Integral Abutment [CUG]

The Integral Abutment workflow item models a monolithic abutment in which the superstructure is rigidly connected to the abutment (no bearings). It supports both 3D visualization and optional finite-element meshing of the abutment, wing walls, and footing. Abutments can be positioned on any support line and referenced by approach slabs, piles, and stems.

General

Location: Support line on which the abutment is located. A single support line must be picked.

Front/Back [Front/Back]: Orientation of the abutment. Front (0) places the back wall facing upstation; Back (1) reverses that orientation so the back wall faces downstation. Choose the value that matches the bridge geometry at the picked support line.

Longitudinal Offset: Offset of the abutment centerline along the PGL. Negative values shift the abutment downstation; positive values shift it upstation.

Transverse Offset: Offset of the abutment centerline perpendicular to the PGL. Default matches the deck offset. Positive values place the abutment to the right of PGL when looking upstation; negative values place it to the left.

Material: Concrete material assigned to the abutment stem, seat, back wall, and wing walls. Pick a previously defined material from Properties > Materials.

Footing

Width (Perpendicular to pgl): Width of the abutment seat (footing) in the transverse direction. Only required when Geometry Source is set to Parameters.

Length: Length of the abutment seat in the longitudinal direction (default 36 in).

Override Top Elevation [No/Yes]: When Yes, the seat top elevation is taken from the user-specified table below instead of the auto-computed PGL-based value. Only visible when Geometry Source is Section and a section point is defined.

Seat Top Elevation: Station-based table defining the top elevation of the seat. Used when the top elevation is overridden or when the seat geometry is driven by parameters.

Override Bottom Elevation [No/Yes]: When Yes, the seat bottom elevation is taken from the user table instead of the default derived from the seat length.

Seat Bottom Elevation: Station-based table defining the bottom elevation of the seat. Only visible when the bottom elevation is overridden.

Bottom Elevation: (Read-only) Computed bottom elevation of the front wall, shown for reference.

Left Plane Rotation: In-plan rotation of the left face of the seat wall. Only enabled when the seat is on a curved/skewed support configuration.

Right Plane Rotation: In-plan rotation of the right face of the seat wall. Same usage as Left Plane Rotation.

Geometry Source [Parameters/Section]: Selects how the seat cross-section is defined. Parameters (0) uses the Width and Length values above. Section (1) uses the picked Section below.

Section: Section library object used when Geometry Source is Section. The section must expose a _seatSection parameter set.

Right Wing Wall

Wing Wall [No/Yes]: Enables or disables the right-hand wing wall. When No, the remaining right-wall parameters are hidden.

Section: Section defining the right wing wall cross-section. The section must expose a _wingwallSection parameter set.

Wall Length: Length of the wing wall along its own axis (default 360 in).

Longitudinal Offset: Offset of the wing wall start from the abutment along the PGL direction.

Transverse Offset: Offset of the wing wall start transverse to the PGL.

Angle of Start Face Plane: Skew of the start face of the wing wall.

Angle of End Face Plane: Skew of the end face of the wing wall.

Rotation Angle: Rotation of the wing wall in plan around its start point.

Override Bottom Elevation [No/Yes]: When Yes, the wing-wall bottom elevation is taken from the input below instead of the default computed elevation.

Bottom Elevation: User-specified bottom elevation of the right wing wall when override is enabled.

Top Vertical Offset: Vertical offset of the top of the wing wall from the PGL-derived top elevation.

Bottom Elevation (readonly): (Read-only) Auto-computed bottom elevation of the right wing wall shown for reference.

Left Wing Wall

Parameters mirror the Right Wing Wall group and control the left-hand wing wall:

Wing Wall [No/Yes]: Enables the left wing wall.

Section: Section definition for the left wing wall.

Wall Length: Length along the wing-wall axis.

Longitudinal Offset: Offset from the abutment along the PGL.

Transverse Offset: Offset transverse to the PGL.

Angle of Start Face Plane: Skew of the start face.

Angle of End Face Plane: Skew of the end face.

Rotation Angle: In-plan rotation.

Override Bottom Elevation [No/Yes]: Toggle for user-input bottom elevation.

Bottom Elevation: User-specified bottom elevation when override is enabled.

Top Vertical Offset: Vertical offset of the wall top from the PGL-derived top elevation.

Bottom Elevation (readonly): (Read-only) Auto-computed bottom elevation of the left wing wall shown for reference.

3D Visualization

Right Chamfer [No/Yes]: Enables a chamfer on the right end of the seat/back-wall interface. When No, the remaining right-chamfer parameters are hidden.

Right Chamfer Width: Chamfer width in the transverse direction.

Right Chamfer Length: Chamfer length in the longitudinal direction.

Right Chamfer Depth: Chamfer depth in the vertical direction.

Right Chamfer Vertical Offset: Vertical offset of the chamfer from the top of the abutment.

Right Chamfer Transverse Offset: Transverse offset of the chamfer from the wing-wall interior face.

Left Chamfer [No/Yes]: Enables a chamfer on the left end of the seat/back-wall interface.

Left Chamfer Width: Chamfer width in the transverse direction.

Left Chamfer Length: Chamfer length in the longitudinal direction.

Left Chamfer Depth: Chamfer depth in the vertical direction.

Left Chamfer Vertical Offset: Vertical offset of the chamfer from the top of the abutment.

Left Chamfer Transverse Offset: Transverse offset of the chamfer from the wing-wall interior face.

FEM

Generate FEM [No/Yes]: When Yes (default), a shell-element FE mesh is generated for the abutment and wing walls. When No, only the 3D visualization is produced.

Mesh Size: Target element size used when meshing the abutment surfaces (default 120 in).

Rigid Material: Rigid material used for stiff FE link elements inside the abutment mesh (picks a Material library object).

Rigid Section: Rigid section used for the same FE link elements (picks a Section library object).

Mesh Algorithm [GridMesh/MeshAdapt/Automatic/Initial mesh only/Delaunay/Frontal Delaunay/Frontal Delaunay for Quads/Packing of Parallelograms/Quasi structured Quad]: Meshing algorithm applied to the abutment and wing-wall surfaces. The default is MeshAdapt.

Override Right Wing Wall Thickness [No/Yes]: When Yes, the right wing wall thickness used by FEM is taken from the input below instead of the section's minimum width.

Override Left Wing Wall Thickness [No/Yes]: When Yes, the left wing wall thickness used by FEM is taken from the input below instead of the section's minimum width.

Right Wing Wall Thickness: User-specified FE thickness for the right wing wall. Only enabled when the corresponding override is Yes.

Left Wing Wall Thickness: User-specified FE thickness for the left wing wall. Only enabled when the corresponding override is Yes.

Quantities

All values in this group are derived from the generated geometry and are displayed for reference; they cannot be edited.

Total Top Face Area: (Read-only) Combined top-face area of the seat, back wall, and wing walls.

Total Bottom Face Area: (Read-only) Combined bottom-face area of the seat, back wall, and wing walls.

Total Surface Area: (Read-only) Total exterior surface area of the abutment.

Max Height Left Wing Wall: (Read-only) Maximum height of the left wing wall.

Min Height Left Wing Wall: (Read-only) Minimum height of the left wing wall.

Length Left Wing Wall: (Read-only) Length of the left wing wall.

Thickness Left Wing Wall: (Read-only) Thickness of the left wing wall.

Max Height Right Wing Wall: (Read-only) Maximum height of the right wing wall.

Min Height Right Wing Wall: (Read-only) Minimum height of the right wing wall.

Length Right Wing Wall: (Read-only) Length of the right wing wall.

Thickness Right Wing Wall: (Read-only) Thickness of the right wing wall.

Seat Max Depth: (Read-only) Maximum vertical depth of the seat.

Seat Min Depth: (Read-only) Minimum vertical depth of the seat.

Seat Thickness: (Read-only) Longitudinal thickness of the seat.

Seat Width: (Read-only) Transverse width of the seat.

Back Wall Max Depth: (Read-only) Maximum vertical depth of the back wall.

Back Wall Min Depth: (Read-only) Minimum vertical depth of the back wall.

Back Wall Thickness: (Read-only) Longitudinal thickness of the back wall.

Back Wall Width: (Read-only) Transverse width of the back wall.

Volume: (Read-only) Total concrete volume of the abutment.

Rebar Density(per cubic foot): Assumed rebar mass per unit volume used for quantity takeoff.

Rebar Weight: (Read-only) Total rebar weight derived from Rebar Density and the abutment volume.

Weight: (Read-only) Total concrete weight derived from the material unit weight and the abutment volume.

Filled Bottom Area Volume: Volume of the filled region at the bottom of the abutment, used when the seat extends below the default footprint. (Read-only)

Material (Read-Only): Name of the assigned concrete material, shown for verification. (Read-only)

Referencing Objects

These rows list the objects that reference this abutment — useful for checking which piles, pile groups, and approach slabs are tied to it.

Piles: (Read-only) List of Pile workflow items that reference this abutment.

Pile Groups: (Read-only) List of Pile Group workflow items that reference this abutment.

ApproachSlab: (Read-only) List of Approach Slab workflow items that reference this abutment.

IFC

Type [IfcBridge/IfcBridgePart/IfcBeam/IfcColumn/IfcSlab/IfcFooting/IfcPile/IfcBearing/IfcReinforcingBar/IfcReinforcingMesh/IfcTendon/IfcMechanicalFastener/IfcAlignment/IfcPositioningElement/IfcKerb/IfcGuardrail/IfcSurfaceFeature/IfcElementAssembly/IfcCableSegment/IfcSensor/IfcDistributionElement/IfcPlate/IfcWall/IfcRail/IfcRoad/IfcDiscreteAccessory/IfcDistributionSystem/IfcMember/IfcBuildingElementProxy]: IFC entity used when exporting this abutment. Default IfcBridge.

Predefined Type [ABUTMENT/DECK/DECK_SEGMENT/FOUNDATION/PIER/PIER_SEGMENT/PYLON/SUBSTRUCTURE/SUPERSTRUCTURE/SURFACESTRUCTURE/USERDEFINED/NOTDEFINED]: IFC predefined type. Default ABUTMENT.

Parent [BRIDGE/SUPERSTRUCTURE/DECK/SUBSTRUCTURE/FOUNDATION/APPROACH_STRUCTURE/RETAINING_STRUCTURE]: IFC parent container under which the abutment is exported. Default SUBSTRUCTURE.