.80 



. 2521 



. 5366 



1.217 



.0005 



.0107 



.567 



.68 



. 3963 



.72 



.2451 



.4982 



1.257 



.0005 



.0102 



.546 



.65 



.3798 



. 69 



.2413 



.4611 



1.214 



.0005 



.0104 



.473 



.57 



.3203 



.58 



. 22.50 



.3967 



1.239 



.0005 



.0098 



.421 



.50 



.2770 



.50 



. 2009 



.3078 



1.111 



.0005 



. 0103 



.310 



.37 



. 1852 



.34 



.1692 



. 1998 



1.079 



.0005 



.0093 



.214 



.26 



.1110 



.20 



. 1251 



.1005 



.900 



.0005 



.0089 



' These, tests used in deriving formulae 27 and 29. 



