Modify type properties to change the materials and dimensions for a stair support family.
Support 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 | 
|---|---|
| Materials and Finishes | |
| Material | Click the value and then click the browse button to open the Materials dialog. See Materials. | 
| Dimensions | |
| Section Profile | Specifies the profile for the support in section view. The default is Rectangle. | 
| Flip Section Profile | Select this option to flip the profile shape for the support. This option is helpful if you are using a section profile shape like a C-Channel, and need to flip the profile direction. | 
| Structural Depth on Run |  Specifies the depth of the support where it overlaps the run consistently. The depth is measured perpendicular to the support. 
				 Refer to B in the following images: ![]() ![]()  | 
| Structural Depth on Landing |  Specifies the distance between the bottom surface of the landing tread and the bottom surface of the support. 
				![]()  | 
| Total Depth | Specifies the total depth of the support. The depth is measured perpendicular to the support. 
				 Refer to A in the following images: ![]() ![]()  | 
| Width | Specifies the width or thickness of the support. 
				![]()  | 
| Identity Data | |
| See Stair Component Type Properties for Identity Data definitions. | |