722 



ECONOMICAL ASPECTS 



METOLIUS POWER SITE 



Estimate of cost: 



Power head 



Flow used for estimate 



Brake horse-power (80 per cent eff.) 



210 feet 

 3,400 c. f. s. 

 64,960 (48,700 Kw.) 



Dam: 



Total height, 236 feet; length of crest, 420 feet: 

 length of spillway, 125 feet. 



Masonry, 183,000 cubic yards, at $6.50 



Excavation, 37,570 cubic yards, at $1.25 



Cofferdam 



Wagon roads 



Incidentals and special foundation contingencies . 



Forebay, etc.: 



Excavation, 8000 cubic yards, at $1.25 



Concrete walls, 1500 cubic yards, at $10.00 



Trash racks, 20,000 pounds steel, at 5c 



$1,189,500.00 

 46,962.00 

 75,000.00 

 25,000.00 

 164,;38.00 



10,000.00 



15,000.00 



1,000.00 



$1,500,500.00 



26,000.00 



Diversion line: 



Tunnel excavation and lining, 300 feet by 15 feet. 



by 20 feet, at $150.00 45,000 . 00 



Headgates, penstocks, etc.: 



10 sliding headgates, set in place, at $900.00 9,000 .00 



10 hydraulic relief valves in place, at $1,200.00.. 12,000.00 

 500 feet &-inch steel penstock, 12 feet diameter, 



530 pounds per foot, at 6c., $34.45 17,225.00 



500 feet A-inch s teel penstock, 10 feet diameter, 



565 pounds per foot at 7c., $39.55 19,775.00 



58,000.00 



Power-house and draft tubes: 



Power-house, reinforced concrete, 48,700 Kw., at 



$5.00 per Kw 243,500.00 243,500.00 



Summation $1,873,000.00 



Engineering and contingencies, 25 per cent 468,250 .00 



Interest during construction, 8 per cent 208,750 .00 



$2,550,000.00 

 Hydro-electrical machinery: 



10 horizontal water wheel units, in place, 6496 H.P., 



speed 400 R.P.M., at $24,000.00 240,000.00 



10 5000-Kw. generators, 400 R.P.M., at $5.00 per 



Kw 250,000.00 



Exciter turbines and exciters, in place, at 82c. 



per Kw 40,000 . 00 



Transformers, at $4.00 per Kw 194,800.00 



Switchboard and accessories, cables, etc., at $2.25 



per Kw 109,575 .00 



Traveling crane, 40-ton 15,000 .00 



Quarters, water supply, etc 20,000 .00 



Summation $869,375 . 00 



Engineering and contingencies, 20 per cent 173,875 .00 



Interest during construction, 30 per cent approx 36,750 00 



1,080,000.00 



Total construction cost : $3,630,000 .00 



Total amount of power, E.H.P., 64,960. 



Construction cost, per E.H.P 55 . 88 



Assumed right of way cost, per E.H.P 5 .00 



Cost of development, per E.H.P $60 .88 



