Railway Construction: Illustrated With 91 Plates of Railways Executed, With Scales in French And ...
Railway Construction: Illustrated With 91 Plates of Railways Executed, With Scales in French And ...
William Davis Haskoll
The book Railway Construction: Illustrated With 91 Plates of Railways Executed, With Scales in French And ... was written by author William Davis Haskoll Here you can read free online of Railway Construction: Illustrated With 91 Plates of Railways Executed, With Scales in French And ... book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Railway Construction: Illustrated With 91 Plates of Railways Executed, With Scales in French And ... a good or bad book?
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He was credibly informed that this river some- times overflowed its deep banks to a considerable extent, and he found means of tracing the circumstance so as to satisfy himself that such was the ease. If we now take a case of two or three embankments crossing a valley which may form .part of the area of watershed down from moun- tains steep and lofty, some seven or eight hundred feet high, and some- times two or three thousand, a very short calculation will show the im- mense amount of water wh...ich has to be carried away through the culverts ' and bridges in the embankments ; nor is it the quantity alone which has to be considered, and we must not lose sight of the great velocity with which these torrents flow towards the works cros'sing their path. In Europe we almost always find at some short distance below or above a stream to be crossed, some arch by which we may regulate the dimensions of the new work we have to design ; or we readily find some other traces to enable us to ^udge of the requirements of the new case before us : but in those countries to which we now allude, the finding of any former crossings would only form the exception to the general rule, and we must consequently often form our conclusions as to the dimensions required, approximately by some few rough calculations, being careful in deciding that the error shall be on the safe side.
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