. Journal of electricity, power, and gas . nd fourmanholes. After passing the eighth pipe line outlet, theheader, without further reduction in size, makes aturn in toward the mountain, this turn being imbeddedin a heavy block of concrete, and then turns againfollowing the slant of the hill, until an altitude isreached 22 ft. above the water level at the is to provide for the liberation of surges which One noticeable feature, not in accordance withWestern American practice, is the method of connect-ing the sections of pipe together. Instead of havingan inside course, slipped into an
. Journal of electricity, power, and gas . nd fourmanholes. After passing the eighth pipe line outlet, theheader, without further reduction in size, makes aturn in toward the mountain, this turn being imbeddedin a heavy block of concrete, and then turns againfollowing the slant of the hill, until an altitude isreached 22 ft. above the water level at the is to provide for the liberation of surges which One noticeable feature, not in accordance withWestern American practice, is the method of connect-ing the sections of pipe together. Instead of havingan inside course, slipped into an outside course, allsections are the same diameter. One end of the sectionis expanded so as to form a V-shaped ferrule, theother end is expanded to fit the first. The rivets areplaced in the ordinary manner, but the groove on theinside made by the ferrule prevents the projection ofthe rivet heads, and thereby improves the friction fac-tor. The sections are 10 ft. 7 in. long. The sheet steeland the pipes were made in Germany and the header. General View in Main Bay of the Poircrnouse. might occur, due to sudden changes in velocity offlow. A concrete chamber is provided at the end ofthis surge pipe to deflect the overflow into a chute-flume, which carries it down the mountainside to apoint where it can cause no damage. Placed near the header is a building containing anair compressor, belted to an 85 induction supplies compressed air for operating the cable-way to the opposite bank of the river and also a smallcable railroad, which runs between the power-houseand the header. The pipe-lines, like the gate and butterfly valves,are 5 ft. inside diameter. They are sheet steel, weldedon the longitudinal seam, and vary in thickness from13/32 in. at the top to 43/64 in. at the lower end, was made in Philadelphia, the latter was riveted to-gether on the ground. The pipe-lines are supportedat intervals by concrete carried well down into thebedrock. The average length is 700
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Keywords: ., bookcentury1800, bookdecade1890, bookidjo, booksubjectelectricity
