A reinforced concrete beam has a simple span of 4.5 m and carries a dead load of 20 kN/m and live load of 35 kN/m. Steel covering is 75 mm. Using f’c = 28 MPa and fy = 415 MPa. (a) Determine the maximum moment due to the factored loads. (b) Determine the least dimensions of the beam using the maximum allowable reinforcement ratio (c) Determine the maximum area of steel.

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