 | Sound Pressure Level Measure |
 | Mesure de niveau de pression sonore |
| Item | SPF | XML | Change | Description | IFC2x3 to IFC4 |
|---|---|---|---|---|
| IfcSoundPressureLevelMeasure | ADDED |
A sound pressure level measure is a measure of the pressure fluctuations superimposed over the ambient pressure level with units of decibels with a reference value of micropascals.
Type: REAL
HISTORY Renamed in IFC4 (was IfcSoundPressureMeasure).
<xs:simpleType name="IfcSoundPressureLevelMeasure">
<xs:restriction base="xs:double"/>
</xs:simpleType>
TYPE IfcSoundPressureLevelMeasure = REAL;
END_TYPE;
References: IfcDerivedMeasureValue
EXPRESS-G diagram
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