![]()  | Sound Power Level Measure | 
![]()  | Mesure de niveau de puissance acoustique | 
| Item | SPF | XML | Change | Description | IFC2x3 to IFC4 | 
|---|---|---|---|---|
| IfcSoundPowerLevelMeasure | ADDED | 
A sound power level measure is a measure of total radiated noise with units of decibels with a reference value of picowatts.
Type: REAL
HISTORY Renamed in IFC4 (was IfcSoundPowerMeasure).
 <xs:simpleType name="IfcSoundPowerLevelMeasure">
  <xs:restriction base="xs:double"/>
 </xs:simpleType>
 <xs:element name="IfcSoundPowerLevelMeasure-wrapper" nillable="true">
  <xs:complexType>
   <xs:simpleContent>
    <xs:extension base="ifc:IfcSoundPowerLevelMeasure">
     <xs:attributeGroup ref="ifc:instanceAttributes"/>
    </xs:extension>
   </xs:simpleContent>
  </xs:complexType>
 </xs:element>
TYPE IfcSoundPowerLevelMeasure = REAL;
END_TYPE;