It is an aluminium section for a mullion and transom and the autocad drawing I have is very complex and I tried using autocad mechanical but it does not work as I am not able to select the area as it is very complex. The properties say that the selection is a closed area however on going to content>calculations>moment of inertia, or using aminertia, I cannot select the enclosed area.

Please give me an application where I can find the moment of inertia and corresponding values.

  • $\begingroup$ perhaps divide into smaller parts and then combine the answers, much as we used to do with pencil and paper... $\endgroup$
    – Solar Mike
    Apr 12 '19 at 7:57
  • $\begingroup$ Do it manually. Probably more reliable. $\endgroup$
    – Rhodie
    Apr 17 '19 at 1:02

Okay, one program I found that can help calculate the different properties of a section is "ShapeDesigner SaaS"

the reason that I am not doing it manually is that I would have to break it into at least 35+ parts. This program calculates it in a few moments. Hope this helps some people.


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