48 BULLETIN 854, U. S. DEPARTMENT OF AGRICULTURE. 



Table 8. — Comparison of velocities for clay tile flowing full. 



1 



2 



3 

 Velocity 



4 



5 

 Difference 



1 



2 



3 

 Velocity 



4 



5 

 Difference 



Size 





from 



Velocity 



between 



Size 





from 



Velocity 



between 



of 



Grade. 



curves m 



by for- 



column 3 



of 



Grade. 



curves in 



by for- 



column 3 



tile. 





Plate 

 IX. 



mula 34. 



and 

 column 4. 



tile. 





Plato 

 IX. 



mula 34. 



and 

 column 4. 



Inches. 



Per cent. 



Ft. per sec. 



Ft- per sec. 



Ft. per sec. 



Inches. 



Per cent. 



Ft. per sec. 



Ft. per sec. 



Ft. per sec. 



4 



0.05 



0.00 



0.59 



-0.01 



6 



0.75 



3.33 



3.04 



-0.29 





.10 



.77 



.84 



+ .07 





1.00 



3.78 



3.51 



- .27 





.20 



1.08 



1.18 



+ .10 















.30 



1.36 



1.45 



+ .09 



S 



.05 



.87 



.95 



+ .08 





.50 



1.76 



1.87 



+ .11 





.10 



1.23 



1.34 



+ .11 





.75 



2.12 



2.29 



4- .17 





.20 



1.82 



1.89 



+ .07 





1.00 



2.44 



2.64 



+ .20 





.30 



2.13 



2.32 



+ .19 





1.25 



2.93 



2.96 



+ .03 





.50 



2.92 



2.99 



+ .07 





1.50 



3.27 



3.24 



- .03 





.75 



3.53 



3.66 



+ .13 



5 



.05 



.60 



.68 



+ .08 



10 



.05 



1.06 



1.08 



+ .02 





.10 



1.02 



.96 



- .06 





.10 



1.57 



1.52 



- .05 





.20 



1.35 



1.36 



+ .01 





.20 



2.27 



2.16 



- .11 





.30 



1.70 



1.67 



- .03 





.30 



2.74 



2.65 



- .09 





.50 



2.11 



2.15 



+ .04 





.50 



3.50 



3.42 



- .08 





.75 



2.52 



2.64 



+ .12 





.75 



4.23 



4.19 



- .04 





1.00 



2.83 



3.04 



+ .21 





1.00 



4.98 



4.84 



- .14 





1.25 



3.39 



3.40 



+ .01 





1.25 



5.63 



5.40 



- .23 





1.50 



3.90 



3.73 



- .17 























12 



.05 



1.17 



1.21 



+ .04 



G 



.05 



.77 



.79 



+ .02 





.10 



1.86 



1.71 



- .15 





.10 



1.04 



1.11 



+ .07 





.20 



2.35 



2.41 



+ .06 





.20 



1.63 



1.56 



- .07 





.30 



2.95 



2.96 



+ .01 





.30 



2.03 



1.92 



- .11 





.50 



3.94 



3.82 



- .12 





.50 



2.59 



2.48 



- .11 













Totalplus difference +2. 11 



Total minus difference —2. 16 



Number of items 44 



Average difference foot per second. . . 097 



Table 9. — Comparison of velocities for concrete tile flowing full. 



1 



2 



3 

 Velocity 



4 



5 

 Difference 



1 



2 



3 

 Velocity 



4 



5 

 Difference 



Size 





from 



Velocity 



between 



Size 





from 



Velocity 



between 



of 



Grade. 



curves in 



by for- 



column 3 



of 



Grade. 



curves in 



by for- 



column 3 



tile. 





Plate 

 IX. 



mula 34. 



and 

 column 4. 



tile. 





Plate 

 IX. 



mula 34. 



and 

 column 4. 



Inches. 



Per cent. 



Ft. per sec. 



Ft. per sec. 



Ft. per sec. 



Inches. 



Per cent. 



Ft. per sec. 



Ft. per sec. 



Ft. per sec. 



4 



0.05 



0.52 



0.58 



+0.06 



8 



0.05 



0.92 



0.90 



-0.02 





.10 



.78 



.82 



+ .04 





.10 



1.31 



1.30 



- .01 





.20 



.99 



1.16 



+ .17 





.20 



1.89 



1.84 



- .05 





.30 



1.18 



1.41 



+ .23 





.30 



2.30 



2.26 



- .04 





.50 



1.69 



1.83 



+ .14 





.50 



2.99 



2.91 



- .08 





.75 



2.15 



2.24 



+ .09 





.75 



3.53 



3.57 



+ .04 





1.00 



2.39 



2.58 



+ .19 





1.00 



3.98 



4.11 



+ .13 





1.25 



2.82 



2.89 



+ .07 





1.25 



4.42 



4.61 



+ .19 





■1.50 



3.06 



3.16 



+ .10 





1.50 



4.83 



5.04 



+ .21 



5 



.05 



.01 



.67 



+ .06 



10 



.05 



.90 



1.07 



+ .17 





.10 



.97 



.95 



- .02 





.10 



1.38 



1.52 



+ .14 





.20 



1.36 



1.32 



- .04 





.20 



2.06 



2.15 



+ .09 





.30 



1.71 



1.65 



- .06 





.30 



2.47 



2.63 



+ .16 





.50 



2.30 



2.13 



- .17 





.50 



3.23 



3.39 



+ .16 





.75 



2.69 



2.61 



- .08 





.75 



3.87 



4.16 



+ .29 





1.00 



3.19 



3.01 



- .18 





1.00 



4.49 



4.80 



-t- .31 





1.25 



3.53 



3.37 



- .16 





1.25 

 1.50 



4.99 

 5.37 



5.37 

 5.88 



+ .38 

 + .51 



6 



.05 



.67 



.76 



+ .09 















.10 



1.13 



1.08 



- .05 



12 



.05 



1.20 



1.21 



+ .01 





.20 



1.58 



1.53 



- .05 





.10 



1.72 



1.71 



- .01 





.30 



1.97 



1.87 



- .10 





.20 



2.37 



2.42 



+ .05 





.50 



2.30 



2.41 



+ .11 





.30 



2.93 



2.97 



+ .04 





.75 



2.95 



2.95 



+ .00 















1.00 



3.20 



3.41 



+ .15 















1.25 



3.77 



3.81 



+ .04 















1.50 



4.28 



4.18 



- .10 













Total plus difference +4.42 



Total minus difference —1. 22 



Number of items 48 



Average difference foot per second. . . 117 



