Orientate Axis

This option lets you orientate an element by specifying the directions of two of its axes. A limits box for the current element is drawn in the 3D View, together with a display of its axial directions.

Two of the axial directions are shown in the data-entry fields in the center of the form, with the derived third direction immediately below them.

• To change these explicitly, use the option controls to select the axes to be set and enter their required directions

  

  The default orientation for any element is Y is North and Z is Up. With this orientation, the X axis can only be East. If we apply an orientation of Y is North 45 East, the Z axis is allowed to take its default value, so in effect we have done a single axis orientation.