Plates of Summary of the Course of Permanent Fortification and of the Attack and Defence of Permanent Works PDF Download
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Author: Dennis Hart Mahan
Publisher:
ISBN:
Category : Defensive (Military science)
Languages : en
Pages : 1
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Author: Dennis Hart Mahan
Publisher:
ISBN:
Category : Defensive (Military science)
Languages : en
Pages : 1
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Author: Dennis Hart Mahan
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 364
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Author: D. H. Mahan
Publisher:
ISBN: 9781331332275
Category : Technology & Engineering
Languages : en
Pages : 358
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Excerpt from Summary of the Course of Permanent Fortification: And of the Attack and Defence of Permanent Works, for the Use of the Cadets of the U. S. Military Academy 3... References. The numbers which express the distances of the lines from the plane of comparison, are termed references. The unit in which these distances are expressed, is usually the linear foot and its decimal divisions. As the position assumed for the plane of comparison is arbitrary, it may be taken either above or below every point of the surface to be projected. In the French military service, it is usually taken above; in our own, below the surface. The latter seems the more natural and is more convenient, as vertical distances are more habitually estimated from below upward than in the contrary direction. Each of these methods has the advantage of requiring but one kind of symbol to be used, viz: the numerals expressing the references; whereas, if the plane of comparison were so taken that some of the lines projected should lie on one side of it and some on the other, then it would be necessary to use, in connection with the references, the algebraic symbols plus or minus, to designate those lines above the plane from those below it. This method of representing objects has given rise to a very useful modification of the ordinary one of orthogonal projections on two planes, and has been denominated one plane descriptive geometry; the plane of comparison being the sole plane of projection; the references taking the place of the usual projections on a vertical plane. By this modification, the number of lines to be drawn is greatly decreased; the complication of the drawing lessened; the graphical operations required in the solution of problems, presented by the drawing, simplified; and the relations of the parts more readily seized upon, as the eye is confined to one plane of projection alone. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Dennis Hart Mahan
Publisher:
ISBN: 9781375459532
Category : History
Languages : en
Pages : 530
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Author: D. H. (Dennis Hart) Mahan
Publisher: Franklin Classics Trade Press
ISBN: 9780353156012
Category : History
Languages : en
Pages : 358
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Book Description
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Dennis Hart Mahan
Publisher: Nabu Press
ISBN: 9781294610434
Category :
Languages : en
Pages : 530
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Book Description
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.
Author:
Publisher:
ISBN:
Category : Union catalogs
Languages : en
Pages : 712
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Author: United States Military Academy. Library
Publisher:
ISBN:
Category : Military art and science
Languages : en
Pages : 754
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 764
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Author: T. Michael Parrish
Publisher:
ISBN:
Category : American literature
Languages : en
Pages : 1132
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