What is the magnitude of the stress level in the support


A 40 foot long aluminum street lighting support is sized and welded into position between two very large bridge beams on a hot summer day when the temperature of the aluminum support is 125 degrees Fahrenheit. At a winter temperature of -20 degrees Fahrenheit, what is the type of stress in the support and what is the magnitude of the stress level in the support?

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Mechanical Engineering: What is the magnitude of the stress level in the support
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