Procedures on how to Design Reinforced Concrete Columns



Tie Design Standards


ACI Standards Columns Bars Details


ACI Column Splice Details




ACI Bar Bending Details


ACI Bar Bending Details


ACI Column Ties Requirements

Structural Design for column using Interaction Diagram


Interaction Diagram plot using Column design software and MS Excel Spreadsheet


Example of ACI Interaction Diagram.


Interaction Diagram-Rectangular Section-Courtesy of ACI


Interaction Diagram-Spiral Column-Courtesy of ACI

Summary of Column Design Requirements

Strength Reduction Factor, phi =0.70 -applicable up through ACI 318-1999; they have been changed to phi =0.65, for compression controlled members (columns and beams under compression controls) beginning with ACI 318-2002 Code, and continuing with the ACI 318-05 and 2008 up to present.

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