<?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="d7197c80d1d011e1800000215ad4efdf" 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_DamperTypeCommon</Name>
  <Definition>Damper type common attributes.</Definition>
  <Applicability />
  <ApplicableClasses>
    <ClassName>IfcDamper</ClassName>
  </ApplicableClasses>
  <ApplicableTypeValue>IfcDamper</ApplicableTypeValue>
  <PropertyDefs>
    <PropertyDef ifdguid="00cda600d1c711e1800000215ad4efdf">
      <Name>Reference</Name>
      <Definition>Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as "construction type". It should be provided as an alternative to the name of the "object type", if the software does not support object types and no classification reference to a recognized classification system used.

&gt; IFC4.3.0.0 DEPRECATION&amp;nbsp;  The Reference property is deprecated and shall no longer be used, use attribute Name on the relating type instead.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcIdentifier" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Reference</NameAlias>
        <NameAlias lang="ja-JP">参照</NameAlias>
        <NameAlias lang="ko-KR">참조</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
        <DefinitionAlias lang="ja-JP">当該プロジェクトで定義する形式の参照ID（例：A-1)、承認された分類に存在しないときに使用される。</DefinitionAlias>
        <DefinitionAlias lang="ko-KR">해당 프로젝트에 정의된 형식의 참조 ID (예 : A-1) 승인된 분류에 존재하지 않을 때 사용된다.</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 />
            </ConstantDef>
            <ConstantDef>
              <Name>EXISTING</Name>
              <Definition>element exists and is to remain</Definition>
              <NameAliases>
                <NameAlias lang="en">Existing</NameAlias>
              </NameAliases>
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>DEMOLISH</Name>
              <Definition>element exists but is to be demolished</Definition>
              <NameAliases>
                <NameAlias lang="en">Demolish</NameAlias>
              </NameAliases>
              <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 />
            </ConstantDef>
            <ConstantDef>
              <Name>OTHER</Name>
              <Definition>required category not on scale</Definition>
              <NameAliases>
                <NameAlias lang="en">(other)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is not listed.</DefinitionAlias>
              </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>UNSET</Name>
              <Definition>Value has not been specified</Definition>
              <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 />
            </ConstantDef>
            <ConstantDef>
              <Name>MANUAL</Name>
              <NameAliases>
                <NameAlias lang="en">Manual</NameAlias>
              </NameAliases>
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>OTHER</Name>
              <Definition>required category not on scale</Definition>
              <NameAliases>
                <NameAlias lang="en">(other)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is not listed.</DefinitionAlias>
              </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>UNSET</Name>
              <Definition>Value has not been specified</Definition>
              <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 />
            </ConstantDef>
            <ConstantDef>
              <Name>HORIZONTAL</Name>
              <NameAliases>
                <NameAlias lang="en">Horizontal</NameAlias>
              </NameAliases>
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>VERTICALORHORIZONTAL</Name>
              <NameAliases>
                <NameAlias lang="en">Vertical or Horizontal</NameAlias>
              </NameAliases>
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>OTHER</Name>
              <Definition>required category not on scale</Definition>
              <NameAliases>
                <NameAlias lang="en">(other)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is not listed.</DefinitionAlias>
              </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>UNSET</Name>
              <Definition>Value has not been specified</Definition>
              <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 />
            </ConstantDef>
            <ConstantDef>
              <Name>PARALLEL</Name>
              <NameAliases>
                <NameAlias lang="en">Parallel</NameAlias>
              </NameAliases>
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>OPPOSED</Name>
              <NameAliases>
                <NameAlias lang="en">Opposed</NameAlias>
              </NameAliases>
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>SINGLE</Name>
              <NameAliases>
                <NameAlias lang="en">Single</NameAlias>
              </NameAliases>
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>OTHER</Name>
              <Definition>required category not on scale</Definition>
              <NameAliases>
                <NameAlias lang="en">(other)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is not listed.</DefinitionAlias>
              </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>UNSET</Name>
              <Definition>Value has not been specified</Definition>
              <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 />
            </ConstantDef>
            <ConstantDef>
              <Name>FABRICATEDAIRFOIL</Name>
              <NameAliases>
                <NameAlias lang="en">Fabricated Airfoil</NameAlias>
              </NameAliases>
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>EXTRUDEDAIRFOIL</Name>
              <NameAliases>
                <NameAlias lang="en">Extruded Airfoil</NameAlias>
              </NameAliases>
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>OTHER</Name>
              <Definition>required category not on scale</Definition>
              <NameAliases>
                <NameAlias lang="en">(other)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is not listed.</DefinitionAlias>
              </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>UNSET</Name>
              <Definition>Value has not been specified</Definition>
              <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 />
            </ConstantDef>
            <ConstantDef>
              <Name>UNCRIMPED</Name>
              <NameAliases>
                <NameAlias lang="en">Uncrimped</NameAlias>
              </NameAliases>
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>OTHER</Name>
              <Definition>required category not on scale</Definition>
              <NameAliases>
                <NameAlias lang="en">(other)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is not listed.</DefinitionAlias>
              </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>UNSET</Name>
              <Definition>Value has not been specified</Definition>
              <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>Allowable maximum and minimum temperature.</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 pressure that the object is manufactured to withstand.</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 frame.

For a damper, it is 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 frame.

For a damper, it is 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>