. The Street railway journal . FIG. 3.—CRIB CONSTRUCTION Dam.—The main dam (Figs, r, 2 and 3) is a cribthe largest of its kind in the country, being 102 ft. widat the base and 57 ft. high at the spillway. The totalLocation.—The power station is located on the Big Hole length at the crest is 450 ft., the spillway alone being 200 94 STREET RAILWAY JOURNAL. [Vol. XIV. No. 2. ft. wide. On the power station side the dam will rise to aheight of 12 ft. above the spillway. 10 in. X 12 i°- Mon-tana pine and fir timber in 12 and 16 ft. lengths, held to-gether by 42 in. drift bolts is used in the constru
. The Street railway journal . FIG. 3.—CRIB CONSTRUCTION Dam.—The main dam (Figs, r, 2 and 3) is a cribthe largest of its kind in the country, being 102 ft. widat the base and 57 ft. high at the spillway. The totalLocation.—The power station is located on the Big Hole length at the crest is 450 ft., the spillway alone being 200 94 STREET RAILWAY JOURNAL. [Vol. XIV. No. 2. ft. wide. On the power station side the dam will rise to aheight of 12 ft. above the spillway. 10 in. X 12 i°- Mon-tana pine and fir timber in 12 and 16 ft. lengths, held to-gether by 42 in. drift bolts is used in the construction of 2,100,000,000 cu. ft. of water. This will secure amplereserve for heavy demands during exceedingly dry seasons. Pozcer Station.—The station, which is not yet com-pleted, will be strictly fireproof and built of granite and. American Electrician FIGS. 4 AND 5.—DETAILS OF TURBINE AND GOVERNOR the crib. (Fig. 3.) The foundations rest upon bed rock,and the crib is filled with concrete to a point 8 ft. abovethe bed of the river, the remainder of the crib being filledwith broken granite. concrete. The main building is located on the south sideof the river, adjacent to the dam. Its ground dimensionsare 125 X 7^ ft., and the transformer room 50 ft. X water for operating the wheels will be supplied to them
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
