Railway Practice; A Collection of Working Plans and Practical Details of Construction in the Public Works of the Most Celebrated Engineers Comprising Roads, Tramroads, and Railroads &C Volume 1; V. 3

Railway Practice; A Collection of Working Plans and Practical Details of Construction in the Public Works of the Most Celebrated Engineers Comprising Roads, Tramroads, and Railroads &C Volume 1; V. 3

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1859 edition. Excerpt: ...had the effect of diminishing the stability of the platform. It was found that the passage of the trains soon shook their foundations. The small saving effected by the use of these turn-tables does not appear to us to compensate for their defects, more especially where the rollers are very near the centre, for instance, as the original turnplate of the Orleans Railway. Turn-tables are never employed except at the extremities of the stations. The peripheries of the rollers are sometimes rounded, in order to avoid turning them, as well as the bands of iron upon which they roll. When the moveable rollers are formed with rounded peripheries, they require continual repair, and render the working very difficult, since they never preserve the position intended. This is not the case when they are fixed, the weight which they support preventing their getting displaced so easily. The foundation requisite for turn-tables is regulated by the nature of the ground; they should be built on piles (see Plate 30), or on circular walls of masonry (see Plate 33), if the soil is not firm, and whenever they occur on embankments. Timber foundations are more elastic than those constructed of stone, by which they ease the shocks which the platform is subject to receive when the engine is being passed on the turn-table; but as they suffer from the action of the water falling from the locomotives during their passage, stone foundations are therefore preferred. It may be further remarked, that whatever kind of foundation is adopted, the construction of drains to lead off the water must not be neglected. The vertical lining of the well-hole should consist either of walls of cut stone, of cast-iron circles, or of walls formed with small stones, and crowned by wooden curb...show more

Product details

  • Paperback | 226 pages
  • 189 x 246 x 12mm | 413g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236622804
  • 9781236622808