moment inertia, autocad moment inertia, autocad dho (Mechanical) (OP) 11 Sep 15 13:18 command AMINERTIA I1, I2, the moment of inertai of X and Y. what is Sc and St listed in the pop out table ? what is s in a circle ? used HELP, could not find the answer? thanks. RE: moment inertia, autocad JNieman (Aerospace) 11 Sep 15 14:04 http://help.autodesk.com/view/AMECH_PP/2016/ENU/?g... The moment of inertia block is a value table containing the results of the moment of inertia calculation. Attributes of the moment of inertia block are as follows: Block title Name of the block. I1 Moment of inertia along the first main axis. I2 Moment of inertia along the second main axis. Sc Distance of the outermost fiber in compression from the neutral axis. St Distance of the outermost fiber in tension from the neutral axis. A Area of the cross section. _________________________________________ NX8.0, Solidworks 2014, AutoCAD, Enovia V5 RE: moment inertia, autocad dho (Mechanical) (OP) 11 Sep 15 14:12 thanks. but what is Sin a circle. when apply a force not along the main axes, it pops up S in circle.