On the Section tab of the Beam: definition dialog, you can define parameters of a beam cross-section.
Specify parameters for each type of beam cross-section:
- Name - click the Browse (...) button and make a selection in the Section list dialog
- Material
- Definition axis:
center line 
upper line 
lower line 
- Offset
- when defining a beam by means of the outer or inner line, you can specify an offset from the definition line. If the offset equals 0, the definition line coincides with the upper or lower line. See also: How to define a beam if the offset differs from zero
- Angle - select an available value (0, 45, 90, 135, or 180) or enter a different value for the angle of rotation of the beam cross-section. If you are defining a beam that lies on an inclined plane, you can select World UCS (shown below) to define the orientation of the beam cross-section with respect to the global coordinate system. The definition of this angle refers to the current (local) system of coordinates.
If World UCS is not selected, angle values on the selection list refer to the orientation of an inclined plane. If World UCS is selected, angle values on the selection list refer to directions of axes of the global coordinate system (see the examples below).
Note: After you select the World UCS option, an angle is converted to a new reference system.When World UCS is not selected, and the angle is equal to 0:
After selecting World UCS, an angle of plane inclination is calculated on the selection list (in this case, 17 degrees) for the same position of the cross-section:
When the angle is equal to 0 and World UCS is selected, the position of the beam cross-section changes:
