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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