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The Determination of the Safe Working Stress for Railway Bridges of Wrought Iron and Steel
From the date of the first introduction of railways, it was for many years the custom, in the design of a railway bridge, to treat the Moving Load of the train in precisely the same manner as the Fixed Load of the structure itself. The load due to the weight of the train was simply added to the load due to the weight of the structure (with flooring, ballast, permanent-way, etc.), and the section of iron to be used calculated for a working stress of about one-fourth of the assumed breaking stress. This, for wrought iron in tension, allowed a nominal unit stress of 5 tons per square inch.
The Determination of the Safe Working Stress for Railway Bridges of Wrought Iron and Steel
From the date of the first introduction of railways, it was for many years the custom, in the design of a railway bridge, to treat the Moving Load of the train in precisely the same manner as the Fixed Load of the structure itself. The load due to the weight of the train was simply added to the load due to the weight of the structure (with flooring, ballast, permanent-way, etc.), and the section of iron to be used calculated for a working stress of about one-fourth of the assumed breaking stress. This, for wrought iron in tension, allowed a nominal unit stress of 5 tons per square inch.
The Determination of the Safe Working Stress for Railway Bridges of Wrought Iron and Steel
Stone, E. Herbert (author)
Transactions of the American Society of Civil Engineers ; 41 ; 467-502
2021-01-01
361899-01-01 pages
Article (Journal)
Electronic Resource
Unknown
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