The Application of Graphic and Other Methods to the Design of Structures Specially Prepared for the Use of Engineers Classic Reprint

Excerpt from The Application of Graphic and Other Methods to the Design of Structures: Specially Prepared for the Use of Engineers

IN compiling this work, the Author has tried to make prominent the fact that Graphic Methods are only the instruments by which particular numerical results are often easily obtained, and it considered apart from physical conditions and quantities, they, are simply mathematical exercises, and of little real use to the engineer or the engineering student. For this reason some of the designs b'atre been worked out in detail, and the chapter on working stress has been written.

The sequence of chapters might have been altered perhaps with advantage; but as many of them are comparatively complete in themselves, this is not a matter of great importance. The reason for introducing the theory of bending so early was, that in the Author's opinion it is preferable to show the application to concrete structures of the various graphic methods given in the text; and as that involved the design of a strut, and that again involved the theory of bending, the Author did not hesitate to introduce it where he did. Should any reader not be familiar with the different methods of deducing results there shown, he may pass them over and use the results in the design he has in hand.

Much has been introduced into this work which is not to be found in many books on Graphic Statics, such as the theory of counterbracing, maximum bending moment with moving loads, design of a plate girder, stability of masonry structures, masonry and metal arches, and the theory of structures con taining redundant members but the Author has not attempted to treat these sections exhaustively from every point of view, but rather to introduce them in their general aspect, and thus pave the way for a further study of works much larger than this. At the same time it is hoped that the reader may be able to find in these pages much that will be useful to him in his ordinary work.

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