IFC 4.3.0.1 (IFC4X3) development

# 8.9.3.47 IfcPlane

## 8.9.3.47.1 Semantic definition

The planar surface is an unbounded surface in the direction of x and y. Bounded planar surfaces are defined by using a subtype of IfcBoundedSurface with BasisSurface being a plane.

The inherited attributes are interpreted as

## 8.9.3.47.4 Formal representation

ENTITY IfcPlane
SUBTYPE OF (IfcElementarySurface);
END_ENTITY;