IFC 4.3.0.1 (IFC4X3) development

6.2.4.20 Pset_DistributionSystemTypeVentilation

6.2.4.20.1 Semantic definition

This property set is used to define the general characteristics of the duct design parameters within a system. HISTORY: New property set in IFC Release 2.0. Renamed from Pset_DuctDesignCriteria in IFC4.

6.2.4.20.2 Applicable entities

6.2.4.20.3 Properties

Name Property Type Data Type Description
DesignName IfcPropertySingleValue IfcLabel

A name for the design values.

DuctSizingMethod IfcPropertyEnumeratedValue PEnum_DuctSizingMethod

Enumeration that identifies the methodology to be used to size system components.

PressureClass IfcPropertySingleValue IfcPressureMeasure

Nominal pressure rating of the object.

Nominal pressure rating of the system components.

LeakageClass IfcPropertySingleValue IfcPressureMeasure

Nominal leakage rating for the system components.

FrictionLoss IfcPropertySingleValue IfcReal

The pressure loss due to friction per unit length. (Data type = PressureMeasure/LengthMeasure)

ScrapFactor IfcPropertySingleValue IfcReal

Sheet metal scrap factor.

DuctSealant IfcPropertyReferenceValue IfcMaterialDefinition

Type of sealant used on the duct and fittings.

MaximumVelocity IfcPropertySingleValue IfcLinearVelocityMeasure

The maximum design velocity of the air in the duct or fitting.

AspectRatio IfcPropertySingleValue IfcReal

The default aspect ratio.

MinimumHeight IfcPropertySingleValue IfcPositiveLengthMeasure

The minimum duct height for rectangular, oval or round duct.

MinimumWidth IfcPropertySingleValue IfcPositiveLengthMeasure

The minimum duct width for oval or rectangular duct.

Table 6.2.4.20.A

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6.2.4.20.4 Changelog

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