7.10.4.1 Pset_StructuralSurfaceMemberVaryingThickness

7.10.4.1.1 Semantic definition

Thickness parameters of a surface member (structural analysis item) with varying thickness, particularly with linearly varying thickness. The thickness is interpolated/ extrapolated from three points. The locations of these points are given either in local x,y coordinates of the surface member or in global X,Y,Z coordinates. Either way, these points are required to be located within the face or at the bounds of the face of the surface member, and they must not be located on a common line. Local and global coordinates shall not be mixed within the same property set instance.

7.10.4.1.2 Applicable entities

• IfcStructuralSurfaceMemberVarying

7.10.4.1.3 Properties

Name	Property Type	Data Type	Description
Thickness1	IfcPropertySingleValue	IfcPositiveLengthMeasure	First thickness parameter of a surface member with varying thickness
Location1Local	IfcPropertyListValue	IfcLengthMeasure	Local x,y coordinates of the point in which Thickness1 is given
Location1Global	IfcPropertyListValue	IfcLengthMeasure	Global X,Y,Z coordinates of the point in which Thickness1 is given
Thickness2	IfcPropertySingleValue	IfcPositiveLengthMeasure	Second thickness parameter of a surface member with varying thickness
Location2Local	IfcPropertyListValue	IfcLengthMeasure	Local x,y coordinates of the point in which Thickness2 is given
Location2Global	IfcPropertyListValue	IfcLengthMeasure	Global X,Y,Z coordinates of the point in which Thickness2 is given
Thickness3	IfcPropertySingleValue	IfcPositiveLengthMeasure	Third thickness parameter of a surface member with varying thickness
Location3Local	IfcPropertyListValue	IfcLengthMeasure	Local x,y coordinates of the point in which Thickness3 is given
Location3Global	IfcPropertyListValue	IfcLengthMeasure	Global X,Y,Z coordinates of the point in which Thickness3 is given