BHoM ETABS Object Relations

The following outlines what BHoM type that corresponds to each of the ETABS types supported

• Elements
• Properties
• Section Properties
• Loading
• Results

Elements

BHoM type	Etabs type	Notes	Implementation
Bar	Frame: Beam Brace Column		Create Read Update Delete
Node	Joint Object		Create Read Update Delete
FeMesh	AreaElement		Create Read Update Delete
RigidLink	Link		Create Read Update Delete
Panel	Floor Wall		Create Read Update Delete
Diaphragm (ETABS_oM)	Diaphragm		Create Read Update Delete

Properties

BHoM type	Etabs type	Notes	Implementation
Material	Material	ETABS does not support all types of material (Timber), materials of those types will be created as NoDesign and read as either GenericIsotropicMaterial or GenericOrthotropicMaterial	Create Read Update Delete
SteelSection	Frame Property	see Section Properties for more details	Create Read Update Delete
ConcreteSection	Frame Property	see Section Properties for more details	Create Read Update Delete
AluminiumSection	Frame Property	see Section Properties for more details	Create Read Update Delete
TimberSection	Frame Property	see Section Properties for more details	Create Read Update Delete
GenericSection	Frame Property	see Section Properties for more details	Create Read Update Delete
ExplicitSection	General Frame Section Property		Create Read Update Delete
CableSection	Not Implemented		Create Read Update Delete
CompositeSection	Not Implemented		Create Read Update Delete
ConstantThickness	Wall (specified) Slab		Create Read Update Delete
LoadingPanelProperty	Not Implemented		Create Read Update Delete
Waffle	Waffle		Create Read Update Delete
Ribbed	Ribbed		Create Read Update Delete
LinkConstraint	Link Property	Linear only	Create Read Update Delete

Section Properties

The following profiles are used for all IGeometricalSections. When read out, the appropriate section type will be assigned, depending on material type.

If a matching Standard section can't be found the following parametric section will be created. Note that some properties such as:

• Corner, toe and fillet radii
• Weld size

will be lost when creating these parametric sections.

BHoM Type	Etabs Type	Notes	Implementation
AngleProfile	Angle Steel Angle Concrete L		Create Read Update Delete
BoxProfile	Tube		Create Read Update Delete
ChannelProfile	Channel		Create Read Update Delete
CircleProfile	Circle		Create Read Update Delete
FabricatedBoxProfile	Tube		Create Read Update Delete
FabricatedISectionProfile	I-Section		Create Read Update Delete
FreeFormProfile	Not Implemented		Create Read Update Delete
GeneralisedFabricatedBoxProfile	Not Implemented		Create Read Update Delete
ISectionProfile	I-Section		Create Read Update Delete
KiteProfile	Not Supported		Create Read Update Delete
RectangleProfile	Rectangle		Create Read Update Delete
TSectionProfile	Tee Steel Tee Concrete Tee		Create Read Update Delete
TubeProfile	Pipe		Create Read Update Delete
ZSectionProfile	Not Implemented		Create Read Update Delete

Loading

BHoM Type	Etabs Type	Notes	Implementation
Loadcase	Load Pattern	Loadcase name must be unique. Can not share name with another Loadcase.	Create Read Update Delete
LoadCombination	Load Combination	LoadCombination name must be unique. Can not share name with another LoadCombination.	Create Read Update Delete
GravityLoad	Self Weight Multiplier	Self Weight Multiplier is applied to all objects per load case.	Create Read Update Delete
PointLoad	Joint Load		Create Read Update Delete
PointDisplacement	Not Implemented		Create Read Update Delete
PointAcceleration	Not Supported		Create Read Update Delete
PointVelocity	Not Supported		Create Read Update Delete
BarUniformlyDistributedLoad	Frame Load - Distributed		Create Read Update Delete
BarVaryingDistributedLoad	Frame Load - Distributed		Create Read Update Delete
BarPointLoad	Frame Load - Point		Create Read Update Delete
BarPrestressLoad	Not Supported		Create Read Update Delete
BarTemperatureLoad	Frame Load - Temperature		Create Read Update Delete
AreaUniformalyDistributedLoad	Shell Load - Uniform		Create Read Update Delete
AreaTemperatureLoad	Shell Load - Temperature		Create Read Update Delete
MassSource	Mass Source	Global	Create Read Update Delete

Results

BHoM Type	Etabs Type	Default Axis	Notes	Implementation
NodeReaction	Support/Spring Reactions	Global		Read
NodeDisplacement	Joint displacement	Global		Read
BarForce	Frame force	Local		Read
BarDeformation	Not Implemented	-		Read
BarDisplacement	Joint displacement	Global	Displacements extracted on all calculation nodes along the bar. No control over number of points extracted during load read.	Read
BarStress	Not Implemented	-		Read
BarStrain	Not Implemented	-		Read
MeshForce	Shell force	Local		Read
MeshDisplacement	Joint displacement	Global		Read
MeshStress	Shell stress	Local	Results in top and bottom layers always returned. No control over result layer is currently possible.	Read
GlobalReactions	Base reactions	Global		Read
ModalDynamics	Modal participating mass ratios	Global		Read