<?xml version="1.0"?>
<PropertySetDef xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" ifdguid="d7197c80d1d011e1800000215ad4efdf" templatetype="PSET_TYPEDRIVENOVERRIDE" xsi:noNamespaceSchemaLocation="http://buildingSMART-tech.org/xml/psd/PSD_IFC4.xsd">
  <IfcVersion version="IFC4" />
  <Name>Pset_DamperTypeCommon</Name>
  <Definition>Damper type common attributes.</Definition>
  <Applicability />
  <ApplicableClasses>
    <ClassName>IfcDamper</ClassName>
  </ApplicableClasses>
  <ApplicableTypeValue>IfcDamper</ApplicableTypeValue>
  <PropertyDefs>
    <PropertyDef ifdguid="dc76c700d1d011e1800000215ad4efdf">
      <Name>Reference</Name>
      <Definition>Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcIdentifier" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Reference</NameAlias>
        <NameAlias lang="ja-JP">参照記号</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
        <DefinitionAlias lang="ja-JP">このプロジェクトにおける参照記号(例：A-1)。分類コードではなく内部で使用されるプロジェクトタイプとして使用されるもの。</DefinitionAlias>
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="e1d41180d1d011e1800000215ad4efdf">
      <Name>Status</Name>
      <Definition>Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as "New" - element designed as new addition, "Existing" - element exists and remains, "Demolish" - element existed but is to be demolished,  "Temporary" - element will exists only temporary (like a temporary support structure).</Definition>
      <PropertyType>
        <TypePropertyEnumeratedValue>
          <EnumList name="PEnum_ElementStatus">
            <EnumItem>NEW</EnumItem>
            <EnumItem>EXISTING</EnumItem>
            <EnumItem>DEMOLISH</EnumItem>
            <EnumItem>TEMPORARY</EnumItem>
            <EnumItem>OTHER</EnumItem>
            <EnumItem>NOTKNOWN</EnumItem>
            <EnumItem>UNSET</EnumItem>
          </EnumList>
          <ConstantList>
            <ConstantDef>
              <Name>NEW</Name>
              <Definition>element designed as new addition</Definition>
              <NameAliases>
                <NameAlias lang="en">New</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>EXISTING</Name>
              <Definition>element exists and is to remain</Definition>
              <NameAliases>
                <NameAlias lang="en">Existing</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>DEMOLISH</Name>
              <Definition>element exists but is to be demolished</Definition>
              <NameAliases>
                <NameAlias lang="en">Demolish</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>TEMPORARY</Name>
              <Definition>element will exist only temporarily (such as a temporary support structure)</Definition>
              <NameAliases>
                <NameAlias lang="en">Temporary</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>OTHER</Name>
              <NameAliases>
                <NameAlias lang="en">(other)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is not listed.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>NOTKNOWN</Name>
              <NameAliases>
                <NameAlias lang="en">(unknown)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is unknown.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>UNSET</Name>
              <NameAliases>
                <NameAlias lang="en">(unset)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value has not been specified.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
          </ConstantList>
        </TypePropertyEnumeratedValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Status</NameAlias>
        <NameAlias lang="ja-JP">状態</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
        <DefinitionAlias lang="ja-JP">要素（主にリノベーションまたは改修プロジェクトにおいて）の状態。 状態は、「新規(New)」－新しく追加される要素。「既存」－要素は存在し、かつ残りもの。「破壊」－要素は存在したが、廃棄されるもの。「一時的」－一時的に存在する要素（一時的にサポートしている構造のようなもの）。</DefinitionAlias>
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="f0222d80d1d011e1800000215ad4efdf">
      <Name>Operation</Name>
      <Definition>The operational mechanism for the damper operation.</Definition>
      <PropertyType>
        <TypePropertyEnumeratedValue>
          <EnumList name="PEnum_DamperOperation">
            <EnumItem>AUTOMATIC</EnumItem>
            <EnumItem>MANUAL</EnumItem>
            <EnumItem>OTHER</EnumItem>
            <EnumItem>NOTKNOWN</EnumItem>
            <EnumItem>UNSET</EnumItem>
          </EnumList>
          <ConstantList>
            <ConstantDef>
              <Name>AUTOMATIC</Name>
              <NameAliases>
                <NameAlias lang="en">Automatic</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>MANUAL</Name>
              <NameAliases>
                <NameAlias lang="en">Manual</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>OTHER</Name>
              <NameAliases>
                <NameAlias lang="en">(other)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is not listed.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>NOTKNOWN</Name>
              <NameAliases>
                <NameAlias lang="en">(unknown)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is unknown.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>UNSET</Name>
              <NameAliases>
                <NameAlias lang="en">(unset)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value has not been specified.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
          </ConstantList>
        </TypePropertyEnumeratedValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Operation</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="fca68600d1d011e1800000215ad4efdf">
      <Name>Orientation</Name>
      <Definition>The intended orientation for the damper as specified by the manufacturer.</Definition>
      <PropertyType>
        <TypePropertyEnumeratedValue>
          <EnumList name="PEnum_DamperOrientation">
            <EnumItem>VERTICAL</EnumItem>
            <EnumItem>HORIZONTAL</EnumItem>
            <EnumItem>VERTICALORHORIZONTAL</EnumItem>
            <EnumItem>OTHER</EnumItem>
            <EnumItem>NOTKNOWN</EnumItem>
            <EnumItem>UNSET</EnumItem>
          </EnumList>
          <ConstantList>
            <ConstantDef>
              <Name>VERTICAL</Name>
              <NameAliases>
                <NameAlias lang="en">Vertical</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>HORIZONTAL</Name>
              <NameAliases>
                <NameAlias lang="en">Horizontal</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>VERTICALORHORIZONTAL</Name>
              <NameAliases>
                <NameAlias lang="en">Vertical or Horizontal</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>OTHER</Name>
              <NameAliases>
                <NameAlias lang="en">(other)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is not listed.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>NOTKNOWN</Name>
              <NameAliases>
                <NameAlias lang="en">(unknown)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is unknown.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>UNSET</Name>
              <NameAliases>
                <NameAlias lang="en">(unset)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value has not been specified.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
          </ConstantList>
        </TypePropertyEnumeratedValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Orientation</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="0def9280d1d111e1800000215ad4efdf">
      <Name>BladeThickness</Name>
      <Definition>The thickness of the damper blade.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPositiveLengthMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Blade Thickness</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="16e06400d1d111e1800000215ad4efdf">
      <Name>BladeAction</Name>
      <Definition>Blade action.</Definition>
      <PropertyType>
        <TypePropertyEnumeratedValue>
          <EnumList name="PEnum_DamperBladeAction">
            <EnumItem>FOLDINGCURTAIN</EnumItem>
            <EnumItem>PARALLEL</EnumItem>
            <EnumItem>OPPOSED</EnumItem>
            <EnumItem>SINGLE</EnumItem>
            <EnumItem>OTHER</EnumItem>
            <EnumItem>NOTKNOWN</EnumItem>
            <EnumItem>UNSET</EnumItem>
          </EnumList>
          <ConstantList>
            <ConstantDef>
              <Name>FOLDINGCURTAIN</Name>
              <NameAliases>
                <NameAlias lang="en">Folding Curtain</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>PARALLEL</Name>
              <NameAliases>
                <NameAlias lang="en">Parallel</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>OPPOSED</Name>
              <NameAliases>
                <NameAlias lang="en">Opposed</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>SINGLE</Name>
              <NameAliases>
                <NameAlias lang="en">Single</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>OTHER</Name>
              <NameAliases>
                <NameAlias lang="en">(other)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is not listed.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>NOTKNOWN</Name>
              <NameAliases>
                <NameAlias lang="en">(unknown)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is unknown.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>UNSET</Name>
              <NameAliases>
                <NameAlias lang="en">(unset)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value has not been specified.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
          </ConstantList>
        </TypePropertyEnumeratedValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Blade Action</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="252e8000d1d111e1800000215ad4efdf">
      <Name>BladeShape</Name>
      <Definition>Blade shape. Flat means triple V-groove.</Definition>
      <PropertyType>
        <TypePropertyEnumeratedValue>
          <EnumList name="PEnum_DamperBladeShape">
            <EnumItem>FLAT</EnumItem>
            <EnumItem>FABRICATEDAIRFOIL</EnumItem>
            <EnumItem>EXTRUDEDAIRFOIL</EnumItem>
            <EnumItem>OTHER</EnumItem>
            <EnumItem>NOTKNOWN</EnumItem>
            <EnumItem>UNSET</EnumItem>
          </EnumList>
          <ConstantList>
            <ConstantDef>
              <Name>FLAT</Name>
              <NameAliases>
                <NameAlias lang="en">Flat</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>FABRICATEDAIRFOIL</Name>
              <NameAliases>
                <NameAlias lang="en">Fabricated Airfoil</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>EXTRUDEDAIRFOIL</Name>
              <NameAliases>
                <NameAlias lang="en">Extruded Airfoil</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>OTHER</Name>
              <NameAliases>
                <NameAlias lang="en">(other)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is not listed.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>NOTKNOWN</Name>
              <NameAliases>
                <NameAlias lang="en">(unknown)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is unknown.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>UNSET</Name>
              <NameAliases>
                <NameAlias lang="en">(unset)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value has not been specified.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
          </ConstantList>
        </TypePropertyEnumeratedValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Blade Shape</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="31b2d880d1d111e1800000215ad4efdf">
      <Name>BladeEdge</Name>
      <Definition>Blade edge.</Definition>
      <PropertyType>
        <TypePropertyEnumeratedValue>
          <EnumList name="PEnum_DamperBladeEdge">
            <EnumItem>CRIMPED</EnumItem>
            <EnumItem>UNCRIMPED</EnumItem>
            <EnumItem>OTHER</EnumItem>
            <EnumItem>NOTKNOWN</EnumItem>
            <EnumItem>UNSET</EnumItem>
          </EnumList>
          <ConstantList>
            <ConstantDef>
              <Name>CRIMPED</Name>
              <NameAliases>
                <NameAlias lang="en">Crimped</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>UNCRIMPED</Name>
              <NameAliases>
                <NameAlias lang="en">Uncrimped</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en" />
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>OTHER</Name>
              <NameAliases>
                <NameAlias lang="en">(other)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is not listed.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>NOTKNOWN</Name>
              <NameAliases>
                <NameAlias lang="en">(unknown)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is unknown.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>UNSET</Name>
              <NameAliases>
                <NameAlias lang="en">(unset)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value has not been specified.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
          </ConstantList>
        </TypePropertyEnumeratedValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Blade Edge</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="3d060400d1d111e1800000215ad4efdf">
      <Name>NumberofBlades</Name>
      <Definition>Number of blades.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcInteger" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Numberof Blades</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="42634e80d1d111e1800000215ad4efdf">
      <Name>FaceArea</Name>
      <Definition>Face area open to the airstream.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcAreaMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Face Area</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="47c09900d1d111e1800000215ad4efdf">
      <Name>MaximumAirFlowRate</Name>
      <Definition>Maximum allowable air flow rate.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcVolumetricFlowRateMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Maximum Air Flow Rate</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="4c854d00d1d111e1800000215ad4efdf">
      <Name>TemperatureRange</Name>
      <Definition>Temperature range.</Definition>
      <PropertyType>
        <TypePropertyBoundedValue>
          <DataType type="IfcThermodynamicTemperatureMeasure" />
        </TypePropertyBoundedValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Temperature Range</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="53ac5b00d1d111e1800000215ad4efdf">
      <Name>MaximumWorkingPressure</Name>
      <Definition>Maximum working pressure.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPressureMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Maximum Working Pressure</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="5909a580d1d111e1800000215ad4efdf">
      <Name>TemperatureRating</Name>
      <Definition>Temperature rating.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcThermodynamicTemperatureMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Temperature Rating</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="5e66f000d1d111e1800000215ad4efdf">
      <Name>NominalAirFlowRate</Name>
      <Definition>Nominal air flow rate.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcVolumetricFlowRateMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Nominal Air Flow Rate</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="632ba400d1d111e1800000215ad4efdf">
      <Name>OpenPressureDrop</Name>
      <Definition>Total pressure drop across damper.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPressureMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Open Pressure Drop</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="67f05800d1d111e1800000215ad4efdf">
      <Name>LeakageFullyClosed</Name>
      <Definition>Leakage when fully closed.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcVolumetricFlowRateMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Leakage Fully Closed</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="6cb50c00d1d111e1800000215ad4efdf">
      <Name>LossCoefficentCurve</Name>
      <Definition>Loss coefficient – blade position angle curve; ratio of pressure drop to velocity pressure versus blade angle; C = f (blade angle position).</Definition>
      <PropertyType>
        <TypePropertyTableValue>
          <Expression />
          <DefiningValue>
            <DataType type="IfcPositivePlaneAngleMeasure" />
          </DefiningValue>
          <DefinedValue>
            <DataType type="IfcReal" />
          </DefinedValue>
        </TypePropertyTableValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Loss Coefficent Curve</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="750d4700d1d111e1800000215ad4efdf">
      <Name>LeakageCurve</Name>
      <Definition>Leakage versus pressure drop; Leakage = f (pressure).</Definition>
      <PropertyType>
        <TypePropertyTableValue>
          <Expression />
          <DefiningValue>
            <DataType type="IfcVolumetricFlowRateMeasure" />
          </DefiningValue>
          <DefinedValue>
            <DataType type="IfcPressureMeasure" />
          </DefinedValue>
        </TypePropertyTableValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Leakage Curve</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="7d658200d1d111e1800000215ad4efdf">
      <Name>RegeneratedSoundCurve</Name>
      <Definition>Regenerated sound versus air flow rate.</Definition>
      <PropertyType>
        <TypePropertyTableValue>
          <Expression />
          <DefiningValue>
            <DataType type="IfcVolumetricFlowRateMeasure" />
          </DefiningValue>
          <DefinedValue>
            <DataType type="IfcSoundPressureMeasure" />
          </DefinedValue>
        </TypePropertyTableValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Regenerated Sound Curve</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="85252680d1d111e1800000215ad4efdf">
      <Name>FrameType</Name>
      <Definition>The type of frame used by the damper (e.g., Standard, Single Flange, Single Reversed Flange, Double Flange, etc.).</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcLabel" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Frame Type</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="8b1b0780d1d111e1800000215ad4efdf">
      <Name>FrameDepth</Name>
      <Definition>The length (or depth) of the damper frame.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPositiveLengthMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Frame Depth</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="93734280d1d111e1800000215ad4efdf">
      <Name>FrameThickness</Name>
      <Definition>The thickness of the damper frame material.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPositiveLengthMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Frame Thickness</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="98d08d00d1d111e1800000215ad4efdf">
      <Name>CloseOffRating</Name>
      <Definition>Close off rating.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPressureMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Close Off Rating</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
  </PropertyDefs>
  <PsetDefinitionAliases>
    <PsetDefinitionAlias lang="en" />
    <PsetDefinitionAlias lang="ja-JP">ダンパー型の共通プロパティ属性設定。</PsetDefinitionAlias>
  </PsetDefinitionAliases>
</PropertySetDef>