One of the most complex elements in Autodesk Revit is railings. There are many different components and some tricky computations so that the railings match the slope of the stairs they are attached to.
In this Webcast, ASCENT's Martha Hollowell covers the process of building a custom railing type. The content for this webcast is taken from the ASCENT learning guide, BIM Management: Template and Family Creation (Chapter 7).