Geometry Category

The Geometry category includes the following properties, depending on the device type:

• All Devices
  • Calculated Points (IsFromAlignProfile, Enumerator) - Indicates whether the device points are calculated based on an alignment and profile, a feature line, or are manual
    See the SRENAMEALIGN command to rename alignments, profiles, or feature lines after associating them with the device
    • Manual - indicates that points are selected manually
    • Feature Line - indicates that points are calculated along a Feature Line; then specify:
      • Device Feature (FromFeatureline, ObjectId) - Feature Line along which the device points are calculated
      • Start Distance (FromFeatureStart, Double) - 2D distance where device construction begins
      • End Distance (FromAlignEnd, Double) - 2D distance where device construction ends
    • Alignment and Profile - indicates that points are calculated along an alignment and elevations are read from a profile; then specify:
      • Device Alignment (FromAlign, ObjectId) - Alignment along which the device points are calculated
      • Device Profile (FromProfile, ObjectId) - Profile along which the device points are calculated
      • Device Start (FromAlignStart, Double) - Starting station of the device along the construction alignment
      • Device End (FromAlignEnd, Double) - Ending station of the device along the construction alignment
• Point devices (Manholes, Inlets, Catch Basins, Headwalls...)
  • Insertion Point (Location, GeometryPoint) - Absolute position (x,y,z) of the device; not necessarily on the reference surface
  • Rim Elevation (RimElevation, Double) - Elevation of the top of the device
    Corresponds to the Z-coordinate of the insertion point
    Note: Not necessarily equal to the reference Surface Elevation (CTER); if modified when a reference surface exists, it will be... recalculated value of the surface offset of the device
  • Angle (Angle, Double) - Counter-clockwise rotation relative to the X-axis of the World Coordinate System (WCS)
    In plan view, this property can be edited by dragging the rotation Grip Point:
  • Angle to Alignment (AlignAngle, Double) - rotation relative to the vector perpendicular to the reference alignment
• Linear devices (pipe, downpipe, steps...)
  • 3D Axis (Axis3D, GeometryCurve) - 3D axis defining the device
    In the labels, it will be readable values:
    • Parameter - indicates the position of the label's insertion point along the device's axis
    • Instantaneous Coordinate - Coordinate at the label's insertion point on the device (using the Parameter property)
    • Instantaneous Slope - Slope at the label's insertion point on the device (using the Parameter property)
    • Instantaneous Tangent - Tangent at the label's insertion point on the device (using the Parameter property)
    • 3D Distance - Coordinate at the label's insertion point on the device (using the Parameter property)
    • 2D Distance - Coordinate at the label's insertion point on the device (using the Parameter property)
  • Length (Length2D, Double) - Plan (2D) length of the device
    Generally defined as:
    
    Length2D = 2D Distance (StartPoint, EndPoint)
  • 3D Length (Length3D, Double) - 3D length of the device
    Generally defined as:
    
    Length3D = Distance (StartPoint, EndPoint)
  • Angle (Angle, Double) - Angle of the PTM -> PTJ vector relative to the World Coordinate System (WCS) X-axis, measured counter-clockwise
    Note: when editing this value in the properties, you are redefining the downstream insertion point (PTJ) while maintaining the same horizontal distance to the upstream insertion point (PTM)
  • Delta H (DeltaH, Double) - Difference between the upstream (CM) and downstream (CD) invert elevations:
    
    DeltaH = (CM - CD)
  • Slope (Slope, Double) - Slope of the device
    Calculated as: Slope = DeltaH / EXT
• Longitudinal devices (channels, gutters, etc.) in addition to the properties of linear devices, the following are included:
  • Arc Length (ArcLength, Double) - Standard length of transition arcs
    In the image below, this property value is 1
  • Minimum Radius (MinRadius, Double) - When modeling the solid, a minimum radius is calculated to prevent the edges on the inside of the curve from overlapping. The value shown in this property is the lowest calculated value among all internal vertices