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A 4.5m simply supported rectangular reinforced concrete beam has a width of 300 mm, effective depth of 530 mm and total depth of 600 mm. The beam is to be reinforced with 20mm diameter bars. The concrete strength f'c= 21 MPa and the steel yield strength fy = 275 MPa. The beam carries a pre-cast 100-mm-thick concrete slab that is 4 m wide. The unit weight of concrete is 24 kN/m³. Floor live load is 2.4 kPa. At ultimate condition, U = 1.2D + 1.6L. KU 1. Calculate the factored moment.

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