Field Manual for Engineers (Classic Reprint) - Couverture souple

Philetus H. Philbrick

Couverture souple

ISBN 10 : 1330479505 ISBN 13 : 9781330479506

Editeur : Forgotten Books, 2016

Synopsis

Excerpt from Field Manual for Engineers

In Chapter IV the laws of errors in field-work are demonstrated and illustrated; and the best method of conducting a preliminary survey, introduced by the author a generation ago, is explained.

In Chapter V simple and exact formulas for determining the height of a mountain or other object by the dip of the horizon are substituted in place of the approximate formulas in use.

For the stadia, as well as for the telemeter, new formulas are found which require no general computation; and the formula for finding the proper elevation on curves, unlike other formulas, involves no large factors.

In addition to a very general treatment of Compound Curves, Chapter VI includes the location of such curves of any number of branches (pp. 143-5), as well as easy and symmetrical formulas for finding their tangents (p.176).

The reader interested in the philosophy of mathematics will find, it is hoped, an elegant and fruitful illustration of the principles of substitutions in determining general curves to fulfill required conditions on pages 145, 146. This is susceptible of general application. There has also been added a general treatment of the subject of Curves tangent to Curves, including the "Wye Problems"; and also that of Concentric Curves applicable to Parallel Turnouts.

The finding of the angles between the rails at the crossings of curved tracks is also thought to be a valuable addition.

Chapter VII includes a variety of problems in Reversed Curves. The solution of Problems IV, V, and VI were first given to the Senior Class(1869) of the University of Michigan, while the author was in temporary charge.

Chapter VIII treats extensively of Turnouts. The distinction between connecting a straight line and a track, and two tracks, and what is required in each case, is shown on pages 199, 200.

A propos du livre

Présentation de l'éditeur

This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.

Détails de l'édition

• Éditeur: Forgotten Books
• Date d'édition: 2016
• Langue: anglais
• ISBN 10: 1330479505
• ISBN 13: 9781330479506
• Reliure: Broché
• Nombre de pages: 400
• Coordonnées du fabricant: Copytech (UK) Ltd, Trading as Printondemand-worldwide.com; gpsr@podww.com; ; 9 Culley Court; Orton Southgate; Peterborough; Cambridgeshire; PE2 6WA; Royaume-Uni
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