Rock Products Volume 16, No. 9

Rock Products Volume 16, No. 9

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 edition. Excerpt: ... TO THE BASIN OF THE RESERVOIR. ample, a stock of 33,000 barrels of cement was kept in reserve with a proportionate amount of hydrated lime. The total amount of cement used on the entire plant amounted to about 186,000 barrels. Dam No. one, one of the three closing the great reservoir, required 61,000 cubic feet of cyclopean concrete. This was placed in 60 days' time. The dam is 1,000 feet long and has a maximum height of 147 feet. At its top, the crest is 10 feet wide; at its bottom, the base is 80 feet in width. A trestle was constructed fully as high as the proposed crest, and materials were conveyed along its deck upon a standard-gage track. Storage bins Teceived the materials dumped from the material cars; from these they were fed to nine concrete mixers below. The other two dams at this level are smaller, containing respectively 31,000 and 31,300 cubic yards of concrete. All three dams have vertical faces on the upstream side; on the downstream side, the faces are arranged in the form of steps. The stepped faces are provided in view of the future elevation of the crests, when the steps will supply suitable support and contact surface for the new material. The ultimate increase in height is possible, in so far as suitable foundations are concerned, because all three dams are built on solid living granite. The intake tower which receives the water from the reservoir is built of reinforced concrete. It is 104 feet high and has an internal diameter of 20 feet. The walls are two feet thick. The power is developed by two separate drops. The one to powerhouse No. one has a height of 1,900 feet. The second stage, down to powerhouse No. two, has an effective head of 1,780 feet. The turbine units employed in these power houses are among the...show more

Product details

  • Paperback | 42 pages
  • 189 x 246 x 2mm | 95g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236854756
  • 9781236854759