This tool places an object coordinate system at any point of a curved beam (Z-axis follows the radial line).
The additional point does not need to lie on the beam. Thus, a UCS can be set on a curved beam at the exact location of an approaching beam for constructing a connection at this location.
To access the command
UCS tool palette: (UCS at curved beam).
Command line: _eAstM5CommEcsAtPickPoint
To define a UCS at a curved beam