Modify type properties to change the construction, materials, treads, and risers for a stair run family.
Run component types are available from 2 predefined system families:


To change type properties, select an element and click Modify tab
Properties panel
 (Type Properties). Changes to type properties apply to all instances in the project. 
| Name | Description | 
|---|---|
| Construction | |
| Underside Surface |  Specifies the style of the underside surface of the run: 
				
  | 
| Structural Depth |  If the Underside Surface is smooth, the Structural Depth is the dimension in the following image: 
				![]() If the underside Surface is stepped, the Structural Depth is the dimension in the following image: ![]()  | 
| Materials and Finishes | |
| Monolithic Material | Click the value and then click the browse button to open the Materials dialog. See Materials. | 
| Tread Material | See Monolithic Material description. | 
| Riser Material | See Monolithic Material description. | 
| Treads | |
| Tread | Select to include treads on steps in the run. | 
| Tread Thickness | Specifies the thickness of the treads. | 
| Tread Profile | Specifies the outline shape for the edge of the tread. The default is rectangular, though a profile could be used to create wedge or angled steps. | 
| Nosing Length | Specifies the amount of the tread depth that overhangs the next tread. | 
| Nosing Profile |  The profile for a sweep added to the front or sides of the tread, depending on the specification for the Apply Nosing Profile property described below. 
				 See Creating a Sweep. Revit has predefined profiles to use for the sweep.  | 
| Apply Nosing Profile | Specifies the nosing edges to which the nosing profile is applied. | 
| Risers | |
| Riser | Select to include risers on steps in the run. | 
| Slanted | Select for slanted risers, or clear for straight risers. | 
| Riser Thickness | Specifies the thickness of the risers. | 
| Riser Profile | Specifies the outline shape for the edge of the riser. The default is Rectangular. | 
| Riser to Tread Connection | Specifies the connection of the riser and tread in relation to each other. | 
| Identity Data | |
| See Stair Component Type Properties for Identity Data definitions. | |