Modifying Stair Dimensions

Change common stair dimensions like the actual run width or floor-to-floor height.

Refer to the following table for a list of common stair modifications.

If you want to change the...	then...
tread depth calculation rules for a stair type	edit the Calculation Rules in the stair type properties. See Using the Stair Calculator.
actual run width for a stair type	change the value for the Minimum Run Width. See Stair Component Type Properties.
actual run width for a run instance	use one of the following methods: change the value for the Actual Run Width instance property. See Run Component Instance Properties. in stair assembly edit mode, select the run, and edit the temporary dimension for the run width. The direction in which the run width changes is dependent on the Location Line value for the run. For example if you increase the run width on a run with Location Line set to Run: Left, then the run expands to the right in the Up direction, maintaining the location line position.
floor-to-floor height of a stair	use one of the following methods to modify the floor-to-floor height: Modify any of the following instance properties: Base Level Base Offset Top Level Top Offset In Stair instance properties, specify unconnected for Top Level, and specify a value for Desired Stair Height. Modify the height of the levels. See Moving Levels. See Stair Component Instance Properties. The value for the Actual Riser Height property changes to accommodate the stair height change. The Stair layout remains the same, including the Actual Tread Depth, and Total Actual Number of Risers values.
number of risers	modify the Maximum Riser Height stair type property. See Stair Component Type Properties.
actual tread depth	modify the Actual Tread Depth stair instance property. See Stair Component Instance Properties. The floor-to-floor height of the stair is maintained and the Total Actual Number of Risers remains the same.