3. Two columns 300mmx300mm and400mmx400mm are loaded by axial andbending forces as shown. They are to besupported by a combined footing shown. Unitweight of concrete 24 kN/m3; Unit weightof soil = 18 kN/m3; fc'=21 MPa, fy = 414MPa, Concrete Cover to bar centroid = 80%D%3Dmm, SBC=150kPa.P=200kNMu=150kNPOL=400KNPu=300kNN Mu=20kNmMu=20kNmMn=40kNmMu=40kNm1.0 m500 mm4500mm4500mmBPreperty Line3.1. Determine the required dimension of thecombined footing. (Show in multiples of100mm)3.2. Calculate the critical ultimate one-wayshear stress. Check for adequacy.3.3. Calculate the critical ultimate punchingshear stress. Check for adequacy.

Solution: Given: column outer: 300x300mm DL = 200 kN, LL = 150 kN Column inner: 400x400 mm DL = 400…

3. Two columns 300mmx300mm and 400mmx400mm are loaded by axial and bending forces as shown. They are to be supported by a combined footing shown. Unit weight of concrete = 24 kN/m3; Unit weight of soil = 18 kN/m3; fc'=21 MPa, fy = 414 MPa, Concrete Cover to bar centroid = 80 mm, SBC=150kPa. %3D %3D %3D P=200KN POL=400kN Mu-150kN Pu=300kN N Mu=20kNm Mu=20kNm Mo=40kNm Mu=40kNm 100mm 1.0 m 500 mm 3D 4500mm 4500mm B 3.1. Determine the required dimension of the combined footing. (Show in multiples of 100mm) 3.2. Calculate the critical ultimate one-way shear stress. Check for adequacy. 3.3. Calculate the critical ultimate punching shear stress. Check for adequacy.

3. Two columns 300mmx300mm and 400mmx400mm are loaded by axial and bending forces as shown. They are to be supported by a combined footing shown. Unit weight of concrete = 24 kN/m3; Unit weight of soil = 18 kN/m3; fc'=21 MPa, fy = 414 MPa, Concrete Cover to bar centroid = 80 mm, SBC=150kPa. %3D %3D %3D P=200KN POL=400kN Mu-150kN Pu=300kN N Mu=20kNm Mu=20kNm Mo=40kNm Mu=40kNm 100mm 1.0 m 500 mm 3D 4500mm 4500mm B 3.1. Determine the required dimension of the combined footing. (Show in multiples of 100mm) 3.2. Calculate the critical ultimate one-way shear stress. Check for adequacy. 3.3. Calculate the critical ultimate punching shear stress. Check for adequacy.

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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