, 
382 BULLETIN 495, U. S. DEPARTMENT OF AGRICULTURE. 
certain amount of pipe which will give a desired length when screwed 
together. Pipe less than 2 inches in diameter can be cut in the field, 
hence the actual number of feet required is stated for such pipe. 
“Location” refers to the location in the field. Nozzle lines are as- 
sumed to be 630 feet long on each side of the farm road. Pipe posts 
are assumed to be set 18 feet apart, and 9 feet long, to support nozzle 
lines 64 feet above the surface. 
TABLE 4.—Bill of materials. 

Amount. Size. Item. Location. 
a 
iran; 410 ieet.-- 5. .=-.: 6 | Black guaranteed wrought-iron | Main feed pipe. 
pipe, cut to exact dength, with 
allowance for 1 tee in each run. 

12runs, 50 feet each... -- Oa eee dOe sakes 2 Ges ee Do. 
lrun, it to) Be ie [eae C6 Ct legen Sites Armes ete vag tid oie oP Do. 
20 runs, 30 feet each... -- 2 | Galvanized wrought-steel pipe. - ass end east-and-west nozzle 
es. 
20 pieces, 7 feet each-..- ie) ae 6 Ce ie eis pny ee gle rare es Nozzle-line risers. 
7 pieces, 15 feet each. ..- Pe Pee dO SS ee eee Hee under road, east-and-west 
ines. 
SA Ds (51 PS ane ek eee 1 Bo ee OO Ree aS So See Eee eee meee Do. 
eU0deeL. ete 1 al fee GO8 2 hn as eee eee eee Do. 
DOU NCCU a oN ae eae See eee 1 Wiel lasege GOP Se Se a ae a oe aetna Do. 
HEROD MCOtSe es ee eee 2 3) eee ee GOs. Sakae ee ean See eee | Far end all nozzle lines. 
700 pieces, 9 feet each...) 14 | Galvanized wrought-steel pipe, Pipe posts. 
plain ends. 
Cl SS SES oa eee SA 6by2by2 | Black side outlet cast-iron tees....| Main feed pipe. 
Gere wearer ee oe ae 6by 2 | Black cast-iron tees..........-...- Do. 
P(e gn EES ss eee ae ees 2 | Black malleable 90 ells..........-- Bottom west risers. 
DS SEN Oe Sie Gee ieee eet 2 | Galvanized malleable 90 elis....... Top east-and-west risers. 
TA 5, SP ei ts Sy at eee ae 2 | Galvanized long nipples. .........- _ Feed end nozzle lines. 
cerita oa 8 Bn ee 2 by 13 | Galvanized reducing sockets... --- Nozzle lines 
ee EOE eee ieee A ibys |22s 8 dQ ee ee eee eee Do. 
2A) Rete ree aS Bact) Eee 12 bye tee On ecss eae ees eee pene Do. 
Dara eae P95 Diy so |e do ees es eee Do. 
Peis ite Me Ss Die ee 2 | Standard brass gate valves.......-. Feed end nozzle lines. 
aU oeine 2 i eer de a eC | Beene GO ete ee ee eee ee ee Far end nozzle lines. 
cles As Ea cae tein Gee eee 6 | Standard iron-body gate valve. . End of main. 
7 ee i Se Sa at Re ay 2 | Trade name, etc., turning unions.., Nozzle lines. 
al CO eo Seen eee ee No. —. | Trade name, etc., MOZZIES = aa as Do. 
BOO Sete Se awe ae No. —. | Tradename, etc., galvanized hang- Top of posts: 
ers. 
| 

Note.—Main feed pipe is made 6-inch size full length, as full head of water is to be pumped to farther 
fields for surface irrigation. 
THE DESIGNING OF PUMPING PLANT. 
As in the designing of the field system, the farmer should ob- 
tain all possible assistance in designing a suitable pumping equip- 
tment. It is desirable to purchase machinery for which repairs can 
be obtained readily from a lecal representative, yet when the services 
of an irrigation engineer are not obtainable the farmer should submit 
all possible data regarding the conditions the plant must fill to” 
several reliable pump manufacturers for recommendations and quo- 
tations. A suitable request for the pump alone or a complete outfit 
including engine or motor for this purpose may be submitted in the 
following form: 
GENTLEMEN : 
¥ou are requested to submit recommendations and bids on pumping equip- 
ment for spray irrigation purposes to fill the conditions outlined below. Prices 
should be quoted on (pump, engine, motor) delivered at --_____________-_----=. 

e 
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