Transactions of the Institution of Engineers in Scotland Volume 7

Transactions of the Institution of Engineers in Scotland Volume 7

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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. 1885 edition. Excerpt: ... to being coated or corroded. It was only lately found that the coating had any effect upon the discharge of water through the pipes. That had been ascertained by M. Darcy, the director of the Paris Water Works, and his experiments formed the subject of a very elaborate paper, drawn up by General Morin, and read before the Institute in Paris, which showed distinctly that the surface of the pipes had a great influence on the discharge of water. In the paper, General Morin stated that castiron pipes coated with pitch, and glass pipes, gave an increased discharge of about one-third. Possibly those experiments were not sufficiently extended; for it did not appear that the Glasgow Water Works' mains would deliver one-third more than the formulae gave. The coating was a preventative of rust for ten, twelve, or fifteen years. He had, however, been recently in some of the pipes under ground, and found indications that the coating was beginning to give way; and he had no doubt that, before the malleable-iron tubes required renewal, the castiron syphon pipes over the valleys would be spotted so as to pass no more water than if never coated; and therefore it was just as well not to refine too minutely on the formulae, in the case of large works intended to last a good many years. Mr Alexander Smith thought Mr Bateman stated at a meeting in Glasgow, soon after the completion of the works, that the capacity of the 4-feet pipes had never been tried before, and he gave it as his opinion that such pipes would discharge more than the formulae had allowed for them hitherto, reasoning in this way in consequence of the immense amount of water passing through, and the little friction. He thought Mr Bateman was quite right, for in a 4-feet pipe there would only be a...
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Product details

  • Paperback | 58 pages
  • 189 x 246 x 3mm | 122g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236643119
  • 9781236643117