An Elementary Course of Civil Engineering. Tr. from the French of M. I. Sganzin

An Elementary Course of Civil Engineering. Tr. from the French of M. I. Sganzin

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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. 1827 edition. Excerpt: ...of the head, and the other on the slope of the river bank. The joining of a road to a bridge by means of the quarter of a cone is a method which pleases the eye, and gives but little opportunity for the action of the water, besides giving an additional resistance to the abutment. When a return wall is constructed, the coping course of stone should be established in the plane of inclination of of the embankment; in this case there is economy in the masonry, since the profile presents a triangle; but the earth is liable to injuries which can be remedied only by care and constant repairs. Economy prescribes that these walls have only such a length as is absolutely necessary; consequently, they should be placed perpendicular to the heads, but in this case the opening should embrace the whole breadth of the river; the limit to the length of these walls should be the base of the slope of embankment. These walls are generally terminated at their extremities by a socle crownedVvith a dye. Instead of being vertical, if the wing walls are constructed with an inclination it gives them a flare which is advantageous for the debouche. Plate 5, shows the projections of the various parts of a wing wall for a culvert. The divergency resulting from an inclination of the walls is frequently insufficient, and a more considerable opening indispensable to prevent floating bodies from injuring the bridge. When we have only the latter condition to satisfy, it is customary to give the walls an inclination to the axis of the bridge; the exterior line of the base generally has an inclination of 22, to a line parallel to the axis of the bridge, when a right arch. This constant divergency of 22--, however, can only be employed when the course of the river is more

Product details

  • Paperback | 80 pages
  • 189 x 246 x 4mm | 159g
  • United States
  • English
  • black & white illustrations
  • 123695842X
  • 9781236958426