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Introductory Essay to the Study of Fortification

Introductory Essay to the Study of Fortification


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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: 4. Field Fortification; has for its objects the protecting or fortifying of camps, villages, houses, passages of rivers, and the construction of such works as may be required to aid the operations of troops in the field, either in the defence or attack of positions; and intended to last only for the day, week, month, or for the campaign. 5. Every piece of ground to be fortified, is surrounded by a polygon, either regular or irregular, upon the sides of which the works are constructed: see fig. 1, Plate I; the dotted lines a, r, q, b, c, d, form this imaginary enclosure or polygon of fortification: the length of the sides ar, r q, q b, be, cd, da, are generally regulated by the necessity of the works being mutually within the range of the defensive weapons. 6. The defensive works, in permanent fortifications, consist of ramparts, parapets and ditches. In fig. 1, Plate I, the ramparts are the lighter shaded masses, the parapets the darker shaded, and the ditches the unshaded portions. 7. All the works constructed on any one side of the polygon form a front of fortification: thus, there are six fronts in fig. 1. 8. The succession of lines that show the figure of the works, and indicate the direction in which the defensive masses are laid out, is named the outline or tracing: in fig. 1, it will be observed that there are no curves; the tracing of the works is in straight lines forming angles with each other. 9. An angle formed by two lines of works meeting and pointing towards the country is a salient angle; if the angle points inwards it is a re-entering angle. 10. The general height to which the works are raised, is called the relief: if the works be generally high and commanding, they are said to have a bold relief; if the reverse, they have a low relief. ...


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Product Details
  • ISBN-13: 9780217854412
  • Publisher: General Books
  • Publisher Imprint: General Books
  • Height: 246 mm
  • No of Pages: 70
  • Spine Width: 4 mm
  • Width: 189 mm
  • ISBN-10: 0217854419
  • Publisher Date: 02 Feb 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 141 gr

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