COST OF HYDRO-ELECTRIC POWER PLANTS 



719 



LOCKIT POWER SITE 



Estimate of cost: 



Power head 70 feet 



Flow used for estimate 4,500 c. f. s. 



Brake horse-power (80 per cent eff.) 28,630 (21,500 Kw.) 



Dam: 



Total height, 94 feet; length of crest, 720 feet; 



length of spillway, 225 feet. 

 Masonry, 56,014 cubic yards, at $7.00 $392,098.00 



Excavation, 15,533 cubic yards, at $1.25 



Cofferdam 



Trash racks, 30,000 pounds steel, at 5c 



Incidentals and special foundation contingencies . 



19,417.00 



50,000.00 



1,500.00 



56,985.00 



$520,000.00 



Headgates, penstocks, etc.: 



10 sliding headgates, set in place, at $750.00 7,500.00 



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

 1,650 feet ft-inch steel penstock, 11 feet diameter.. 



500 pounds per foot at 6Jc., $32.50 53,625.00 



1450 feet &-inch steel penstock, 10 feet diameter, 



450 pounds, per foot at 7c., $31.50 45,675.00 



118,800.00 



Power-house and draft tubes; 

 Power-house, reinforced concrete, 21,500 Kw., at 



$5.00 per Kw. . . 107,500.00 107,500.00 



Summation $746,300 .00 



Engineering and contingencies, 25 per cent 186,575 .00 



Interest during construction, J of 3 years, at 4 per cent, 



6 per cent approx 57,125 .00 



$990,000.00 

 Hydro-electrical Machinery: 



10 horizontal water wheel units, 2860 H.P., in 



place, speed 360 R.P.M., at $15,000 150,000.00 



10 2500-Kw. generators, 350 R.P.M., at $7.00 per 



Kw 175,000.00 



Exciter turbines and exciters, in place, at 80c. 



per Kw 17,200.00 



Transformers, 21,500 Kw., at $4.00 per Kw 86,000.00 



Switchboard and accessories, cables, etc., at $2.23 



per Kw 48,000.00 



Traveling crane, 30-ton 9,000 . 00 



Quarters, water supply, etc 20,000 .00 



Summation 505,200 .00 



Engineering and contingencies, 20 per cent 101,000 .00 



Interest during construction, 3 per cent approx 18,800 .00 



625,000.00 



Total construction cost $1,615,000 .00 



Total amount of power, E.H.P., 28,630. 



Construction cost, per E.H.P. 56.41 



Assumed right of way cost, per E.H.P 10 .00 



Cost of development, per E.H.P $66 . 41 



