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The weights of locomotives used by various railroads in the United States have been increasing so steadily, that even those most intimately connected with the design and use of bridges seldom realize what a complete change has taken place in these weights in the last few years. This increase, however, has been the cause of the constant replacement of iron and steel bridges by heavier structures. It will, perhaps, save a repetition of this needless expense, if those in charge of bridge matters look carefully into the increase that has been going on so constantly, and, from the data so obtained, form a fair estimate of how much farther and how rapidly this increase is to continue, so that they may have the bridges under their charge designed for loads such that the structures will not need to be condemned as "too light for traffic," within a period very much shorter than their natural lifetime.
The weights of locomotives used by various railroads in the United States have been increasing so steadily, that even those most intimately connected with the design and use of bridges seldom realize what a complete change has taken place in these weights in the last few years. This increase, however, has been the cause of the constant replacement of iron and steel bridges by heavier structures. It will, perhaps, save a repetition of this needless expense, if those in charge of bridge matters look carefully into the increase that has been going on so constantly, and, from the data so obtained, form a fair estimate of how much farther and how rapidly this increase is to continue, so that they may have the bridges under their charge designed for loads such that the structures will not need to be condemned as "too light for traffic," within a period very much shorter than their natural lifetime.
Live Loads for Railroad Bridges
Hodge, Henry W. (author)
2021-01-01
101905-01-01 pages
Article (Journal)
Electronic Resource
Unknown
Closure to “Live Loads for Railroad Bridges”
ASCE | 2021
|Discussion of “Live Loads for Railroad Bridges”
ASCE | 2021
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