Descriptive geometry, as applied to the drawing of fortification and sterotomy. For the use of the cadets of the U.S. Military academy. By D.H. Mahan ...
Publisher: Scholarly Publishing Office, University of Michigan Library
Published: December 20, 2005
Language: eng
Format: Paperback
Number of pages: 82
ISBN-13: 9781425503598
Subjects: History / United States / General
First sentence: 1. THE method now in general use, among military engineers, for delineating the plans of permanent fortifications, is similar to the one which had been previously employed for representing the natural surface of ground in topographical and hydrographical maps; and which consists in projecting, on a horizontal plane at any assumed level, the bounding lines of the surfaces and also the horizontal lines cut from them by equidistant horizontal planes, the distances of these lines from the assumed plane being expressed numerically in terms of some linear measure, as a yard, a foot, &amp;c.