05-04-2010, 02:07 PM
Sorry for the incomplete info... Draw a semi-circle or arc in Autocad, divide it into small segment (Use DIV command). Then, enable node object snapping. You can delete the circle (real circle in this case) afterwards. Draw lines in between nodes one by one, until you create a circular pattern that looks like a circle but actually it is just a set of small successive segments of line, and that will be your curved member.