An IfcPositiveRatioMeasure is a ratio measure that is greater than zero.

Type: IfcRatioMeasure

NOTE  Type adapted from positive_ratio_measure defined in ISO 10303-41.
HISTORY  New type in IFC1.5.1.

XSD Specification:

 <xs:simpleType name="IfcPositiveRatioMeasure">
  <xs:restriction base="ifc:IfcRatioMeasure"/>
 <xs:element name="IfcPositiveRatioMeasure-wrapper" nillable="true">
    <xs:extension base="ifc:IfcPositiveRatioMeasure">
     <xs:attributeGroup ref="ifc:instanceAttributes"/>

EXPRESS Specification:

TYPE IfcPositiveRatioMeasure = IfcRatioMeasure;
WR1 : SELF > 0.

Link to EXPRESS-G diagram EXPRESS-G diagram

Formal Propositions:

WR1 : A positive measure shall be greater than zero.

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