A rectangular beam 250 mm wide, 500 mm deep is reinforced at the bottom with a 4-20mm diamter bars and at the top with 2-16 mm bars. Concrete cover to bar centroid at the top is 80 mm and at the bottom is 70 mm. Use concrete strength f'c = 32.09 MPa and steel yield strength fy=345 MPa for 20mm bars and fy=275 MPa for 16mm bars. Determine the maximum steel area for a tension-conctrolled singly reinforced condition in positive bending with the given material strength.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A rectangular beam 250 mm wide, 500 mm deep is reinforced at the bottom with a 4-20mm diamter bars and at the top with 2-16 mm bars. Concrete cover to bar centroid at the top is 80 mm and at the bottom is 70 mm. Use concrete strength f'c = 32.09 MPa and steel yield strength fy=345 MPa for 20mm bars and fy=275 MPa for 16mm bars. Determine the maximum steel area for a tension-conctrolled singly reinforced condition in positive bending with the given material strength. 

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