Question: Solve the problem and choose the best answer A reinforced concrete beam had a width of 280 mm and an effective depth of 520 mm.

Solve the problem and choose the best answer

A reinforced concrete beam had a width of 280 mm and an effective depth of 520 mm. It is reinforced with 4 28 @ bars at the bottom. If fc' = 21 MPa and fs = 140 MPa, n = 9. Which of the following gives the moment carried by the beam in kN.m. Select the correct response: 129.3 184.9 212.47 177.84

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