To Specify the Design Rules of a Stair Style

Use this procedure to specify the minimum, maximum, and optimal code limits for the riser height and tread depth, and to specify the stair calculator rules.

Specifying stair design rules

1. Open a tool palette that has a stair tool.
2. Right-click a stair tool, and click Stair Styles.
   Note: Alternatively, select a stair in the drawing, and click Stair tabGeneral panelEdit Style drop-downStair Styles.
3. Select the stair style you want to change.
4. Click the Design Rules tab.
   

5. Specify the default Riser Height and Tread Depth for Minimum Slope, Optimum Slope, and Maximum Slope.
   Note: Use values that represent the actual dimensions of the tread and riser components you want to create, and not just the ratios of these dimensions.

   Subject to the constraints of the calculator rules and the fact that the tread heights must be an even divisor of the floor-to-floor height, the software gets as close as possible to the selected optimal tread length and riser height.

6. To change the default stair calculator, select Use Rule Based Calculator.

   The fields in the Calculator Rule section become available for editing.

7. When you finish changing the properties of the stair style, click OK.