A 2.5m x 2.5m square footing supports a 250mm x 400mm column. Given data: Thickness of footing -0.70m Total factored axial load -1,818 kN Materials: Concrete.fc - 20.7 MPa Steel bars, fy - 280 MPa (20mm diameter both ways) Clear bar covering - 75 mm Strength reduction factors -0.75 for shear -0.90 for bending a. Calculate the actual nominal shear stress in the footing (MPa) at the critical section for beam shear action. b. Calculate the actual ultimate shear stress in the footing (MPa) at the critical section for beam shear action. c. Calculate the actual nominal shear stress in the footing (MPa) at the critical section for punch shear action. d. Calculate the actual nominal shear stress in the footing (MPa) at the critical section for punch shear action. e. Calculate the required number of 20mm bars
A 2.5m x 2.5m square footing supports a 250mm x 400mm column. Given data: Thickness of footing -0.70m Total factored axial load -1,818 kN Materials: Concrete.fc - 20.7 MPa Steel bars, fy - 280 MPa (20mm diameter both ways) Clear bar covering - 75 mm Strength reduction factors -0.75 for shear -0.90 for bending a. Calculate the actual nominal shear stress in the footing (MPa) at the critical section for beam shear action. b. Calculate the actual ultimate shear stress in the footing (MPa) at the critical section for beam shear action. c. Calculate the actual nominal shear stress in the footing (MPa) at the critical section for punch shear action. d. Calculate the actual nominal shear stress in the footing (MPa) at the critical section for punch shear action. e. Calculate the required number of 20mm bars
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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