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Question: a 30 cm square timber beam is strengthened by the...

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A 30 cm square timber beam is strengthened by the addition of two 4 cm x 6.35 mm steel plates: one plate being secured to its top surface and the other to its bottom surface. The composite beam is simply supported at its ends and carries a udl of 23.35 kN/m over an effective span of 6.096m. Find the maximum bending stresses in the steel and timber. E for the steel is 207 GN/m2, E for the timber is 10.4 GN/m2. [ans- 353mpa, 17.8mpa)

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