A reinforced concrete beam has a width of 300mm and a total depth of 450mm. The...

 

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A reinforced concrete beam has a width of 300mm and a total depth of 450mm. The longitudinal bars at the top are 2-28mm and 4-32mm at the bottom. Concrete strength is f'c=21 MPa and steel yield strength fy3D275 MPa. The steel cover is 70mm (for both top and bottom steel). Use fc(allow) = 0.45f'c and fs(allow) = 0.5fy a) What is the transformed moment of inertia? b} Determine the mornent capacity (kN-m) of the beam using WSD. b) Determine the maximum stresses in the concrete, tension steel, and compression steel if 85% of the moment capacity is applied to the beam. A reinforced concrete beam has a width of 300mm and a total depth of 450mm. The longitudinal bars at the top are 2-28mm and 4-32mm at the bottom. Concrete strength is f'c=21 MPa and steel yield strength fy3D275 MPa. The steel cover is 70mm (for both top and bottom steel). Use fc(allow) = 0.45f'c and fs(allow) = 0.5fy a) What is the transformed moment of inertia? b} Determine the mornent capacity (kN-m) of the beam using WSD. b) Determine the maximum stresses in the concrete, tension steel, and compression steel if 85% of the moment capacity is applied to the beam.

Answer rating: 100% (QA)

f 21 MPa fy 275 MPa b 300 mm h 450 mm d d Fomm 450 70 As 4xx32 3217 mnj A 2x4 x28 12315 m 3D E 2X105 ... View the full answer