A steel beam 10m long is installed in a structure at 20oC. What are the beam's changes in length at the temperature extremes of -30oC to 45oC?

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- Jul 31st 2006, 05:25 PMbabygirla steel beam...
A steel beam 10m long is installed in a structure at 20oC. What are the beam's changes in length at the temperature extremes of -30oC to 45oC?

- Jul 31st 2006, 10:01 PMearbothQuote:

Originally Posted by**babygirl**

let t be the temperature of a solid in °C. Then the length of it in m with respect to temperature in °C is

k is a constant, describing the change of length per Kelvin. For steel it is .

With your problem you got:

The total change of length at a length of 10 m is:

Remark: The temperature of a railroad track in Middle Europe rates from -60°C up to 90°C)

Greetings

EB