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University of Technology Sydney 48353: CONCRETE DESIGN Autumn 2024 - Assignment 2 (13 Marks)
The figure illustrates the cross-section of a reinforced concrete column with a hexagonal shape (equal sides), primarily for architectural purposes, and is reinforced with 4N32 and 4N24 steel bars. The material properties are specified as f’c = 40 MPa for concrete compressive strength and fsy = 500 MPa for the yield strength of steel reinforcement. This column section experiences combined axial compression and bending about a horizontal axis (x-x axis).
(a) Calculate the pure axial compression capacity of the section, Nuo. (1 mark)
(b) Determine the depth of the plastic centroid, dpc, for the section about a horizontal axis.
(2 marks)
(c) Determine ?Nu and ?Mu at the balanced condition. (5 marks)
(d) Calculate design bending capacity ?Mu at the pure bending condition. (5 marks)
N24
University of Technology Sydney 48353: CONCRETE DESIGN Autumn 2024 - Assignment 2 (13 Marks)
The figure illustrates the cross-section of a reinforced concrete column with a hexagonal shape (equal sides), primarily for architectural purposes, and is reinforced with 4N32 and 4N24 steel bars. The material properties are specified as f’c = 40 MPa for concrete compressive strength and fsy = 500 MPa for the yield strength of steel reinforcement. This column section experiences combined axial compression and bending about a horizontal axis (x-x axis).
(a) Calculate the pure axial compression capacity of the section, Nuo. (1 mark)
(b) Determine the depth of the plastic centroid, dpc, for the section about a horizontal axis.
(2 marks)
(c) Determine ?Nu and ?Mu at the balanced condition. (5 marks)
(d) Calculate design bending capacity ?Mu at the pure bending condition. (5 marks)
N24
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