Rotation of Angle Members

I have a couple of questions concerning the rotation of singe angle members.  Which command should I use to rotate these angle members?  "Beta Angle" or "Beta 45" (or 135 or 225 or whatever your required angle is)?  I pose this question because I would have thought the results would have been the same but they are not.  The results for "Beta Angle" actually match those of an angle member modeled along its principal axis with no rotation or "Beta 0".  I also would have thought the properties for the weld design, namely Sz, Sy, CH & CV, would have changed with this "Beta Angle" command since the member end forces are no longer being applied in the same manner to the weld.  Any thoughts?

Parents
  • Sir,

    Lets stop here.  If you have a 3D trusses, each member have its own flat surface in its own local axes. People know that beta angle to orient.  Why I have to orient the angle, because to make the geometrical axes orientation.  That's only framing, but not loading where thousands of members have loading for wind in every 10 degree orientation in a vertical global axis. 

    You basically missed the use of geometrical properties.  And blundered for the users.

    I am a engineer and designer. not a tech guy.

    -Nasim Akhtar
Reply
  • Sir,

    Lets stop here.  If you have a 3D trusses, each member have its own flat surface in its own local axes. People know that beta angle to orient.  Why I have to orient the angle, because to make the geometrical axes orientation.  That's only framing, but not loading where thousands of members have loading for wind in every 10 degree orientation in a vertical global axis. 

    You basically missed the use of geometrical properties.  And blundered for the users.

    I am a engineer and designer. not a tech guy.

    -Nasim Akhtar
Children