COST OF HYDRO-ELECTRIC POWER PLANTS 737 



Power canal: 



Approximate quantities: 

 4,229,000 cubic yards rock excavation. 

 136,000 cubic yards rubble walls. 



17,960 cubic yards concrete lining. 

 1,000,000 cubic yards sand excavation. 

 Two floating booms. 

 22,000 cubic yards concrete. 



110 tons structural-steel roller dams. 



Estimated cost plus 25 per cent $5,394,000 



Jetty at intake to power canal: 

 Approximate quantities: 

 4,430,000 f.b.m. of timber. 

 665,000 pounds rods and drift pins. 



2,470 cubic yards reinforced concrete. 

 164,000 cubic yards rock fill. 



73,000 cubic yards sand excavation 

 Estimated cost plus 25 per cent 285,000 



Rebuilding Five Mile Lock: 



Raising walls and gates and building draw span, plus 



25 per cent 106,000 



Forebay and power-house substructure: 

 Approximate quantities 

 1,584,000 cubic yards dry rock excavation. 

 137,500 cubic yards rock excavation for removal of cofferdam 

 429,250 cubic yards concrete. 

 5,000,000 pounds steel reinforcement. 

 3,500,000 pounds structural steel for penstock gates. 

 2,300,000 pounds cast steel for penstock gates. 

 1,024,000 pounds steel trash racks. 



24 filler gates and drain gates. 

 $375,000 for cofferdamming and pumping. 

 Estimated cost plus 25 per cent 5,852,000 



Power-house superstructure: 



76 feet by 1670 feet station building. 



Fishway. 



Tunnel through building for railroad. 



Steel bridges for spanning forebay and tailrace. 



Estimated cost plus 25 per cent 1,475,000 



Power-house machinery: 



23 vertical shaft 35,000-Kw. (50,000 Kv.A.) 25-cycle, 

 11,000-volt, 75-R.P.M., 3-phase generators, including 

 stator and rotor, but not shaft or bearings. 



23 mechanically driven exciters, 500 Kw. each; switch- 

 board, low-tension oil switches, busbars, and all mis- 

 cellaneous electrical equipment. 



23 50,000-H.P. vertical shaft 75 R.P.M. turbine units, 

 including shaft and oil bearings, governors, and oil 

 system. 



2 250-ton traveling cranes In power house and 2 50-ton 

 traveling gantry cranes serving penstock gates; mis- 

 cellaneous small equipment. 



Estimated cost plus 15 per cent 12,353,000 



Reconstruction of railroads: 



Total estimated cost plus 25 per cent 687,000 



Other property damage 904,000 



Total physical cost $45,404,000 



Add for interest during one-half of five-year construc- 

 tion period at 4 per cent equals 10 per cent 4,540,000 



Total estimated capital cost $49,944,000 



Use for total capital cost 50,000,000 



