48 
BULLETII^ 854, U. S. DEPARTMENT OF AGRICULTURE. 
Table 8 — 
Comparison of velocities for day 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 m 
by for- 
column 3 
tile. 
Plate 
IX. 
mula 34. 
and 
column 4. 
tile. 
• 
Plate 
IX. 
mula 34. 
and 
column 4. 
IncTies. 
Percent. 
Ft. per sec. 
Ft. per sec. 
Ft. per sec. 
Inches. 
Per cent. 
Ft. per sec. 
Ft. per sec. 
Ft. per sec. 
4 
0.05 
0.60 
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 
8 
.05 
.87 
.95 
+ .08 
.50 
1.76 
1.87 
+ .11 
.10 
1.23 
1.34 
+ .11 
.75 
2.12 
2.29 
+ .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 
+ A)7 
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 
2.8.3 
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 
6 
.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 m 
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 
-f0.06 
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 
1.83 
+ .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 
4.8-3 
5.04 
+ .21 
5 
.05 
.61 
.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 
2.61 
- .08 
.75 
3.87 
4.16 
+ .29 
1.00 
3.19 
3.01 
- .18 
1.00 
4.49 
4.80 
+ .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 
3.26 
3.41 
+ .15 
1.25 
3.77 
3.81 
+ .04 
1.50 
4.28 
4.18 
- .10 
Total plus difference 4-4. 42 
Total minus difference —1. 22 
Number of items 48 
Average difference foot per second . , .117 
