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 = 16.42 kN/m³; fc'=21 MPa, fy = 414 MPa, Concrete Cover to bar centroid = 80 mm, SBC=228 kPa. Dimensions: x = 3.90 meters thickness = 599 mm D = 1.58 meters Forces: P1DL = 279 KN P1LL = 227 KN M1DL = 57 kN-m M1LL = 23 kN-m P2DL = 498 KN P2LL = 378 KN M2DL = 67 kN-m M2LL = 57 kN-m Calculate the required area of the footing in m². Note: Present the length and width in multiples of 100 mm. Pl Pl MI MI അങ്ങൾ P2 P2. M2 M2. panana

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Design of Rectangular and Combined Footing Question: (See photo) Note: Avoid rounding off values in the course of solution proper as much as possible. ROUND OFF ONLY AT THE FINAL ANSWER.
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 = 16.42 kN/m3; fc'=21 MPa, fy
= 414 MPa, Concrete Cover to bar
centroid = 80 mm, SBC=228 kPa.
Dimensions:
x = 3.90 meters
thickness = 599 mm
D = 1.58 meters
Forces:
P1DL = 279 kN
P1LL = 227 kN
M1DL = 57 kN-m
M1LL = 23 kN-m
P2DL
= 498 kN
P2LL = 378 kN
M2DL = 67 kN-m
M2LL = 57 kN-m
Calculate the required area of the
footing in m2.
Note: Present the length and width
in multiples of 100 mm.
P1,
N MI
N M2
Transcribed Image Text: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 = 16.42 kN/m3; fc'=21 MPa, fy = 414 MPa, Concrete Cover to bar centroid = 80 mm, SBC=228 kPa. Dimensions: x = 3.90 meters thickness = 599 mm D = 1.58 meters Forces: P1DL = 279 kN P1LL = 227 kN M1DL = 57 kN-m M1LL = 23 kN-m P2DL = 498 kN P2LL = 378 kN M2DL = 67 kN-m M2LL = 57 kN-m Calculate the required area of the footing in m2. Note: Present the length and width in multiples of 100 mm. P1, N MI N M2
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