Erik Kostson
Ansys Employee
PLease see information/training about beam modelling and solid modelling (we have courses on that) in Ansys.
So for frame type of structure, we can either use beam elements just like you did initially and you showed in your first post and what one would recommend to do here (if we care about the members themselves and not their connection details or any other 3D details that are not captured by a beam elements) , or we can use 3D parts which you show above and which should not be really used here since you will get a lot of strange stress results (due to corners).

Since we are going off topic here, please create a new post if you have any other questions, and other members in the forum might be able to help also.

All the best of luck.

Erik