M. To align a single angle to its flanges

To orient a single angle member aligned to its flanges, use the following procedure.

Select one or more members with single angle profiles in the view window.
On the Specification ribbon tab, select the Beam > Beta Angle tool in the Specifications group.

The Beta Angle dialog opens.

Select the option to align the flanges (i.e., geometric axis):

To align…	Description
the long leg with the local y axis (ST angles)	select the Angle option This will rotate the angle section by 90°-α.
the short leg with the local y axis (ST angles)	select the RAngle option This will rotate the angle section by 180°-α.

α: the angle between the principle axis system and the geometric axis (i.e., parallel to the flange faces) system of the single-angle profile

Note: The orientation with the local y axis is for ST angles. RA angles are defined as being rotated 90° and thus the Angle and RAngle options similarly rotate from that initial orientation.

Select the To Selection option.

Tip: The To View option assigns the specification to all members in the view window.
Click OK.

Table 1. Effect of `BETA ANGLE` and `BETA RANGLE` commands
BETA value =	Zero (0)	ANGLE	RANGLE
`ST` Angle
`RA` Angle