reinforced concrete column of cross-section (300x300) mm2 supports an axial dead load PG =800 kN and an axial live load of PQ =700 kN. The column is supported on a reinforced concrete spread footing founded on soil having an allowable bearing capacity of qa = 100 kPa. It has been decided to use concrete for the footing having f’c = 32 MPa and that cross-sectional area of steel reinforcement to be used should satisfy pmin = (Ast/bd)min= 1.4/fsy, or greater as required for strength, with 30 mm concrete cover to reinforcement (N 20 bar). If the effects of any moments in the column and the self-weight of the column and the footing are to be ignored: Determine the footing total depth (D) (mm) (Hints: Use

reinforced concrete column of cross-section (300x300) mm2 supports an axial dead load PG =800 kN and an axial live load of PQ =700 kN. The column is supported on a reinforced concrete spread footing founded on soil having an allowable bearing capacity of qa = 100 kPa. It has been decided to use concrete for the footing having f’c = 32 MPa and that cross-sectional area of steel reinforcement to be used should satisfy pmin = (Ast/bd)min= 1.4/fsy, or greater as required for strength, with 30 mm concrete cover to reinforcement (N 20 bar). If the effects of any moments in the column and the self-weight of the column and the footing are to be ignored: Determine the footing total depth (D) (mm) (Hints: Use

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter11: Load And Resistance Factor Design (lrfd)

Section: Chapter Questions

Problem 11.1P: A continuous foundation is required in a soil where c=10kN/m2, =26, and =19.0kN/m3. The depth of the...

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