A 414 mm square interior column carries a dead load of 955 kN and a live load of 888 kN. A rectangular footing is required to carry the column loads such that the length of the long side must be equal to twice the width of the short side. Assume base of the footing is 1.3 m below the ground surface. Allowable soil bearing pressure of soil is 191 kPa. f'c = 24.8 MPa, fy = 415 MPa. Unit weight of soil = 15.40 kN/m³ and %3D unit weight of concrete = 23.5 kN/m³. Thickness of the footing = 520 mm. Use concrete cover to bar centroid = 75 mm. Calculate the required amount of reinforcement (in mm²) parallel to the short side to be provided in the center bandwidth.
A 414 mm square interior column carries a dead load of 955 kN and a live load of 888 kN. A rectangular footing is required to carry the column loads such that the length of the long side must be equal to twice the width of the short side. Assume base of the footing is 1.3 m below the ground surface. Allowable soil bearing pressure of soil is 191 kPa. f'c = 24.8 MPa, fy = 415 MPa. Unit weight of soil = 15.40 kN/m³ and %3D unit weight of concrete = 23.5 kN/m³. Thickness of the footing = 520 mm. Use concrete cover to bar centroid = 75 mm. Calculate the required amount of reinforcement (in mm²) parallel to the short side to be provided in the center bandwidth.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A 414 mm square interior column
carries a dead load of 955 kN and a
live load of 888 kN. A rectangular
footing is required to carry the
column loads such that the length of
the long side must be equal to twice
the width of the short side. Assume
base of the footing is 1.3 m below
the ground surface. Allowable soil
bearing pressure of soil is 191 kPa.
f'c = 24.8 MPa, fy = 415 MPa. Unit
weight of soil = 15.40 kN/m3 and
unit weight of concrete = 23.5
kN/m3. Thickness of the footing
%3D
520 mm. Use concrete cover to bar
centroid = 75 mm.
%3D
Calculate the required amount of
reinforcement (in mm²) parallel to the
short side to be provided in the
center bandwidth.
Note: Present the length (L) and
width (B) in multiples of 10 mm.
Solve for the short dimension fırst.
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