70 



BULLETIN 376, U. S. DEPARTMENT OP AGEICULTUEP. 



Table 7 (Continued). — Velocity V in feet per second and loss of head H in feet per thou- 

 sand feet of pipe, necessary to the conveyance of a given quantity of water, Q, in second- 

 feet and in millions of U. 8. gallons per day through wood-stave pipe. For instance, 

 160 second-feet will be carried by a 42-inch pipe at a velocity of 16.6 feet per second with 

 a loss of head of 15. S feet per thousand feet of pipe. 



Quan- 

 tity. 



Inside diameter, in inches and corresponding area, A, in square feet. 



Quan- 

 tity, 

 Tnfl- 

 lions 

 per 

 day. 



36 



A=3.687. 



38 

 A= 4.276. 



30 



A= 4.909. 



33 



A= 5.585. 



34 



A= 6.305. 



36 



A= 7.069. 



38 



A= 7.876. 



Q 



V 



H 



V 



H 



V 



H 



V 



H 



V 



H 



V 



H 



V 



H 



Sec.-ft. 



8 



9 



10 



11 



12 



13 

 14 

 16 



18 

 20 



22 

 24 

 26 

 28 

 30 



32 

 36 



40 

 45 

 50 



55 

 60 

 65 

 70 

 75 



80 



Feet. 

 2.17 

 2.44 

 2.71 

 2.98 

 3.25 



3.53 

 3.80 

 4.34 

 4.88 

 5.42 



5.97 

 6.51 

 7.05 

 7.59 

 8.14 



8.68 

 9.76 

 10.8 

 12.2 

 13.6 



14. C' 

 16.3 

 17.6 

 19.0 

 20.3 



Feet. 

 0.68 

 .85 

 1.02 

 1.21 

 1.42 



1.64 

 1.87 

 2.38 

 2.94 

 3.56 



4.23 

 4.94 

 5.70 

 6.55 

 7.40 



8.30 

 10.25 

 12.4 

 15.3 

 18.5 



22.0 

 25.6 

 29.6 

 33.9 

 38.2 



Feet. 

 1.87 

 2.10 

 2.34 

 2.57 

 2.81 



3.04 



3.27 

 3.74 

 4.21 

 4.68 



5.15 

 5.61 

 6.08 

 6.55 

 7.02 



7.48 

 8.42 

 9.35 

 10.5 

 11.7 



12.9 

 14.0 

 15.2 

 16.4 

 17.5 



18.7 

 19.9 

 21.0 



Feet. 



0.48 

 .59 

 .72 

 .85 



1.00 



1.15 

 1.32 

 1.67 

 2.07 

 2.50 



2.96 

 3.47 

 4.02 

 4.58 

 5.18 



5.82 



7.19 



8.72 



10.8 



13.0 



15.5 

 18.1 

 20.9 

 23.8 

 26.9 



30.2 

 33.9 

 37.4 



Feet. 

 1.63 

 1.83 

 2.04 

 2.24 

 2.45 



2.65 

 2.85 

 3.26 

 3.67 

 4.07 



4.48 

 4.89 

 5.30 

 5.70 

 .6.11 



6.52 

 7.33 

 8.15 

 9.17 

 10.2 



11.2 



12.2 

 13.2 

 14.3 

 15.3 



16.3 

 17.3 

 18.3 

 19.4 

 20.4 



Feet. 

 0.34 

 .43 

 .52 

 .62 

 .72 



.82 



.95 



1.20 



1.49 



1.80 



2.14 

 2.50 

 2.89 

 3.30 

 3.73 



4.19 

 5.18 

 6.26 



7.74 

 9.36 



11.1 

 13.0 

 15.0 

 17.1 

 19.4 



21.8 

 24.3 

 28.4 

 29.7 

 32.6 



Feet. 

 1.43 

 1.61 

 1.79 

 1.97 

 2.15 



2.33 

 2.51 

 2.87 

 3.22 

 3.68 



3.94 

 4.30 

 4.66 

 5.01 

 5.37 



6.73 

 6.46 

 7.16 

 8.06 

 8.95 



9.85 

 10.7 

 11.6 

 12.5 

 13.4 



14.3 

 15.2 

 16.1 

 17.0 

 17.9 



Feet. 

 0.25 

 .31 

 .38 

 .45 

 .53 



.61 



.70 



.89 



1.09 



1.32 



1.57 

 1.84 

 2.12 

 2.42 

 2.74 



3.08 

 3.81 

 4.61 

 6.70 

 6.90 



8.15 

 9.56 

 11.0 

 12.6 

 14.3 



16.0 

 17.9 

 19.8 

 21.8 

 24.0 



Feet. 

 1.27 

 1.43 

 1.59 

 1.75 

 1.90 



2.06 

 2.22 

 2.54 

 2.86 

 3.17 



3.49 

 3.81 

 4.12 



4.44 

 4.76 



5.08 

 6.71 

 6.34 

 7.14 

 7.93 



8.72 

 9.52 

 10.3 

 11.1 

 11.9 



12.7 

 13.5 

 14.3 

 15.1 

 15.9 



Feet. 

 0.19 

 .23 

 .28 

 .34 

 .39 



.46 

 .52 

 .67 

 .82 

 .99 



1.18 

 1.38 

 1.59 

 1.82 

 2.05 



2.29 

 2.85 

 3.45 

 4.27 

 6.16 



6.11 



7.16 

 8.27 

 9.44 

 10.7 



12.0 

 13.4 

 14.8 

 16.4 

 17.9 



Feet. 

 1.13 

 1.27 

 1.41 

 1.56 

 1.70 



1.84 

 1.98 

 2.26 

 2.55 

 2.83 



3.11 

 3.40 

 3.68 

 3.96 

 4.24 



4.53 

 6.09 

 6.66 

 6.37 

 7.07 



7.78 

 8.49 

 9.20 

 9.90 

 10.6 



11.4 

 12.0 

 12.7 

 13.4 

 14.2 



Feet. 

 0.14 

 .18 

 .22 

 .26 

 .30 



.35 

 .40 

 .50 

 .62 

 .75 



.90 

 1.05 

 1.21 

 1.38 

 1.56 



1.76 

 2.17 

 2.62 

 3.25 

 3.92 



4.66 

 6.44 

 6.29 

 7.19 

 8.13 



9.13 

 10.2 

 11.3 

 12.5 

 13.7 



Feet. 

 1.02 

 1.14 

 1.27 

 1.40 

 1.62 



1.65 

 1.78 

 2.03 

 2.29 

 2.64 



2.79 

 3.05 

 3.30 

 3.56 

 3.81 



4.06 

 4.57 

 6.08 

 5.71 

 6.35 



6.98 

 7.62 

 8.25 

 8.89 

 9.52 



10.2 

 10.8 

 11.4 

 12.1 

 12.7 



Feet 

 0.11 

 .14 

 .17 

 .20 

 .23 



.27 

 .31 

 .39 



.48 



.58 



.69 

 .81 

 .93 

 1.07 

 1.21 



1.36 

 1.67 

 2.04 

 2.51 

 3.04 



3.59 

 4.21 

 4.87 

 5.55 

 6.29 



7.07 

 7.87 

 8.73 

 9.61 

 10.6 



Gals. 

 5.171 

 5.817 

 6.463 

 7.109 

 7.756 



8.402 



9.048 



10.341 



11.034 



12.926 



14.219 

 15.512 

 16. 804 

 18. 097 

 19.389 



20. 682 

 23. 267 

 25. 853 

 29.084 

 32.316 



35.647 



38.779 

 42'. 010 

 45. 242 

 48.474 



51.709 



85 







64. 937 



90 







68. 168 



95 







61.400 



100 











64.632 

















40 



A=8.727 



43 



A= 9.621. 



44 



A= 10.56. 



46 



A=11.54. 



48 

 A= 12.67. 



54 



A= 16.90. 



60 



A=19.64. 







V 



H 



V 



H 



V 



H 



V 



H 



V 



H 



V 



H 



V 



H 





30 

 35 

 40 

 45 

 50 



65 

 60 

 65 

 70 

 75 



80 



85 

 90 

 95 

 100 



110 

 120 

 130 

 140 

 150 



160 

 170 

 180 

 190 



3.44 

 4.01 

 4.58 

 5.16 

 5.57 



6.30 



6.88 

 7.45 

 8.02 

 8.59 



9.17 

 9.74 

 10.3 

 10.9 

 11.5 



12.6 

 13.8 

 14.9 

 16.0 

 17.2 



18.3 

 19.5 

 20.6 



0.95 

 1.26 

 1.59 

 1.97 

 2.26 



2.82 



3.29 



3.8 



4.36 



4.92 



5.53 

 6.16 

 6.84 

 7.55 

 8.30 



9.79 

 11.5 

 13.3 

 15.1 

 17.1 



19.3 

 21.4 

 23.8 



3.12 



3.64 

 4.16 

 4.68 

 5.20 



5.72 

 6.24 

 6.76 



7.28 

 7.8 



8.32 

 8.84 

 9.36 

 9.87 

 10.4 



11.4 

 12.5 

 13.5 

 14.6 

 15.6 



16.6 

 17.7 

 18.7 

 19.8 

 20.8 



0.75 

 .99 

 1.26 

 1.56 

 1.88 



2.24 

 2.62 

 3.01 

 3.44 

 3.89 



4.37 

 4.88 

 5.41 

 5.96 

 6.55 



7.77 

 9.09 

 10.5 

 12.0 

 13.6 



15.3 

 17.0 

 18.9 

 20.8 

 22.8 



2.85 

 3.31 



3.79 

 4.26 

 4.74 



5.21 

 5.68 

 6.16 

 6.63 

 7.10 



7.58 

 8.05 

 8.52 

 9.00 

 9.47 



10.4 

 11.4 

 12.3 

 13.3 



14.2 



15.2 

 16.1 

 17.0 

 18.0 

 18.9 



19.8 

 20.8 



0.60 

 .79 

 1.00 

 1.25 

 1.50 



1.79 

 2.09 

 2.42 

 2.76 

 3.12 



3.51 

 3.92 



4.34 

 4.78 

 5.24 



6.24 

 7.23 

 8.41 

 9.60 

 10.9 



12.2 

 13.6 

 15.1 

 16.7 

 18.3 



20.0 

 21.7 



2.60 

 3.03 

 3.47 

 3.90 

 4.33 



4.77 

 5.20 

 5.63 

 6.07 

 6.50 



6.93 

 7.37 



7.8 

 8.23 

 8.67 



9.53 

 10.4 

 11.3 

 12.1 

 13.0 



13.9 

 14.7 

 15.6 

 16.5 

 17.3 



18.2 

 19.1 

 19.9 

 20.8 



0.49 



.64 



.82 



1.01 



1.22 



1.46 

 1.69 

 1.95 

 2.23 

 2.53 



2.84 

 3.17 

 3.53 

 3.87 

 4.25 



5.04 

 5.89 

 6.81 

 8.64 

 8.81 



9.89 

 11.0 

 12.2 

 13.5 



14.8 



16.1 

 17.5 

 19.0 

 20.5 



2.39 

 2.78 

 3.18 

 3.68 

 3.98 



4.38 

 4.77 

 5.17 

 5.57 

 6.97 



6.36 

 6.76 

 7.16 

 7.56 

 7.96 



8.75 

 9.55 

 10.34 

 11.1 

 11.9 



12.7 

 13.6 

 14.3 

 15.1 

 15.9 



16.7 

 17.5 

 18.3 

 19.1 

 19.9 



0.40 

 .52 

 .67 

 .82 

 .99 



1.18 

 1.38 

 1.59 

 1.82 

 2.06 



2.31 



2.58 

 2.87 

 3.16 

 3.46 



4.11 



4.81 

 5.55 

 6.35 



7.18 



8.07 

 8.98 

 9.96 

 11.0 

 12.1 



13.2 

 14.3 

 15.5 

 16.8 

 18.0 



1.89 

 2.20 

 2.52 

 2.83 

 3.14 



3.46 

 3.77 

 4.09 

 4.40 

 4.72 



5.03 

 5.35 

 5.66 

 5.98 

 6.29 



6.92 



7.55 

 8.18 

 8.81 

 9.43 



10.1 

 10.7 

 11.3 

 12.0 

 12.6 



13.2 

 13.8 

 14.5 

 15.1 

 15.7 



0.23 

 .30 



.38 

 .47 

 .57 



.67 

 .79 

 .91 

 1.04 

 1.18 



1.32 

 1.47 

 1.63 

 1.80 

 1.97 



2.35 

 2.74 

 3.17 

 3.62 

 4.10 



4.60 

 5.13 

 5.70 

 6.28 

 6.89 



7.61 

 8.17 

 8.86 

 9.64 

 10.3 



1.63 

 1.78 

 2.04 

 2.29 

 2.65 



2.80 

 3.06 

 3.31 

 3.56 

 3.82 



4.07 

 4.33 



4.68 

 4.84 

 5.09 



5.6 

 6.11 

 6.62 

 7.13 



7.64 



8.15 

 8.66 

 9.17 

 9.67 

 10.2 



10.7 

 11.2 

 11.7 

 12.2 

 12.7 



0.14 

 .18 

 .23 

 .28 

 .34 



.41 

 .48 

 .55 

 .63 

 .73 



.80 

 .89 

 .99 

 1.09 

 1.19 



1.42 

 1.66 

 1.91 

 2.19 



2.48 



2.78 

 3.12 

 3.43 



3.79 

 4.16 



4.64 

 4.94 

 6.34 

 6.78 



19.389 



22. 621 

 25.853 

 29.084 

 32.316 



35.547 

 38.779 

 42. 010 

 45. 242 

 48.474 



61.705 

 54. 937 

 58. 168 

 61.400 

 64.631 



71.095 

 77. 558 

 84. 021 

 90. 484 

 96.947 

 103.41 

 109.87 

 116.34 

 122. 80 



200 







129. 26 



210 







135 73 



220 











142. 19 



230 













148.65 



240 











1 



15.^. 12 



250 













6. 22 161.. 5S 













1 











