To Calculate a Moment of Inertia for Circular or Rectangular Cross Sections (AutoCAD Mechanical Toolset)

1. Click Content tabCalculation panel drop-downPredefined Profile Sections. Find
2. In the Predefined Profile Sections dialog box, select the type of profile section to which you want to calculate the moment of inertia, and choose OK.
3. Enter the values for the profile section.
4. Insert the moment of inertia block into the drawing.