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What is the ratio of the Demand Shear Force and the Capacity in Two Way Shear? (Vu/phiVn)

What is the ratio of the Demand Shear Force and the Capacity in Two Way Shear? (Vu/phiVn)

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A 3.6 m square footing is proposed to be used to support a 530 mm x 309 mm RC column loaded with 704 kN dead load and 530 kN live load. The bottom of the footing is 1.5 m below the ground. Assume soil weighs 19 kN/m3 and the allowable soil bearing pressure is 312 kPa. The thickness of the footing is 525 mm. f'.= 21 MPa and f, = 420 MPa. It is to be reinforced with 20 mm diameter. Use 24 kN/m3 as the unit weight of %3D concrete. Note: For two-way shear, use an effective depth measured from the top of the footing until the top of the bottom-most bar (d3) What is the ratio of the Demand Shear Force and the Capacity in Two Way Shear? (Vu/phiVn) Answer in 4 decimal places (1.6125, 1.5140, 0.8461, etc.)
Transcribed Image Text:A 3.6 m square footing is proposed to be used to support a 530 mm x 309 mm RC column loaded with 704 kN dead load and 530 kN live load. The bottom of the footing is 1.5 m below the ground. Assume soil weighs 19 kN/m3 and the allowable soil bearing pressure is 312 kPa. The thickness of the footing is 525 mm. f'.= 21 MPa and f, = 420 MPa. It is to be reinforced with 20 mm diameter. Use 24 kN/m3 as the unit weight of %3D concrete. Note: For two-way shear, use an effective depth measured from the top of the footing until the top of the bottom-most bar (d3) What is the ratio of the Demand Shear Force and the Capacity in Two Way Shear? (Vu/phiVn) Answer in 4 decimal places (1.6125, 1.5140, 0.8461, etc.)
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