The IfcBeamStandardCase is a standard case element to exchange parametric definitions of the beam shape.

The example includes the local placement, the body shape representation, the material profile set assignment, the beam occurrence and beam type definitions. The focus points are the use of cardinal points to align the beam profile to the axis, the use of parametric profile definitions and the assignment of material information to the profile.

 

standard_case_element_beam-2.png 44,2 KB

The example in Figure 493 declares two parametric beam types, one with an I-Shape profile and the other with a T-Shape profile. Each type has nine occurrences, using various cardinal points to align the profiles.

Figure 493 — Beam occurrences

 

 
standard_case_element_beam-2.png 2,6 KB

The beam 'A-9' in Figure 494 is an occurrence of the 'IPE220' type having an I-Shape profile, placed along an axis using the upper-right cardinal point.

The cardinal point of the beam 'A-9' is set to the upper-right, indicating that the 'Body' representation should be generated with the upper-right of the profile aligned along the curve of the 'Axis representation.

Figure 494 — Beam profile and cardinal point usage

 

 

standard_case_element_beam-3.png 18,1 KB

The 'IPE220' beam type in Figure 495 is represented by IfcBeamType. As a parametric definition, this beam type does not have any geometric representation, rather it has a material profile set association indicating a cross-section which may be applied to paths defined at occurrences.

Figure 495 — Beam type graph

 

 
standard_case_element_beam-4.png 21,2 KB

Each beam occurrence as in Figure 496 is represented by IfcBeamStandardCase. The IfcMaterialProfileSetUsage entity indicates the alignment of the material profile set according to cardinal point. The IfcMaterialProfileSet indicates a single material profile. The IfcMaterialProfile indicates an I-Shape cross-section of steel. The IfcIShapeProfileDef indicates shape parameters of the I-Shape profile. The IfcMaterial indicates the steel material, which could be further elaborated with structural properties, surface styles, and fill area styles.

Figure 496 — Beam occurrence graph