A footing of size 2.5 m x 2.5 m and 450 mm thick resists characteristics axial loads of 500KN dead and 200 kN imposed from a 300mm square column. The safe bearing pressure on the soil is 230kN/m². a. Check whether the base pressure is safe b. Design the bending reinforcement, assuming 16mm diameter bars c. Check the punching shear

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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QUESTION 3
A footing of size 2.5 m x 2.5 m and 450 mm thick resists characteristics axial loads of 500KN
dead and 200 kN imposed from a 300mm square column. The safe bearing pressure on the
soil is 230kN/m?.
a. Check whether the base pressure is safe
b. Design the bending reinforcement, assuming 16mm diameter bars
c. Check the punching shear
Further Design Information
Characteristic strength of concrete (fm)
= 35 N/mm?
%3D
Characteristic yield stress of steel (f;)
460 N/mm2
Cover to reinforcement
= 75 mm
Diameter of main bars
= 16 mm
Unit weight of concrete
= 24 kN/m³
Transcribed Image Text:QUESTION 3 A footing of size 2.5 m x 2.5 m and 450 mm thick resists characteristics axial loads of 500KN dead and 200 kN imposed from a 300mm square column. The safe bearing pressure on the soil is 230kN/m?. a. Check whether the base pressure is safe b. Design the bending reinforcement, assuming 16mm diameter bars c. Check the punching shear Further Design Information Characteristic strength of concrete (fm) = 35 N/mm? %3D Characteristic yield stress of steel (f;) 460 N/mm2 Cover to reinforcement = 75 mm Diameter of main bars = 16 mm Unit weight of concrete = 24 kN/m³
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