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OpenBuildings | AECOsim | Speedikon Wiki IFC - Certain Elements Do Not Appear in COBie
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    IFC - Certain Elements Do Not Appear in COBie

    Product(s): OpenBuildings Designer (and AECOsim Building Designer)
    Version(s): CONNECT Edition and V8i
    Area: Import/Export
    Subarea: IFC

    Problem Description

    Why don't all of the elements in a design model export to IFC COBie

    Steps to Resolve

    COBie is a subset of IFC, i.e., only selected objects are extracted from the model and are included in the COBie spread sheet. The objects that are extracted are those defined by COBie as being Physical assests that will require maintenance or tracking, e.g, chairs, light fixtures, etc.

    Walls, columns and slabs are not generally included in the export as they are deemed not to require maintenance.

    As the (FMH) Facilities Management Handover/COBie Model View Definition (MVD) is focused on ‘manageable assets’, elements such as walls, columns, beams, slabs, stairs, etc. are excluded and not exported. The excluded IFC classes are defined in:

    …/Dataset_<region>/setting/IFC_COBieFilter.set.

    If you comment out classes, they will be exported, but that may violate the MVD. To comment add double-slash (//) in the front of the line. Do not forget to enable type object classes when you enable entity class.

    Example file content from Dataset_ISO19650:

    /*--------------------------------------------------------------------------------------+
    |
    | IFC EXPORT FM Handover / COBie filter
    |
    |---------------------------------------------------------------------------------------
    | $RCSfile: IFC_COBieFilter.set,v $
    | $Revision: 1.2 $
    |
    | $Copyright: (c) 2021 Bentley Systems, Incorporated. All rights reserved. $
    |
    +--------------------------------------------------------------------------------------*/

    VERSION 2.2
    FILE_DESCRIPTION "ViewDefinition [FMHandOverView]";

    EXCLUDE_DOMAIN
    //OBJECT IDM IGNORED ENTITY LISTS
    //Source: COBie TOOLKIT USER GUIDE
    //Release: Beta 1.3
    //Release date: April 18, 2013
    //
    IfcAnnotation
    IfcBeam
    //IfcBeamStandardCase
    IfcBeamType
    IfcBuildingElementPart
    IfcBuildingElementProxy
    IfcBuildingElementProxyType
    //IfcCableCarrierSegment
    IfcCableCarrierSegmentType
    //IfcCableSegment
    IfcCableSegmentType
    IfcColumn
    //IfcColumnStandardCase
    IfcColumnType
    IfcCovering
    IfcCoveringType
    IfcCurtainWall
    IfcCurtainWallType
    IfcDistributionPort
    IfcDuctFittingType
    //IfcDuctSegment
    IfcDuctSegmentType
    IfcElementAssembly
    IfcFastener
    IfcFastenerType
    IfcFeatureElement
    IfcFeatureElementAddition
    IfcFeatureElementSubtraction
    IfcFlowFitting
    IfcFlowFittingType
    IfcFlowSegment
    IfcFlowSegmentType
    IfcFooting
    IfcJunctionBoxType
    IfcMechanicalFastener
    IfcMember
    //IfcMemberStandardCase
    IfcMemberType
    IfcOpeningElement
    //IfcOpeningStandardCase
    IfcPile
    IfcPipeFittingType
    //IfcPipeSegment
    IfcPipeSegmentType
    IfcPlate
    //IfcPlateStandardCase
    IfcPlateType
    IfcProjectionElement
    IfcRailing
    IfcRailingType
    IfcRamp
    IfcRampFlight
    IfcRampFlightType
    //IfcRampType
    IfcReinforcingBar
    IfcReinforcingMesh
    IfcRoof
    IfcSlab
    //IfcSlabElementedCase
    //IfcSlabStandardCase
    IfcSlabType
    IfcSpaceType
    IfcStair
    IfcStairFlight
    IfcStairFlightType
    //IfcStairType
    IfcStructuralAction
    IfcStructuralActivity
    IfcStructuralConnection
    //IfcStructuralCurveAction
    IfcStructuralCurveConnection
    IfcStructuralCurveMember
    IfcStructuralCurveMemberVarying
    //IfcStructuralCurveReaction
    IfcStructuralItem
    IfcStructuralLinearAction
    IfcStructuralMember
    IfcStructuralPlanarAction
    IfcStructuralPointAction
    IfcStructuralPointConnection
    IfcStructuralPointReaction
    IfcStructuralReaction
    //IfcStructuralSurfaceAction
    IfcStructuralSurfaceConnection
    IfcStructuralSurfaceMember
    IfcStructuralSurfaceMemberVarying
    //IfcStructuralSurfaceReaction
    //IfcSurfaceFeature
    IfcVirtualElement
    //IfcVoidingFeature
    IfcWall
    //IfcWallElementedCase
    IfcWallStandardCase
    IfcWallType

    ALLOW_PROPERTY_SET
    Pset_*
    ePset_*
    COBie_*
    @AirHandling
    @AirDistribution
    @Door
    @Furniture
    @ObjectManufacturer
    @ObjectPostalAddress
    @Plumbing
    @Properties
    @Pumps
    @Space
    @Spaces
    @Specialty_Safety
    @VAV
    @Window
    BaseQuantities

    // Add further or remove property set names as required (without .xsd extension).
    // Use wildcards (*) as necessary, e.g.
    // Pset_* - export all property sets starting with 'Pset_' for all objects
    // Door - only export the 'Door' property set, but not ArchDoor, Door_PAZ, etc.
    // ObjectManufacturer FOR Casework - export the ObjectManufacturer property set only for Casework
    // *COBie* - export every property set that includes the string 'COBie'
    // @<property set> - export using the internal property set name, not the display name

    SYSTEMS
    "Properties/@SystemId"

    PREFERRED_CLASSIFICATION Uniclass
    // Enter the preferred classification system name

    ONLY_ONE_CLASSIFICATION

    • Architectural Design
    • OpenBuildings Designer
    • IFC export
    • COBIE
    • Share
    • History
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    • Cancel
    • Robert DiMauro Created by Robert DiMauro
    • When: Thu, Jul 10 2014 9:22 AM
    • Marc Thomas Last revision by Bentley Colleague Marc Thomas
    • When: Tue, Feb 15 2022 7:52 AM
    • Revisions: 14
    • Comments: 0
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