A 3.6 m square footing is proposed to be used to support a 530 mm x 309mm RC column loaded with 704 kN dead load and 530 kN live load. Thebottom of the footing is 1.5 m below the ground. Assume soil weighs 19kN/m3 and the allowable soil bearing pressure is 312 kPa. The thickness ofthe footing is 525 mm. f'.= 21 MPa and f, = 420 MPa. It is to bereinforced with 20 mm diameter. Use 24 kN/m3 as the unit weight of%3Dconcrete.Note: For two-way shear, use an effective depth measured from the top ofthe footing until the top of the bottom-most bar (d3)What is the ratio of the Demand Shear Force and the Capacity in TwoWay Shear? (Vu/phiVn)Answer in 4 decimal places (1.6125, 1.5140, 0.8461, etc.)

Two way shear or punching shear is a failure mechanism in members such as slabs and footings under…

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

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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Question

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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