24. (II) (a) A horizontal steel I-beam of cross-sectional
Chapter 13, Problem 24(choose chapter or problem)
24. (II) (a) A horizontal steel I-beam of cross-sectional area 0.041 m2 is rigidly connected to two vertical steel girders. If the beam was installed when the temperature was 30C, what stress is developed in the beam when the temperature drops to -30"C? (b) Is the ultimate strength of the steel exceeded? (c) What stress is developed if the beam is concrete and has a cross-sectional area of 0.13 m2? Will it fracture?
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