THE SPIERS FALLS DAM ACROSS THE HUDSON

THE SPIERS FALLS DAM ACROSS THE HUDSON

仲夏将大花岗岩d完成am—the Spiers dam—which the Hudson River Waterpower company is building across that river ten miles above Glens Falls. It is one of three which that company is building on the upper Hudson and its tributaries, from all of which will be derived a total of 150,000-horsepower. Of the two still to be built one will be some distance below Spiers Falls dam, and will be called Gay’s Falls; the third—the Ashley Falls—will cross the Sacandaga, and will make in that valley a lake of larger area than lake George The Spiers Falls dam is built —ten miles west of Glens Falls, where there is a great gap in the mountains, through which the Hudson flows with a natural fall of eighty or more feet in five miles to a lower level Between the nearest points of the mountains the dam is constructed. Its length from shore to shore is r.570 feet ; depth at the lowest dip of the river bed. 157 feet ; breadth at base. 115 feet; thickness at a point eight feet below its rounded top, twenty-two feet. In order that the dam might he solidly anchored to the granite hills the river hanks were first excavated ; the course of the river was changed; and the bed scraped clean to the underlying rock This required the use of cofferdams, one of which was of 600 feet, raised to a height of too feet, and strong enough not only to turn aside the river, but also to hear the weight of a railway and the excavation engines. The work was begun on the west side, and the masonry construction was continued 850 feet into the river, where it was halted by an immense hole scooped by the river in its bed, its area being about 150 feet by 350 feet. This was filled to the ordinary level with muck and refuse; but, as the engineers said the dam could not cross it. the depression had to be cleaned out and filled up with solid masonry The pond created by the dam is five miles long and one-third of a mile wide.

仲夏将大花岗岩d完成am—the Spiers dam—which the Hudson River Waterpower company is building across that river ten miles above Glens Falls. It is one of three which that company is building on the upper Hudson and its tributaries, from all of which will be derived a total of 150,000-horsepower. Of the two still to be built one will be some distance below Spiers Falls dam, and will be called Gay’s Falls; the third—the Ashley Falls—will cross the Sacandaga, and will make in that valley a lake of larger area than lake George The Spiers Falls dam is built —ten miles west of Glens Falls, where there is a great gap in the mountains, through which the Hudson flows with a natural fall of eighty or more feet in five miles to a lower level Between the nearest points of the mountains the dam is constructed. Its length from shore to shore is r.570 feet ; depth at the lowest dip of the river bed. 157 feet ; breadth at base. 115 feet; thickness at a point eight feet below its rounded top, twenty-two feet. In order that the dam might he solidly anchored to the granite hills the river hanks were first excavated ; the course of the river was changed; and the bed scraped clean to the underlying rock This required the use of cofferdams, one of which was of 600 feet, raised to a height of too feet, and strong enough not only to turn aside the river, but also to hear the weight of a railway and the excavation engines. The work was begun on the west side, and the masonry construction was continued 850 feet into the river, where it was halted by an immense hole scooped by the river in its bed, its area being about 150 feet by 350 feet. This was filled to the ordinary level with muck and refuse; but, as the engineers said the dam could not cross it. the depression had to be cleaned out and filled up with solid masonry The pond created by the dam is five miles long and one-third of a mile wide.