Economical Designing of Timber Trestle Bridges PDF Download
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Author: A. L. Johnson
Publisher:
ISBN:
Category : Trestles
Languages : en
Pages : 76
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Book Description
Author: A. L. Johnson
Publisher:
ISBN:
Category : Trestles
Languages : en
Pages : 76
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Book Description
Author: A. L. Johnson
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: A. L. Johnson
Publisher: Palala Press
ISBN: 9781340952433
Category :
Languages : en
Pages : 62
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Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: A. L. Johnson
Publisher:
ISBN: 9781294972082
Category :
Languages : en
Pages : 72
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Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Henry Charles Becker
Publisher:
ISBN:
Category : Railroad bridges
Languages : en
Pages : 128
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Author: A. L. Johnson
Publisher: Wentworth Press
ISBN: 9781361966846
Category : History
Languages : en
Pages : 58
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Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: A. L. Johnson
Publisher: Nabu Press
ISBN: 9781294790198
Category :
Languages : en
Pages : 72
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Book Description
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.
Author: A. L. Johnson
Publisher: Forgotten Books
ISBN: 9780266256359
Category : Technology & Engineering
Languages : en
Pages : 60
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Book Description
Excerpt from Economical Desiging Timber Trestle Bridges There are in the United States at least miles of timber trestle representing an expenditure of more than These have to be entirely replaced every nine years, on the average, making an annual expenditure of about which, capitalized at 4 per cent, gives an invested capital of $17 necessary to maintain these structures, consuming annually about feet, B. M., of timber, nearly all of it being in large sizes, very valuable for other purposes. Any economy effected, upon however small a margin it is based, is therefore, when multiplied so enormously, of great benefit not only to the railroad companies but to our national forestry interests. The capital invested in timber structures is greatly in excess (proba bly twice as much) of that invested in structures of iron and steel. Every piece in these latter structures is thoroughly inspected, both chemically and physically, and carefully designed to carry the imposed load. Timber structures, on the other hand, have been designed according to the general principal that the Lord takes care of His own, as the great number of fatalities resulting from failures of these strue tures will attest. Experience is not only a dear teacher, but requires endless time to tell What he knows. That this time has not yet expired is evidenced by the anachronisms of design existing in the present practice. It is a well-known principle that a chain is no stronger than its weakest link, and therefore, having one weak link, it is unnecessary that the others should be any stronger. Yet there are thousands of timber structures throughout this country to-day that have, in some parts, barely sufficient strength to carry their working load (with a factor of safety of only 1 - see table on pages 9 and while other por tions of the same structure have from twenty to thirty times this strength. The engineer who would design an iron structure in such a manner would be the laughing stock of the most ignorant man in the profession. 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.
Author: Wolcott Cronk Foster
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 472
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Book Description
Author: Michael A. Ritter
Publisher:
ISBN:
Category : Bridges, Wooden
Languages : en
Pages : 980
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Book Description
This report presents a comprehensive analysis of the design, construction, inspection, and maintenance of timber bridges.
