A steel beam 10 m long is installed in a structure at 20oC.

A steel beam 10 m long is installed in a structure at 20oC.

SPEEDY , Monday, 16th of August 2010 09:44:18 PM

What are the beam’s changes in length at the temperature extremes of

SPEEDY

-30oC to 45oC?

coefficient of linear expansion of steel = 12 x

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10^-6

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brittie , Tuesday, 17th of August 2010 09:24:05 PM

so it changes by delta_T*1.2e-4 m (assuming it is 10 m long at

brittie

25C and delta_T is in C)

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-50*1.2e-4 and 25*1.2e-4 or 6mm shorter and 3mm longer.

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