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Ch. 11 &acirc;€“ Columns

# Ch. 11 &acirc;€“ Columns - reinforcement except...

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1 Ch. 8 Slide Ch. 11 – Columns Reading: Section 11-1: Introduction (pp. 481-483) Section 11-2: Tied and Spiral Columns (pp. 483-488) Section 11-4: Interaction Diagrams for RC Columns (pp. 490-504) Problems: Example 11-1

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2 Ch. 8 Slide Concentric Axial Load Compression Capacity Figure 11-8
3 Ch. 8 Slide

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4 Ch. 8 Slide Concentric Axial Load Tension Capacity
5 Ch. 8 Slide Combined Bending and Axial Force

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6 Ch. 8 Slide Flexure-Axial Load Interaction Uniform tension
7 Ch. 8 Slide Procedure Pretty much the same as in beams with distributed

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Unformatted text preview: reinforcement, except that no iteration for T-C = 0 (i.e. Error) is needed. The “Force Error” is equal to the external axial force! • Choose c • Calculate the strains at each rebar level • Calculate the stresses and bar forces • Calculate C c • Sum section forces = P • Take moments about the section mid-depth 8 Ch. 8 Slide Combined Bending and Axial Force 9 Ch. 8 Slide Combined Bending and Axial Force...
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Ch. 11 &acirc;€“ Columns - reinforcement except...

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