58 



BULLETIN 852, U. S. DEPARTMENT OF AGRICULTURE. 



Table 8.— For Estimating the Capacity of Well-Made Concrete Pipe Lines or 

 Pressure Tunnels. 



Based on formula V=C s H ' 5 d -6 25 using 0.345 for the coefficient C„ 



For instance, 100 second-feet of water, the equivalent of 64.6 million United States gallons per day, will be 

 conveyed in a 48-inch pipe at a velocity of 7.96 feet per second with a loss of head (grade) of 4.22 feet per 

 thousand feet of pipe. 



s 



>> 

 c 



OS 



3 

 & 



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



Quan- 

 tity, 

 mil- 

 lions 

 per 

 day. 



38 



.4=7.876 



40 



4=8.727 



42 



4=9.621 



44 



.4=10.56 



46 



4 = 11.54 



48 

 4=12.57 



54 



4 = 15.90 



V 



H 



V 



H 



V 



H 



V 



H 



V 



H 



V 



H 



V 



H 



Sec- 



ft. 



20 

 25 

 30 

 35 

 40 



45 

 50 

 55 

 60 

 65 



70 

 75 

 80 

 85 

 90 



100 

 110 

 120 

 130 

 140 



150 

 160 

 170 

 180 

 190 



50 

 55 

 60 

 65 

 70 



75 

 80 

 85 

 90 

 95 



100 

 110 

 120 

 130 

 140 



150 

 160 

 170 

 180 

 190 



200 

 220 

 240 

 260 

 280 



300 

 320 

 340 

 360 

 380 



Feet. 

 2.54 

 3.17 

 3.81 

 4.44 

 5.08 



5.71 

 6.35 

 6.98 

 7.62 

 8.25 



8.89 

 9.52 

 10.20 

 10.80 

 11.40 



12.70 

 14.00 

 15.20 

 16.50 

 17.80 



19.00 

 20.30 

 21.60 

 22.80 

 24.10 



Feet. 

 0.57 

 .89 

 1.29 

 1.76 

 2.30 



2.90 

 3.59 

 4.34 

 5.17 

 6.06 



7.04 

 8.07 

 9.27 

 10.40 

 11.60 



14.40 

 17.40 

 20.60 

 24.20 

 28.20 



32.10 

 36.70 

 41.50 

 46.30 

 51.70 



Feet. 

 2.29 

 2.86 

 3.44 

 4.01 

 4.58 



5.16 

 5.57 

 6.30 

 6.88 

 7.45 



8.02 

 8.59 

 9.17 

 9.74 

 10.30 



11.50 

 12.60 

 13.80 

 14.90 

 16.00 



17.20 

 18.30 

 19.50 

 20.60 

 21.80 



Feet. 



0.44 

 .68 

 .99 



1.36 



1.75 



2.22 

 2.59 

 3.32 

 3.95 

 4.64 



5.37 

 6.16 

 7.02 

 7.92 

 8.86 



11.00 

 13.20 

 15.90 



18.50 

 21.40 



24.70 

 28.00 

 31.80 

 35.40 

 39.70 



Feet. 

 2.08 

 2.60 

 3.12 

 3.64 

 4.16 



4.68 

 5.20 

 5.72 

 6.24 

 6.76 



7.28 

 7.80 

 8.32 

 8.84 

 9.36 



10.40 

 11.40 

 12.50 

 13.50 

 14.60 



15.60 

 16.60 

 17.70 

 18.70 

 19.80 



Feet. 



0.34 

 .53 

 .76 



1.04 



1.36 



1.72 

 2.13 

 2.57 

 3.06 

 3.59 



4.17 

 4.78 

 5.44 

 6.14 

 6.88 



8.50 

 10.20 

 12.30 

 14.30 

 16.80 



19.10 

 21.60 

 24.60 

 27.50 

 30.80 



Feet. 

 1.89 

 2.37 

 2.85 

 3.31 

 3.79 



4.25 

 4.74 

 5.21 

 5.68 

 6.16 



6.63 

 7.10 



7.58 

 8.05 

 8.52 



9.47 

 10.40 

 11.40 

 12.30 

 13.30 



14.20 

 15.20 

 16.10 

 17.00 

 18.00 



Feet. 



0.26 

 .42 

 .60 

 .81 



1.06 



1.35 

 1.67 

 2.01 

 2.39 



2.82 



3:26 

 3.74 

 4.26 

 4.81 

 5.39 



6.66 



8.02 

 9.65 

 11.20 

 13.10 



15.00 

 17.10 

 19.20 

 21.40 

 24.00 



Feet. 

 1.73 

 2.17 

 2.60 

 3.03 

 3.47 



3.90 

 4.33 

 4.77 

 5.20 

 5.63 



6.07 

 6.50 

 6.93 

 7.37 

 7.80 



8.67 

 9.53 

 10.40 

 11.30 

 12.10 



13.00 

 13.90 

 14.70 

 15.60 

 16.50 



Feet. 



0.21 

 .33 

 .47 

 .64 

 .84 



1.07 

 1.32 

 1.60 

 1.90 

 2.23 



2.59 

 2.96 

 3.37 

 3.82 

 4.27 



5.32 

 6.38 

 7.59 

 8.96 

 10.30 



11.90 

 13.60 

 15.20 

 17.10 

 19.10 



Feet. 

 1.59 

 1.99 

 2.39 

 2.78 

 3.18 



3.58 

 3.98 

 4.38 

 4.77 

 5.17 



5.57 

 5.97 

 6.36 

 6.76 

 7.16 



7.96 

 8.75 

 9.55 

 10.30 

 11.10 



11.90 

 12.70 

 13.50 

 14.30 

 15.10 



Feet. 



0.17 



.26 



.38 



.52 



.67 



.85 



1.05 



1.28 



1.51 



1.78 



2.06 

 2.37 

 2.69 

 3.04 

 3.41 



4.22 

 5.09 

 6.07 

 7.12 

 8.19 



9.42 

 10.70 

 12.10 

 13.30 

 15.20 



Feet. 

 1.26 

 1.57 

 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 



6.29 

 6.92 

 7.55 

 8.18 

 8.80 



9.43 

 10.10 

 10.70 

 11.30 

 12.00 



Feet. 



0.09 

 .14 

 .21 

 .28 

 .35 



.46 

 .57 

 .59 

 .82 

 .95 



1.11 

 1.28 

 1.45 

 1.64 

 1.84 



2:27 

 2.75 

 3.27 

 3.84 

 4.44 



5.10 

 5.85 

 6.57 

 7.33 

 8.26 



Gallons. 

 12. 926 

 16. 157 

 19. 389 

 22. 621 

 25. 853 



29. 084 

 32.316 

 35. 547 

 38. 779 

 42. 010 



45. 242 

 48. 474 

 51. 705 

 54. 937 

 58. 168 



64. 631 

 71.096 

 77. 558 

 84.021 

 90.484 



96. 947 

 103. 410 

 109. 870 

 116. 340 

 122. 800 



32.316 

 35. 547 

 38. 779 

 42. 070 

 45.242 



48. 474 

 51.705 

 54. 937 

 58. 168 

 61.400 



64. 631 

 71.095 

 77. 558 

 84.021 

 90.484 



96. 947 

 103. 410 

 109. 870 

 116.340 

 122. 800 



129. 260 

 142. 190 

 155. 120 

 168. 040 

 180.970 



193. 890 

 206. 820 

 219. 750 

 232. 670 



245. 600 



60 



4 = 19.64 



66 



4 =23.76 



72 

 ,4=28.27 



78 

 .4=33.18 



84 



4=38.48 



90 



4=44.18 



96 



4=50.26 



V 



H 



V 



H 



V 



H 



V 



H 



V 



H 



V 



H 



V 



H 



2.55 

 2.80 

 3.06 

 3.31 

 3.56 



3.82 

 4.07 

 4.33 

 4.58 

 4.84 



5.09 

 5.60 

 6.11 

 6.62 

 7.13 



7.64 

 8.15 

 8.66 

 9.17 

 9.67 

 10.20 

 11.20 

 12.20 

 13.20 

 14.20 



15.30 

 16.30 

 17.30 

 18.30 



19.30 



0.33 

 .39 

 .47 

 .55 

 .64 



.73 

 .83 

 .94 

 1.06 

 1.19 



1.30 

 1.58 

 1.88 

 2.20 

 2.56 



2.94 

 3.34 

 3.78 

 4.23 

 4.71 



5.23 

 6.32 



7.49 

 8.77 

 10.20 



11.80 

 13.40 

 15.10 



16. '.10 

 18.80 



2.10 

 2.31 

 2.53 

 2.74 

 2.95 



3.16 

 3.37 

 3.58 

 3.79 

 4.00 



4.21 

 4.63 

 5.05 

 5.47 

 5.89 



6.31 

 6.73 

 7.16 

 7.58 

 8.00 



8.42 

 9. 26 



10. 10 

 10. 90 

 11.80 



12. 60 

 13. 50 

 14.30 



15. 20 



16. 00 



0.20 

 .24 

 .28 

 .33 

 .39 



.45 

 .51 

 .57 

 .64 

 .71 



.79 

 .96 

 1.14 

 1.34 

 1.55 

 1.78 

 2.02 

 2.29 

 2.56 

 2.86 



3.16 

 3.83 

 4.55 

 5.30 

 6.22 



7.09 

 8.13 

 9.13 

 10.30 

 11.40 



1.77 

 1.94 

 2.12 

 2.30 



2.48 



2.65 

 2.83 

 3.01 

 3.18 

 3.36 



3.54 

 3.89 

 4.25 

 4.00 

 4.95 



5.31 

 5.66 

 6.01 

 6.37 

 6.72 



7.08 

 7.78 

 8.49 

 9.20 

 9.90 



10. 60 

 11.30 

 12.00 

 12.70 

 13.40 



0.13 

 .15 

 .18 

 .21 

 .25 



.28 

 .32 

 .36 

 .40 

 .45 



.50 

 .61 

 .72 



.85 

 .98 



1.13 

 1.28 

 1.45 

 1.62 

 1.81 



2.01 

 2.42 

 2.89 

 3. 39 

 3.93 



4.50 

 5.12 

 5.77 

 6.46 

 7.19 



1.51 

 1.66 

 1.81 

 1.96 

 2.11 



2.26 

 2.41 

 2.56 

 2.71 



2.8'> 



3.01 

 3.32 

 3.62 

 3.92 

 4.22 



4.52 

 4.82 

 5.12 

 5.43 

 5.73 



6.03 

 6.63 

 7.23 

 7.84 

 8.44 



9.04 

 9.64 

 10. 30 

 10. 90 

 11.50 



0.08 

 .10 

 .12 

 .14 

 .16 



.18 

 .21 

 .24 

 .27 

 .30 



.33 



.40 

 .47 

 .56 

 .64 



.74 



.84 



.95 



1.07 



1.19 



1.32 

 1.59 

 1.89 

 2.23 

 2.58 



2.96 

 3.36 

 3.84 

 4.30 

 4.79 



1.30 

 1.43 

 1.56 

 1.69 

 1.82 



1.95 

 2.08 

 2.21 

 2.34 



2.47 



2.60 

 2.86 

 3.12 

 3.38 

 3.64 



3.90 

 4.16 

 4.42 

 4.68 

 4.94 



5.20 

 5.72 

 6.24 

 6.76 

 7.28 



7.80 

 8.32 

 8.84 

 9. 36 

 9.88 



0.06 

 .07 

 .08 

 .09 

 .10 



.12 

 .14 

 .16 



.18 

 .20 



.22 

 .27 

 .32 

 .38 

 .44 



.50 

 .57 

 .64 

 .72 

 .81 



.89 

 1.08 

 1.29 

 1.51 



1.75 



2.01 

 2.29 

 2.58 

 2.89 

 3.22 



1.13 

 1.24 

 1.36 

 1.47 

 1.58 



1.70 

 1.81 

 1.92 

 2.04 

 2.15 



2.26 

 2.49 

 2.72 

 2.94 

 3.17 



3.39 

 3.62 

 3.85 

 4.07 

 4.30 



'4.53 



4. 98 

 5.43 

 5.8S 

 6.34 



6.79 

 7.24 

 7.70 

 8.15 

 8.60 



0.04 

 .05 

 .06 

 .07 

 .08 



.09 

 .10 

 .11 

 .13 

 .14 



.15 

 .19 

 .22 

 .26 

 .30 



.35 

 .40 

 .45 

 .50 

 .56 



.62 

 .75 

 .89 

 1.05 

 1.22 



1.40 

 1.59 

 1.80 

 2.01 

 2.24 



0.99 

 1.09 

 1.19 

 1.29 

 1.39 



1.49 

 1.59 

 1.69 

 1.79 

 1.89 



1.99 

 2.19 

 2.39 

 2.59 

 2.79 



2.98 

 3.18 

 3.38 

 3.58 

 3.78 



3.98 

 4.38 

 4.78 

 5.17 

 5.57 



5.97 

 6.37 

 6.77 

 7.16 

 7.56 



0.03 

 .03 



.04 

 .05 

 .05 



.06 

 .07 

 .08 

 .09 

 .10 



.11 

 .13 

 .16 

 .19 

 .22 



.25 

 .28 

 .32 

 .36 

 .40 



.44 

 .54 

 .64 

 .75 



.84 



.95 

 1.13 

 1.28 

 1.43 

 1.60 



