Proceedings Volume 17, PT. 1921

Proceedings Volume 17, PT. 1921

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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. 1921 edition. Excerpt: for most of the types of piling construction. The assumptions which Mr. Newman has made in his calculations are of course subject to modification, as the facts in specific cases may require. But his presentation is believed to constitute a sound method of attack upon the problem. Using the assumptions which he believes necessary or legitimate, any other engineer, if Mr. Newman's method is generally adopted, can arrive at results which, in addition to being trustworthily derived, will have the considerable advantage of being comparable with all the others similarly derived. A life of twenty-five years is assumed for creosoted Douglas fir piling, based upon the showing of the Southern Pacific Long Wharf. It is assumed that in the case of each construction type the cost of construction is financed by the sale of bonds bearing 5 per cent inter est and maturing at the end of the assumed life of the pier; that a sinking fund is established at the same rate of interest to retire the bonds at maturity; and that a depreciation or replacement reserve is laid aside at the same rate of interest for the purpose of reconstruction and returning loss of revenue during the time of reconstruction. The distance from the top of the piling or cylinder to the water surface is taken at 5 feet, the depth of water at 35 feet, and the penetration of the piling at 35 feet. The construction costs are per square foot of deck surface. Based on a twenty-five year life for creosoted piles, the figures show the annual cost of all types for the same length of life. In addition to this the life of all other types has been calculated from an annual cost corresponding to the annual cost of a creosoted piling pier. _ ANNUAL Cosr, 25 YEAR Lrrr: Type A---Creosoted...
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Product details

  • Paperback | 184 pages
  • 189 x 246 x 10mm | 340g
  • United States
  • English
  • black & white illustrations
  • 1236857208
  • 9781236857200