
















SPRAY IRRIGATION. ao 
(nearest railroad station), accompanied by full descriptions of items it is 
proposed to furnish, stating guaranties, efficiencies, and making recommenda- 
tiens on the size and items of censtruction. for Suction and discharge pipes to 
be used. 
The source of water supply is —--~.---- (well, creek, ete.). 
The capacity of the water supply is ~--_-_~- gallons per minute. 
The foundations for pump and engine are to be of —-_-_-_-__- (concrete, 
bricks wood) set, in 2222-2 -._ (clay, loam, sand, rock) type of soil. 
The vertical distance of water below proposed pump foundation is ______ feet. 
The vertical distance water will draw down when pump is running is ______ 
feet. 
The horizontal distance of water from proposed pump is _-________. 
The vertical distance of proposed pump foundation from highest land to ne 
eT ALEC! Gye ees ee re EE 
The horizontal distance of proposed pump from the most distant irrigation 
COGN Ca SIs aha aR ate aii  eahere 
The suction of pump must be —---______ (vertical or horizontal). 
The discharge of pump must be —~-_---_--_- (vertical or horizontal). 
The number of bends in suction pipe must be ~-_-___-_-_ ORV. Sate 
(90 or 45) degrees angle. 
The number of bends in discharge pipe must be __________ Of 22s ee 
(90 or 45) degrees. 
The amount of water desired per minute is -________-_. 
The desired pressure on nozzles for the highest ground is _____-_____. 
The height of nozzles above highest ground will be ~-----_-__. 
The type of pump preferred is ~-------_- (displacement, centrifugal), to be 
connected to power by —--------- (belt, gear, direct). 
The power desired for operating the pump is ~-------_-. 
I now have a —----- horsepower —--------- engine. 
The speed of my engine is _____~ revolutions per minute. 
The size of engine belt pulley is ~--------_~- GlAMeTer 2 2a width. 
I ean obtain alternating electric current of ~----_--_~- phases. 225s 
CHELOS a a ee ak voltage. 
I can obtain direct electric current of ~--------_ voltage. 
The following is a sketch of my water supply, showing the desired location 
of pumping plant and field to be irrigated. 
SUCTION LIFT. 
Tt is advisable to set all pumps as close to the water as possible and 
under ordinary conditions the suction hft should not exceed that 
given in Table 5. Suction depends upon the atmospheric pressure, 
which decreases as altitude increases. 
TABLE 5.—Practical suction lift of pumps at different altitudes. 



Practi- Practi- 
eal suc- cal suc- 
Altitude above sea level. Hon Ti Altitude above sea level. tion lift 
(a) 0) 
pumps. pumps.! 
Feet. 3 Dect 
Seaplevelewmas tam mere Masai Mtr sila GN Dr allelumaley(G-280 feet) ej 4ase see sea oye 29 
Burley des 20 Meet) we done ea eee 24a mantles: (G:G00ifeet) hassel ene 19 
i TOMS QO A goes wb cneees oe ere) 23y lle mailess (7 920iteet) see sa ee eee eee 18 
epellen(Sp9G0 feet) as eels eee. yee al eS Zia 2rriles (0 S60 feeb) senso ce Cease se ae 17 


a 1 al suction lift of pumps is equal to the vertical distance water is lifted, plus the head due to 
riction 


