1. A simply supported beam 300 mm wide, 500 mm deep and spans 5.7 m supports a service super imposed dead load of 9 kN/m and service live load of 9 kN/m. Concrete strength f’c = 21 MPa and steel yield strength fy = 415 MPa. Concrete cover to bar centroid is 70 mm. Determine the depth of equivalent rectangular stress block (mm) at ultimate stage. Write your answer in 2 decimal places only.
1. A simply supported beam 300 mm wide, 500 mm deep and spans 5.7 m supports a service super imposed dead load of 9 kN/m and service live load of 9 kN/m. Concrete strength f’c = 21 MPa and steel yield strength fy = 415 MPa. Concrete cover to bar centroid is 70 mm. Determine the depth of equivalent rectangular stress block (mm) at ultimate stage. Write your answer in 2 decimal places only.
2. A simply supported beam 300 mm wide, 500 mm deep and spans 5 m supports a service super imposed dead load of 7 kN/m and service live load of 6 kN/m. Concrete strength f’c = 21 MPa and steel yield strength fy = 415 MPa. Concrete cover to bar centroid is 70 mm. Determine the required amount of tensile reinforcement in mm^2 as per provisions of NSCP 2015. Write your final answer to the nearest whole number.
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