THE FLOW OF WATER IN DRAIN TILE. 



33 



Table 5. — Elements of experiments for clay tile poorly laid. 



10-INCH TILE. 



Test No. 



2 



3 



4 



5 



6 



7 



8 



9 



10 



Depth 

 of flow. 



d 

 B 



Area 

 of flow. 



a 

 A 



Hy- 

 draulic 

 radius. 



Dis- 

 charge. 



Ve- 

 locity. 



Slope. 



Kutter 

 coeffi- 

 cient. 



GO 





(a) 





(R) 



(Q) 



(TO 



GO 



w 













Cu.ft. 



Feet 







Feet. 





Sq.ft. 





Feet. 



•per sec. 



•per sec. 







0. 805 



0.96 



0.5423 



0.99 



0. 2355 



0.5342 



0.985 



0.0005 



0. 0120 



.795 



.95 



.5389 



.98 



.2391 



.5679 



1. 054 



.0005 



.0116 



.708 



.85 



.4957 



.90 



.2537 



.5465 



1.103 



.0005 



.0116 



.625 



.75 



.4401 



.80 



. 2520 



.4934 



1.121 



. 0005 



.0114 



.524 



.63 



.3621 



.66 



.2368 



.3780 



1.044 



.0005 



.0116 



.429 



.51 



.2837 



.51 



.2124_ 



.2924 



1.031 



. 0005 



.0109 



.313 



.37 



.1876 



.34 



.1704 



.1602 



.854 



.0005 



.0111 



.214 



.25 



.1110 



.20 



.1251 



.0744 



.671 



.0005 



.0111 



.836 



1.00 



.5489 



1.00 



.2090 



.5102 



.929 



.0005 



.0117 



.791 



.95 



.5374 



.98 



.2405 



.5390 



1.003 



. 0005 



.0120 



.712 



.85 



.4981 



.91 



.2535 



.5222 



1.048 



.0005 



.0120 



.620 



.74 



.4365 



.80 



.2514 



.4772 



1.093 



.0005 



.0116 



.532 



.64 



. 3685 



.67 



.2385 



.4093 



1.111 



.0005 



.0111 



.417 



.50 



.2736 



.50 



.2087 



.2737 



1.000 



.0005 



.0111 



.311 



.37 



.1860 



.34 



.1696 



.1620 



.871 



.0005 



.0109 



.227 



.27 



.1206 



.22 



.1315 



.0780 



.647 



.0005 



.0117 



.831 



.99 



.5484 



.99 



.2173 



.7510 



1.370 



.0010 



.0118 



.799 



.96 



.5403 



.98 



.2378 



.7964 



1.474 



.0010 



.0118 



.697 



.83 



.4890 



.89 



.2541 



.7855 



1.607 



.0010 



.0115 



.628 



.75 



.4423 



.81 



.2523 



.7180 



1.624 



.0010 



.0113 



.547 



.65 



.3806 



.69 



.2415 



.6089 



1.600 



.0010 



.0111 



.422 



.51 



.2778 



.51 



.2103 



.4114 



1.481 



.0010 



.0109 



.324 



.39 



.1966 



.36 



.1749 



.2656 



1.351 



.0010 



. 0105 



.234 



.28 



.1257 



.23 



.1349 



.1393 



1.108 



.0010 



.0105 



.835 



1.00 



.5488 



1.00 



.2106 



.7570 



1.379 



.0010 



.0115 



.786 



.94 



. 5355 



.98 



.2421 



.7720 



1.442 



.0010 



.0121 



.697 



.83 



.4890 



.89 



.2541 



.7300 



1.493 



,.0010 



.0121 



.619 



.74 



.4357 



.79 



.2513 



.6720 



1.542 



.0010 



.0117 



.537 



.64 



.3726 



.68 



.2395 



.5465 



1.467 



.0010 



.0119 



.433 



.52 



.2870 



.52 



.2136 



.3720 



1.296 



.0010 



.0122 



.338 



.40 



.2080 



.38 



.1805 



.2222 



1.068 



.0010 



.0128 



.221 



.26 



.1161 



.21 



.1285 



.0768 



.662 



.0010 



.0149 



Chezy 

 coeffi- 

 cient. 



(CO 



90.8 

 96.4 

 97.9 

 99.9 

 96.0 

 100.0 

 92.5 

 84.8 



90.9 

 91.5 

 93.1 

 97.5 

 101.7 

 97.9 

 94.6 



92.9 

 95.6 

 100.8 

 102.2 

 103.0 

 102.1 

 102.2 

 95.4 



95.0 

 92.7 

 93.7 

 97.3 

 94.8 

 88.7 

 79.5 

 58.4 



12-INCH TILE. 



0.951 

 .877 

 .731 

 .643 

 .559 

 .463 

 .373 



.916 

 .789 

 .691 

 .594 

 .483 

 .386 



.972 

 .926 

 .799 

 .664 

 .573 

 .470 

 .368 



.782 

 .672 

 .557 

 .457 

 .360 



0.96 

 .89 

 .74 

 .65 

 .57 

 .47 

 .38 



.93 

 .80 

 .70 

 .60 

 .49 

 .39 



.94 

 .81 

 .67 

 .58 

 .48 

 .37 



.79 



.68 

 .57 

 .46 

 .37 



0. 7546 

 .7173 

 .6068 

 .5272 

 .4466 

 .3521 

 .2646 



. 7392 

 .6548 

 . 5714 

 .4806 

 .3719 

 .2771 



.7609 

 .7442 

 .6626 

 .5469 

 .4602 

 .3591 

 .2599 



.6493 

 .5542 

 .4447 

 .3462 

 .2522 



0.99 

 .94 



.59 

 .46 

 .35 



.97 



.86 

 .75 

 .63 

 .49 

 .36 



.87 

 .72 

 .60 

 .47 

 .34 



.85 

 .73 

 .58 

 .45 

 .33 



0. 2769 

 .2954 

 .2965 

 .2844 

 .2657 

 .2365 

 .2025 



.2882 

 .2999 

 .2921 

 .2742 

 .2432 

 .2078 



.2654 

 .2856 

 .3000 

 .2882 

 .2692 

 .2389 

 .2005 



.2997 

 .2896 

 .2651 

 .2344 

 .1973 



0. 9193 

 .8396 

 .6468 

 .5342 

 .4335 

 .2814 

 .1512 



1. 2640 

 1.0450 

 .8492 

 .6197 

 .3760 

 .2019 



1. 7125 

 1.6750 

 1. 3940 

 1. 0125 

 .7435 

 .4634 

 .2363 



1. 6475 



1.2700 



.8332 



.5174 



.2737 



1.218 



1.171 



1.066 



1.013 



.971 



.799 



.571 



1.710 



1. 596 

 1.486 

 1.289 

 1.011 

 .729 



2.251 

 2.251 

 2.104 

 1.851 

 1.616 

 1.291 

 .909 



2.538 

 2.293 

 1.874 

 1.495 

 1.085 



0.0005 

 . 0005 

 .0005 

 .0005 

 .0005 

 .0005 

 .0005 



.0010 

 .0010 

 .0010 

 .0010 

 .0010 

 .0010 



.0020 

 .0020 

 .0020 

 .0020 

 .0020 

 .0020 

 .0020 



.0030 

 .0030 

 .0030 

 .0030 

 .0030 



0. 0112 

 .0121 

 .0130 

 .0132 

 .0131 

 .0141 

 .0166 



.0117 

 .0126 

 .0132 

 .0142 

 . 0159 

 .0186 



.0119 



.0124 

 .0135 

 .0147 

 .0156 

 ..0171 

 .0200 



.0136 



.0145 

 .0161 

 .0177 

 .0202 



103.5 

 96.3 

 87.6 

 85.0 

 84.2 

 73.5 

 56.8 



100.7 

 92.2 

 87.0 

 77.9 

 64.8 

 50.6 



97.7 

 94.2 

 85.9 

 77.1 

 69.7 

 59.1 

 45.4 



84.6 



77.8 

 66.5- 

 56.4 

 44.6 



166597°— 20— Bull. 854- 



