You can add railings as free-standing components to levels, or attach them to hosts (such as floors, ramps, or stairs).
When you sketch a railing, rails and balusters are automatically placed on the railing at evenly spaced intervals. For information on editing baluster and post placement, see Controlling Placement of Balusters and Posts.
The shapes of rails and balusters are determined by the profile families loaded in the project. See Railing Properties.