Excerpt from Structural Engineering
This book is intended as a textbook for college students and as a self-explanatory manual of structural engineering for practical men.
During the author's nineteen years of engineering experience (the greater part of which was spent in actual practice) it fell to his lot to "break in" students from most all of our engineering schools, and he has no apology to offer for the elementary mechanics given in this volume, as he is convinced that no matter how thorough the course in mathematics and theoretical mechanics may be it is quite desirable that students have a short review of the materialistic phase of mechanics at the beginning of the subject of structures to whet their appetites for the work.
As regards the designing given, the author has endeavored to present the usual methods, and this in such a fashion that the average engineering student as well as the practical man can read, understandingly, without having a dictionary, glossary, or a compendium on theoretical mechanics at his elbow.
The author's aim has been to arrange for college use the drawing room exercises throughout the text, so that the work in the classroom and drawing room will go hand in hand. The appreciation of this feature will depend a great deal upon the allotment of hours for the two classes of work. The ratio of two hours recitation to six in drawing is recommended. "Drawing Room Exercise No. 1," at the end of Chapter II, can be started at the very first drawing room period without wasting any time. Chapters I, II, VII, X, and Chapter XI as far as "Deck Plate Girder Bridges," should be read by the time "Drawing Room Exercise No. 1" is finished, so that "Drawing Room Exercise No. 2" can be taken up. During the time spent on "Drawing Room Exercises No. 2, No. 3, and No. 4" ample time will be found for the necessary advance reading - up to "Through Plate Girder Bridges" - and the reading of Chapters III to VI and also VIII and IX. Beyond this the author refrains from making suggestions as to assignments as he has confidence in the ability of instructors to assign correctly the work to suit conditions.
The practical men of limited theoretical training and others desiring a review of the subject treated, will find the book well suited to their case if the chapters be taken up in consecutive order.
The designs given in this book are entirely the work of the author and are designed especially for this work, yet he has endeavored to make them as general as possible.
This book, which treats only of simple structures, is the author's first volume on Structural Engineering. A second volume, which will be known as Higher Structures, is in preparation; this will treat of Movable Bridges, Cantilever, Arch, and Suspension Bridges, Secondary Stresses, etc.
The author desires to acknowledge his appreciation of the work of his assistant, Mr. B. S. Myers, in reading and checking proof and preparing and checking drawings, and to thank Prof. F. O. Dufour for valuable suggestions and criticisms.
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