. American hydroelectric practice; a compilation of useful data and information on the design, construction and operation of hydroelectric systems, from the penstocks to distribution lines . a a L ^^ ■s g 1 1 3 s: a0 03 ■a S 0 ■5 H ?• s a;PI fe cj ^ 0 0, a0 0) o o a = 0 ii 2 3 d3 0) d c3O a00 3 M § uu >• ta 93 3 Oi .n a; -*J c6g 3 J 0 rH* 00 0■73 d 8 11 0 1 1 P. ^ 3cr ^ T3 CO d 1 ■a 0) t3 1 7 3 S s© •3 0 c3 ^ 1 0 A ^ a C3 S O >, 00 bC e 2 ^ 0 ^ 1 3 -0 0 oj 2 3 3 ■ad 2 03 til 30 ca ^ ^W 73 1:3 c3 fe I 03 -Q *-• X3 ^ i3 S o t3 5 M 0) d _M S 03 -* 8 ^ a ^ g-S^ 3 g ■« -S « ^ S S ^
. American hydroelectric practice; a compilation of useful data and information on the design, construction and operation of hydroelectric systems, from the penstocks to distribution lines . a a L ^^ ■s g 1 1 3 s: a0 03 ■a S 0 ■5 H ?• s a;PI fe cj ^ 0 0, a0 0) o o a = 0 ii 2 3 d3 0) d c3O a00 3 M § uu >• ta 93 3 Oi .n a; -*J c6g 3 J 0 rH* 00 0■73 d 8 11 0 1 1 P. ^ 3cr ^ T3 CO d 1 ■a 0) t3 1 7 3 S s© •3 0 c3 ^ 1 0 A ^ a C3 S O >, 00 bC e 2 ^ 0 ^ 1 3 -0 0 oj 2 3 3 ■ad 2 03 til 30 ca ^ ^W 73 1:3 c3 fe I 03 -Q *-• X3 ^ i3 S o t3 5 M 0) d _M S 03 -* 8 ^ a ^ g-S^ 3 g ■« -S « ^ S S ^ d o !> t: o O X3 B> a a) t< ^d a 2 M £ :S ■« 2 ^^ 3 » M 3 ^ Eh 2 2 S Tunnel Costs.—Excavating the tunnel cost about one and a third timesas much as lining it, these two expenses constituting about 84 per cent, of 224 HYDROELECTRIC PRACTICE the total tunnel expense. Labor required about 65 per cent, of the totalexcavating expense, explosives, power and transportation making up 19per cent. more. The cost of cement and
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyorkmcgrawhillb
