E/MJ : engineering and mining journal . Line to Power HouseSeparated by an interval of 80 ft. from its juncturewith the dam is a 13,600-ft. pipe line that extends tothe power house, which is built at a point where Rainy J-in. iron, spaced 2 in. A 7-in. diameter steel pipewhich completes the remaining 3,600 ft. to the powerhouse varies in thickness from one-half to three-quar-ters of an inch and was made by the Walsh SteamBoiler Works, of Holyoke, Mass. Midway on the wooden pipe line is a surge is built of reinforced concrete, is 30 ft. in diameterand has a height of 40 ft., with wal
E/MJ : engineering and mining journal . Line to Power HouseSeparated by an interval of 80 ft. from its juncturewith the dam is a 13,600-ft. pipe line that extends tothe power house, which is built at a point where Rainy J-in. iron, spaced 2 in. A 7-in. diameter steel pipewhich completes the remaining 3,600 ft. to the powerhouse varies in thickness from one-half to three-quar-ters of an inch and was made by the Walsh SteamBoiler Works, of Holyoke, Mass. Midway on the wooden pipe line is a surge is built of reinforced concrete, is 30 ft. in diameterand has a height of 40 ft., with walls 2 ft. thick, it isbanked to the water line with earth, to prevent freezingin severe weather, and is roofed with steel. The preparation of the grade for the pipe line in-volved considerable cutting and filling and the use ofhydraulic washing, the latter being done when it wasimpossible to reach the desired point by means of thecrane used and also to bring material for the fills. Thecountry through which the grade was made is rugged,. iMAKING THE FILL FOR THE PIPE LINE ON THE DEAD RIVER POWER PROJECT Creek enters Dead River. The intervening space be-tween the dam and this pipa line connected by a steelpipe. In this length is a 7-ft. diameter riser, whichextends to a height a few feet above the dam and servesas an air vent when the control valve is closed. Theriser is made of sufficient size so that it may be enteredand the passageway cleared in the event of accumula-tion of ice. Joined to the steel line and extending 10,000ft. in the direction of the power house is a 7-ft. diameterfir pipe line. This line was built by the Continental PipeCo. and is banded on its upper reaches with l-in. iron,spaced about 6 in. and on its lower reaches with as shown typically in an accompanying illustration, andit was necessary to make a maximum fill and cut of35 ft. and 24 ft, respectively. Throughout its entirelength the wood-stave pipe is without reverse grade andjoins the steel pipe at
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmineralindustries
