COST OF HYDRO-ELECTRIC POWER PLANTS 725 



heavily timbered prior to the construction period. It was cleared 

 of timber, brush and other debris before the impounding began, 

 at a cost of $21 per acre, represented by $8.35 for cutting and 

 $12.65 for gathering and burning. 



Reservoir Dams. There are two reinforced buttressed dams, 

 the largest is 660 feet in length, 93 feet high to the crest of the 

 spillway and 114 feet to the top walkway. The other dam is 

 much smaller. The quantities involved in the construction of 

 these two dams were 2,200,000 pounds of steel reinforcing, and 

 38,000 cubic yards of concrete. 



The following figures give the cost per cubic yard of these two 

 dams: 



Quarry $1 .611 



Crushing and mixing . 818 



Freight and engine service 1 . 110 



Placing concrete . 744 



Reinforcement 1 . 447 



Placing reinforcement . 823 



Labor 3.746 



Cement 2 . 777 



Sand 126 



Plant, erecting and maintenance 1 .496 



Small tools and supplies 1 . 123 



Lumber 1 . 034 



Miscellaneous expenditures 1 .617 



Superintendence and overhead 1 . 443 



Total $19.915 



Di. erting Dam. This dam is of the gravity type built of 

 cyclopean masonry, heavy stone forming a little over one-third of 

 the mass. The dam is 110 feet high from the stream stratum and 

 has a length of 426 feet. The spillway section is 280 feet in length, 

 made up of ten 28-foot openings between concrete piers. There 

 was used in this dam 39,000 cubic yards of concrete which was 

 placed by the contractors at $4.80 per cubic yard, the actual cost 

 possibly being about $3.70 per cubic yard. The cost of bridge 

 piers and flashboards is additional. The contract price for the 

 excavation work was $1.50 per cubic yard. 



Intake. The intake is a self-contained reinforced structure 

 divided by partitions into five sections. The construction involved 

 about 7000 cubic yards of excavation, mostly rock, and 2670 



