Visually Rotated Bars, gamma angle = 0

[Anonymous]

A colleague set out a simple structure with any bar section gamma angles set to zero. Some of the columns seem to have defined a local bar definition differently to other columns of the same type, and as such appear to have a gamma angle applied.  This is as in the attached image, with several different versions of local axis as well.  Trying to change the bar in the geometry>properties>local bar direction seems to work some of the time.  I would like to know if others have come across this, why it happened in the first place and if there is a way to prevent it?

[Artur.Kosakowski]

Hi @Anonymous

At the first glance it looks like that have their local Z axes pointing at the indicated node or object. Could you attach the model (or just the part visible on the picture you attached) and specify bar numbers to look at?

[Anonymous]

Hiya, so I have attached a cut down version of the model.  It is bars 6 10 11 14 16to18  that have the differing local directions.  Thanks

[Artur.Kosakowski]

Hi @Anonymous

It seems that for some reason the model wasn't attached. try to zip it first and if this doesn't work try to use another internet browser.

If I managed to answer your question(s) press the Accept as Solution button please. This will help other users to find solution(s) much faster. Thank you.

[Artur.Kosakowski]

HI @Anonymous

Disregard the previous post please. I managed to look at yours in the gap between the text was visible and the file was uploaded. 

[Artur.Kosakowski · Accepted solution]

Hi @Anonymous

They are rotated due to the fact that their top and bottom nodes have got different X and Y coordinates (visible when you increase  structure dimensions precision in Job Preferences). Try to define structural axes following the lines of the columns in X and Y direction and introduce one at any Z level and then use the Detailed Correction option with adjustment to the structural axes with e.g. 1 cm precision. 

If I managed to answer your question(s) press the Accept as Solution button please. This will help other users to find solution(s) much faster. Thank you.

[Anonymous]

okay problem solved - it seems that for the columns with different directions they aren't perfectly vertical!  

Thank you for looking into it!

[siliaaPWY4A]

Good morning all, 

regarding the rotated bars...what if i want really to have bars with different x,y but keep my section at gamma angle zero?

regards