WOOD PIPE FOR CONVEYING IRRIGATION WATER. 



27 



head ditches or flumes, tapping it and inserting small hydrants 

 at the head of each tree row or at closer intervals. 



These hydrants usually consist of three- fourths-inch galvanized- 

 iron pipe which is screwed into the shell of the wood pipe, and 

 equipped with a cheap valve for regulating the discharge. The cost 

 of such outlets, including the threaded nipples 18 inches long and 

 the valves, is about 40 cents each. 



The conditions of irrigation service are in perhaps a majority 

 of cases unfavorable to a long life of this kind of pipe, and where 

 the pipe is empty for several months out of the year decay is often 

 very rapid, but except for this disadvantage no substitute has been 

 found which meets so many of the other requirements of irrigation 

 service. 



COST OF MACHINE-BANDED WOOD PIPE. 



The cost of machine-banded wood pipe varies with the head for 

 which it is made, fluctuations in the market prices of materials, the 

 kind of wood used, etc., and will differ also in accordance with freight 

 or transportation charges from the factories to different points. 



The following prices f. o. b. cars at Seattle, Wash., quoted for 

 estimating purposes only, will give some idea of the present prices 

 of fir pipe, and from the weights given the freight charges to any 

 point may be ascertained by consulting railway rates. A minimum 

 carload is 30,000 pounds. 



Table showing prices and weights per linear foot of machine-banded wood pipe, 

 f. o. b. cars, Seattle, Wash. 



Diameter. 



Head. 



Price. 



Weight. 



Diameter. 



Head. 



Price. 



Weight. 



Diameter. 



Head. 



Price. 



Weight. 









Pounds. 









Pounds. 









Pounds. 





50 



SO. 087 



3.1 



10-inch... 



50 



SO. 268 



13.1 



18-inch... 



50 



SO. 597 



26.9 





100 



.090 



3.2 





100 



.347 



14.7 





100 



.750 



30.8 





150 



.092 



3.2 





150 



.392 



15.7 





150 



.884 



34.6 





200 



.100 



3.4 





200 



.455 



17.3 





200 



.992 



38.0 





250 



.105 



3.5 





250 



.479 



18.4 





250 



1.266 



45.6 





300 



.116 



3.6 





300 



.503 



19.4 





300 



1.528 



54.8 



4-inch 



50 



.129 



5.8 



12-inch... 



50 



.322 



16.8 



20-inch... 



50 



.655 



29.6 





100 



.131 



5.9 





100 



.413 



18.9 





100 



.828 



34.4 





150 



.134 



6.0 





150 



.450 



19.8 





150 



1.033 



40.0 





200 



.166 



6.3 





200 



.532 



21.7 





200 



1.192 



44.0 





250 



.176 



7.0 





250 



.618 



23.8 





250 



1.428 



52.0 





300 



.189- 



7.3 





300 



.660 



25.3 





300 



1.615 



57.5 



6-inch 



50 



.163 



8.3 



14-inch... 



50 



.445 



21.3 



22-inch... 



50 



.773 



33.9 





100 



.168 



8.9 





100 



.550 



23.0 





100 



.990 



40.1 





150 



.184 



9.1 





150 



.629 



25.3 





150 



1.184 



45.2 





200 



.226 



9.6 





200 



.745 



28.2 





200 



1.415 



52.7 





250 



.242 



10.0 





250 



.834 



29.9 





250 



1.710 



59.8 





300 



.258 



10.4 





300 



.916 



32.3 





300 



1.845 



65.5 





50 



.203 



10.3 



16-inch... 



50 



.547 



24.7 



24-inch... 



50 



.855 



37.3 





100 



.224 



10.5 





100 



.639 



26.9 





100 



1.075 



44.0 





150 



.292 



12.8 





150 



.734 



29.3 





150 



1.334 



51.0 





200 



.332 



13.7 





200 



.871 



33.4 





200 



1.627 



59.3 





250 



.366 



15.6 





250 



.987 



36.2 





250 



1.934 



67.8 





300 



.387 



16.2 





300 



1.132 



40.2 





300 



2.100 



74.3 



The cost of wood pipe is in most places materially less than that of 

 cast iron or steel, though direct comparisons are difficult to make. 

 At the time the waterworks were built at Astoria in 1895, Mr. Adams 



