Excerpt from Principles and Practice of Harbour Construction The object of this work is to set forth the general principles which should govern the design and construction of harbours, and to describe the various types of breakwaters and the methods of constructing them usually adopted in modem practice. Drawings of different kinds of breakwaters, including some of the more prominent existing works, are given; and, in addition to these, numerous diagrams and sketches have been introduced wherever it has been considered they would be useful in elucidating the descriptions given in the text. The chance of successfully opposing an enemy depends much upon knowledge, previously obtained, respecting his strength and mode of attack, and of the means and materials available for purposes of defence. It is, therefore, of importance that the harbour-engineer should be well informed respecting the forces against which he will have to contend, and also that he should possess an accurate knowledge of the structure and properties of the different materials which are available for use in harbour construction. The subjects of wind, waves, tides, currents, and materials have therefore been treated of at some length; and attention has also been directed to the more important physical conditions which affect harbour construction. The wide range of subjects which the profession of a civil engineer embraces, renders it imperative on every member of it to avail himself of all the help he can obtain. 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.