Excerpt from Retaining Walls: Their Design and Construction
The presentation of another book on retaining walls is made with the plea that it is essentially a text on the design and construction of retaining walls. The usual text on this subject places much emphasis upon the determination of the lateral thrust of the retained earth; the design and construction of the wall itself is subordinated to this analysis. Without gainsaying the importance of the proper analysis of the action of earth masses, it is felt that such is properly of secondary importance in comparison with the design of the wall itself and the study of the practical problems involved in its construction.
It is the purpose of the first chapter to present the existing theories of lateral earth pressure and then to attempt to codify such theories evolving a simple, yet well-founded expression for the thrust.
An attempt is made to continue this codification throughout the theories of retaining wall design so that a direct and continuous analysis may be made of a wall from the preliminary selection of the type to the finished section. Such mathematical work as is presented is given with this essential object in view.
Under Construction advantage is taken of a classic pamphlet on Plant issued by the Ransome Concrete Plant Co. (which pamphlet should be in the possession of every construction engineer) to illustrate the principles of proper plant selection.
A retaining wall is a structure exposed to public scrutiny and must, therefore, present a pleasing, but not necessarily ornate appearance. Since, in the case of concrete walls, the appearance of the wall is dependent upon the character of the concrete work, it is essential that the edicts of good construction be observed. For this reason the modern development of concreting is presented fully with frequent extracts from some of the recent important reports of laboratory investigators.
It is hoped that proper credit has been given to the authors of all such quoted passages, as well as to other references used.
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