Example Problem 1 | Design of Isolated Footing under uniform pressure скачать в хорошем качестве

Example Problem 1 | Design of Isolated Footing under uniform pressure

A square footing 2.4 m by 2.4 m by 0.45 m thick supports a rectangular column 0.35 m by 0.40 m at its center. Column loads at service conditions: DL = 680 KN, LL = 400 KN f’c = 20.7 MPa, fy = 275 MPa Concrete cover to the centroid of steel reinforcement = 100 mm. Use 𝜙 = 0.85, Load combination = 1.4𝐷𝐿 + 1.7𝐿𝐿 1. Calculate the maximum wide-beam shear stress. a. 1.72 b. 0.78 c. 1.24 d. 0.64 2. What is the maximum punching shear stress? a. 1.72 b. 0.78 c. 1.24 d. 0.64 3. Determine the number of 20mm bars required for critical moment. a. 10 b. 16 c. 12 d. 14