Set the RebarShapeDefinitionByArc.Type property to Spiral.

Namespace: Autodesk.Revit.DB.Structure
Assembly: RevitAPI (in RevitAPI.dll) Version: 21.0.0.0 (21.1.1.109)
Since:  2011

Syntax

C#
public void SetArcTypeSpiral(
	double height,
	double pitch,
	int baseFinishingTurns,
	int topFinishingTurns
)
Visual Basic
Public Sub SetArcTypeSpiral ( _
	height As Double, _
	pitch As Double, _
	baseFinishingTurns As Integer, _
	topFinishingTurns As Integer _
)
Visual C++
public:
void SetArcTypeSpiral(
	double height, 
	double pitch, 
	int baseFinishingTurns, 
	int topFinishingTurns
)

Parameters

height
Type: System..::..Double
The height of the spiral (assuming the spiral is vertical).
pitch
Type: System..::..Double
The pitch, or vertical distance traveled in one rotation.
baseFinishingTurns
Type: System..::..Int32
The number of finishing turns at the lower end of the spiral.
topFinishingTurns
Type: System..::..Int32
The number of finishing turns at the upper end of the spiral.

Remarks

In order to create a spiral definition, you must provide default values for height, pitch, and finishing turns.

Exceptions

ExceptionCondition
Autodesk.Revit.Exceptions..::..ArgumentException baseFinishingTurns is not between 0 and 100. -or- topFinishingTurns is not between 0 and 100.
Autodesk.Revit.Exceptions..::..ArgumentOutOfRangeException The given value for height must be greater than 0 and no more than 30000 feet. -or- The given value for pitch must be greater than 0 and no more than 30000 feet.

See Also