32 BULLETIN 1067, U. S. DEPARTMENT OF AGRICULTURE. 



Table 23. — Test of pumping plant, Dalcour drainage district, Dalcour, La., May 26, 1914. 



Time. 



Speed. 



Actual 

 lift. 



Discharge. 



Remarks. 



11.10 



R. p. m. 

 209 

 210 

 209 

 209 

 212 

 211 

 211 

 212 



Feet. 

 4.22 

 4.36 

 4.57 

 4.53 

 4.62 

 4.64 

 4.75 

 4.81 



Sec.-ft. 

 240.0 

 233.8 

 230.9 

 218.5 

 225.0 

 224.5 

 223.5 

 218.9 



G. p. m. 



107, 810 

 105, 000 

 103, 700 



98, 2C0 

 101, 000 

 100, 8f 

 100, 400 



qs snn 



-- targe rigurae stttuM 



11.30 



be divided by ten. 



11.55 



12.20 



Fuel, distillate, 42° Baume; total oil used from 

 , 11.10 a. m. to 2.07 p. m., 78 pounds=3.98 

 gallons per hour. 



12.40 



1.10 



1.40 



2.15 



.. 









Mean 



210.4 



4.56 



226.9 101, 9C0 





2.50 



211 

 210 

 210 

 210 



4.90 

 5.00 

 5.04 



5.07 



215.4 ! 96,800 

 213.4 1 95,900 



211.0 I 94,8<X) 



215. 1 96, 600 j 





3.25 



3.45 



Adjusted carbureter; total oil used from 2.07 



4.40 



p. m. to 4.26 p. m., 45J pounds=2.99 gallons 







per hour. 



Mean 



210. 2 5. 00 



213.7 



98,020 j 





TEST OF PUMPING PLANT IN SUBDISTRICT NO. 1, LAFOURCHE DRAINAGE DISTRICT 



NO. 20, CUTOFF, LA. 



DESCRIPTION OF PLANT. 



This plant is made up of two pumping units, each consisting of a 

 36-inch centrifugal drainage pump driven by a 2-cylinder 4-cycle 

 engine of 120 horsepower at 190 revolutions per minute. The pumps 

 have overhead discharge and are really larger than 36 inches, as they 

 have an oval discharge flange. A flexible coupling is used between 

 engine and pump, but there is no friction clutch. The pumps are 

 primed by means of vacuum pumps run by friction drive from the 

 flywheels of the main engines. The circulating pumps are of the 

 chamber-wheel type. Air tanks and a small compressor driven by 

 a gasoline engine furnish an easy and effective method of starting. 



METHOD OF MAKING TEST. 



The quantity of water was measured by means of Pitot tubes and 

 the lift was determined by means of gages set in the suction and dis- 

 charge canals. The fuel used, a distillate of 43.25° Baume, was 

 weighed by means of a spring balance. The engines were started 

 by gasoline. The results of the test are shown in table 24. 



Table 24. — Tests of pumping plant in subdistrict No. 1, 



No. 20, June 18-22, 1917. 



TEST NO. 1, UNIT NO. 1. 



Lafourche drainage district 



Time. 



Speed. A 1 C ^ al : Discharge. 



Remarks. 



3.50 



R.p.m. 

 190 

 184 

 188 

 187 



Feet. 

 4.3 



Sec.-ft. 

 102.8 

 100.0 

 99.8 

 98.2 



G. p. m. 

 46, 200 

 44,860 

 44, 700 

 44,100 



1 



4.05 



1 Fuel, distillate of 43.25° Baume; from 3:49 p. m. 



4.20 



4.4 



[ to 4:49 p. m., 95.25 pounds of fuel used. 



4.35 









Mean 



187.2 



4.35 



100.1 



44,965 





