COST OF HYDRO-ELECTRIC POWER PLANTS 729 



effective head of 580 feet at a speed of 514 R.P.M., driving five 

 12,000-Kv.A. 6600-volt generators with direct-connected exciters. 

 There are also five transformer banks each consisting of three 

 3333-Kv.A. single-phase transformers for stepping up the voltage 

 to 110,000. 



The unit cost of the power-house buildings and installed equip- 

 ment is given in the following, the cost of the hydraulic and 

 electrical equipment being based on the installed capacity of 

 50,000 Kw. on the original rating and that of the buildings and 

 other equipment on 60,000 Kw., the ultimate capacity of the 

 original rating. 



Per Kw. Capacity. 



Buildings and foundations: 



Rock excavation $0.428 



Concreting foundations and substructure 2.114 



Structural steel 0.522 



Handling and unloading . 030 



Erecting 0. 109 



Brick, sand and cement . 460 



Handling, mixing and laying T . 960 



Windows and doors . 176 



Handling and erecting . 003 



Tile roofing 0. 115 



Concrete tile floors 0.400 



Miscellaneous material 0. 186 



Miscellaneous labor and transportation of men .... . 234 



Painting . 124 



Plumbing 0.053 



Building inspection . 142 



Tailrace: 



Rock excavation . . 197 



Cribbing .' 0.017 



Concreting tailrace walls 0.242 



Total $6.512 



Equipment : 



Hydraulic equipment $6 . 582 



Handling and erecting . 463 



Electrical equipment and erection 6 . 236 



Auxiliary equipment . 999 



Handling and erecting auxiliary equipment . 105 



High- and low-tension switch and bus structure ... . 445 



Water and oil piping system . 244 



Total equipment $15.074 



