Run Component Instance Properties

Modify instance properties to change an individual stair run's location line, relative height, winder details, and more.

To change instance properties, select the element and change its properties on the Properties palette.

Name	Description
Constraints
Location Line	Specifies the position of the run relative to the Up-direction path used to create the run. Options include: Exterior Support: Left (1) Run: Left (2) Run: Center (3) Run: Right (4) Exterior Support: Right (5)
Relative Base Height	Specifies the base height of the run relative to the base elevation of the stair.
Relative Top Height	Specifies the top height of the run relative to the base elevation of the stair.
Run Height	Displays the calculated height of the run. (Read only)
Construction
Extend Below Base	Specifies a distance to extend the run below the base level of the stair. This is useful in cases where the run attaches to the face of a floor opening rather than resting on the surface of the floor. To extend the run below the floor, enter a negative number. Examples: Extend Below Base = 0 Extend Below Base = 0' 5" Extend Below Base = -0' 2"
Begin with Riser	Select to add a riser to the beginning of the run. Clear to remove the beginning riser and position the adjacent tread at the base elevation. Clearing this option will change the number of risers in the run. You will need to manually add a riser to maintain the original height. Note: If Begin with Riser is selected, then a notch connection method cannot be used for the run end.
End with Riser	Select to add a riser to the end of the run. Clear to remove the ending riser. Clearing this option will change the number of risers in the run. You will need to manually add or remove risers to maintain the original height. Note: If End with Riser is selected, then a notch connection method cannot be used for the run end.
Winders Note: Winder properties are valid for L-shape and U-shape winder runs.
Winder Style	Specifies the calculation for the winder run steps. Choose from: Balanced - Symmetrical layout style. (Default) Single-point - Asymmetrical layout style. Winder style is calculated from a single center point.
Winder Properties (annotated)	Inside Walk Line Offset Minimum Width on Inside Walk Line Minimum Width on Inside Boundary Fillet Radius Parallel Treads at Start Parallel Treads at End
Inside Walk Line Offset	Specifies the distance of the inside walk path from the interior boundary of the winder run. This distance specifies where to measure the Minimum Width on Inside Walk Line. (Refer to 1 in Winder Properties.)
Minimum Width on Inside Walk Line	Specifies the minimum tread depth measured at the Inside Walk Line Offset. (Read only) (Refer to 2 in Winder Properties.)
Minimum Width on Inside Boundary	Specifies the minimum tread depth at the interior corners of a winder run. (Refer to 3 in Winder Properties.)
Fillet on Corner	Select to apply fillet geometry to the interior corner of the L-shape winder run or to both interior corners of a U-shape winder run.
Fillet Radius	Specifies the radius to be used for the fillet geometry on the interior corners of a winder run. (Refer to 4 in Winder Properties.)
Parallel Treads at Start	Specifies an optional number of uniform steps to add to the beginning of the winder run. (Refer to 5 in Winder Properties.)
Parallel Treads at End	Specifies an optional number of uniform steps to add to the end of the winder run. (Refer to 6 in Winder Properties.)
Dimensions
Actual Run Width	Specifies the value of the tread width excluding the width of independent side supports.
Actual Riser Height	Specifies the value of the riser height. (Read only)
Actual Tread Depth	Specifies the value of the tread depth as measured along the stair path. This is a read-only value.
Actual Number or Risers	(Read only)
Actual Number of Treads	(Read only)
Identity Data
See Stair Component Instance Properties for Identify Data property definitions.
Phasing
See Stair Component Instance Properties for Phasing property definitions.