<?xml version="1.0"?>
<PropertySetDef xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" ifdguid="7f403d00d1f311e1800000215ad4efdf" templatetype="PSET_PERFORMANCEDRIVEN" xsi:noNamespaceSchemaLocation="http://buildingSMART-tech.org/xml/psd/PSD_IFC4.xsd">
  <IfcVersion version="IFC4" />
  <Name>Pset_PipeSegmentPHistory</Name>
  <Definition>Pipe segment performance history common attributes.</Definition>
  <Applicability />
  <ApplicableClasses>
    <ClassName>IfcPipeSegment</ClassName>
  </ApplicableClasses>
  <ApplicableTypeValue>IfcPipeSegment</ApplicableTypeValue>
  <PropertyDefs>
    <PropertyDef ifdguid="849d8780d1f311e1800000215ad4efdf">
      <Name>LeakageCurve</Name>
      <Definition>Leakage per unit length curve versus working pressure.</Definition>
      <PropertyType>
        <TypePropertyReferenceValue reftype="IfcTimeSeries" />
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Leakage Curve</NameAlias>
        <NameAlias lang="ja-JP">漏洩曲線</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
        <DefinitionAlias lang="ja-JP">配管圧力に対する単位あたり流出量曲線</DefinitionAlias>
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="87987800d1f311e1800000215ad4efdf">
      <Name>FluidFlowLeakage</Name>
      <Definition>Volumetric leakage flow rate.</Definition>
      <PropertyType>
        <TypePropertyReferenceValue reftype="IfcTimeSeries" />
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Fluid Flow Leakage</NameAlias>
        <NameAlias lang="ja-JP">流体漏洩量</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
        <DefinitionAlias lang="ja-JP">漏洩量</DefinitionAlias>
      </DefinitionAliases>
    </PropertyDef>
  </PropertyDefs>
  <PsetDefinitionAliases>
    <PsetDefinitionAlias lang="en" />
  </PsetDefinitionAliases>
</PropertySetDef>