<?xml version="1.0" encoding="utf-8"?>
<PropertySetDef xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" ifdguid="eb7c91fea3484889bdfa65cc36c81917" templatetype="PSET_TYPEDRIVENOVERRIDE" xsi:noNamespaceSchemaLocation="http://buildingSMART-tech.org/xml/psd/PSD_IFC4.xsd" xmlns="http://buildingSMART-tech.org/xml/psd/PSD_IFC4.xsd">
  <IfcVersion version="IFC4X4" />
  <Name>Pset_Uncertainty</Name>
  <Definition>Property set capturing the geometric uncertainty regarding measurements including how the way that uncertainty was assessed.</Definition>
  <Applicability />
  <ApplicableClasses>
    <ClassName>IfcProduct</ClassName>
  </ApplicableClasses>
  <ApplicableTypeValue>IfcProduct</ApplicableTypeValue>
  <PropertyDefs>
    <PropertyDef ifdguid="da7247f30bb04cc29b54f11e644eaa76">
      <Name>UncertaintyBasis</Name>
      <Definition>Indication of the basis of the uncertainty</Definition>
      <PropertyType>
        <TypePropertyEnumeratedValue>
          <EnumList name="PEnum_UncertaintyBasis">
            <EnumItem>MEASUREMENT</EnumItem>
            <EnumItem>OBSERVATION</EnumItem>
            <EnumItem>ASSESSMENT</EnumItem>
            <EnumItem>INTERPRETATION</EnumItem>
            <EnumItem>ESTIMATE</EnumItem>
            <EnumItem>USERDEFINED</EnumItem>
            <EnumItem>NOTKNOWN</EnumItem>
            <EnumItem>NOTDEFINED</EnumItem>
          </EnumList>
          <ConstantList>
            <ConstantDef>
              <Name>MEASUREMENT</Name>
              <NameAliases />
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>OBSERVATION</Name>
              <NameAliases />
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>ASSESSMENT</Name>
              <NameAliases />
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>INTERPRETATION</Name>
              <NameAliases />
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>ESTIMATE</Name>
              <NameAliases />
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>USERDEFINED</Name>
              <NameAliases>
                <NameAlias lang="en">User Defined</NameAlias>
              </NameAliases>
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>NOTKNOWN</Name>
              <Definition>Value is unkown</Definition>
              <NameAliases>
                <NameAlias lang="en">(unknown)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is unknown.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>NOTDEFINED</Name>
              <NameAliases>
                <NameAlias lang="en">Notdefined</NameAlias>
              </NameAliases>
              <DefinitionAliases />
            </ConstantDef>
          </ConstantList>
        </TypePropertyEnumeratedValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
    <PropertyDef ifdguid="b5e86de9db65474aa95c1d94239bb1a8">
      <Name>UncertaintyDescription</Name>
      <Definition>General description of the uncertainty associated to the element or feature, its source and implications.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcText" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
    <PropertyDef ifdguid="5a6f226a4eab4587b31e62ee9049a094">
      <Name>HorizontalUncertainty</Name>
      <Definition>Indicative (95%-100%) range diameter associated to the vertical shape and position in X, if different to the linear uncertainty.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPositiveLengthMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
    <PropertyDef ifdguid="36d080c2497e4cef8e9e3e80be10ec19">
      <Name>LinearUncertainty</Name>
      <Definition>Indicative (95%-100%) range diameter associated to the overall shape and position in XYZ.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPositiveLengthMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
    <PropertyDef ifdguid="6f6a43f40a494f4ab2407385f1da22bc">
      <Name>OrthogonalUncertainty</Name>
      <Definition>Indicative (95%-100%) range diameter associated to the horizontal shape and position in Y, if different to the horizontal uncertainty.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPositiveLengthMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
    <PropertyDef ifdguid="f34c9a699a714d0e98a39e5503462bf6">
      <Name>VerticalUncertainty</Name>
      <Definition>Indicative (95%-100%) range diameter associated to the vertical shape and position in Z, if different to the linear uncertainty.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPositiveLengthMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
  </PropertyDefs>
  <PsetDefinitionAliases />
</PropertySetDef>