![Magnified Moment Calculation for Circular Column Based on ACI 318-02 1 Magnified Moment Calculation for Circular Column Based on ACI 318 02](https://excel.civilmdc.com/wp-content/uploads/2021/12/Magnified-Moment-Calculation-for-Circular-Column-Based-on-ACI-318-02.png)
The moment magnification procedure was a replacement for the reduction factor method contained in the previous 1963 version of ACI 318. In ACI 318-63, slenderness effects were accounted for by dividing the axial load and moments by a reduction factor less than one.