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GeoBIM development presentation on 3D geoinfo Berlin 2010

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Presentation of the GeoBIM development at 3D Geoinfo conference 2010 Berlin.

Presentation of the GeoBIM development at 3D Geoinfo conference 2010 Berlin.

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GeoBIM development presentation on 3D geoinfo Berlin 2010 GeoBIM development presentation on 3D geoinfo Berlin 2010 Presentation Transcript

  • Léon van Berlo & Ruben de Laat BIM and GIS: GeoBIM ADE for CityGML
  • Work of a BIM/IFC team:
  • Observation: Where BIM and GIS can learn from each other
  • Comparing GIS and BIM  (City)GML and IFC
    • BIM-world:
    • Intense 3D geometry (CSG, Brep, etc) using IFC
    • Highly detailed models (semantics)
    • Focus on file exchange
    • Focussing above surface objects
    • Typically for modelling new buildings
    • Geo-world:
    • Focus on server based (central / webservices)
    • ‘ starting’ 3D (CityGML)
    • Focussing on areas (x,y)
    • Typically for modelling existing data
  • Previous work on IFC and CityGML interoperability
  • Differing Modeling Paradigms V olumetric, parametric primitives representing the structural components of buildings BIM (e.g., IFC) Constructive Solid Geometry Accumulation of observable surfaces of topographic features 3D GIS (e.g., CityGML) Boundary Representation (C) slide from: Thomas H. Kolbe - joint work with Claus Nagel & Alexandra Stadler
  • (C) slide from: Karl-Heinz Häfele - KIT
  • Past work
    • Mostly focussed on conversion of geometry
    • Mostly focussed on down-grading IFC to lower LOD’s CityGML
    • Interest for the rich (3D) semantics of IFC; but mostly as input to create city-models
    • Our challenge:
    • Extending CityGML with the rich semantics of IFC
    • (and getting IFC data on a central server)
  • WHY? (use cases for a GeoBIM-extension)
  • Why we want to do this?!
    • A lot of possibilities: Energy assessment; Space management; Structural analysis; Piping and wiring; Foundations; Tunnels; Sewers; OWS-4; etcetera.…
    • Read the paper for the official statement… but in reality we just thought it would be cool!
      • Or in a nice word: possibility push
  • The development of the GeoBIM-extension
  • The IFC classes to squeeze in the ADE:
    • IfcAnnotation
    • IfcBeam
    • IfcBuilding
    • IfcBuildingElementComponent
    • IfcBuildingElementPart
    • IfcBuildingElementProxy
    • IfcBuildingStorey
    • IfcChamferEdgeFeature
    • IfcColumn
    • IfcCovering
    • IfcCurtainWall
    • IfcDiscreteAccessory
    • IfcDistributionChamberElement
    • IfcDistributionControlElement
    • IfcDistributionElement
    • IfcDistributionFlowElement
    • IfcDistributionPort
    • IfcElectricalElement
    • IfcElectricDistributionPoint
    • IfcElementAssembly
    • IfcEnergyConversionDevice
    • IfcEquipmentElement
    • IfcFastener
    • IfcFooting
    • IfcGrid
    • IfcMechanicalFastener
    • IfcMember
    • IfcOpeningElement
    • IfcPile
    • IfcPlate
    • IfcProjectionElement
    • IfcProxy
    • IfcRailing
    • IfcRamp
    • IfcRampFlight
    • IfcReinforcingBar
    • IfcReinforcingMesh
    • IfcRoof
    • IfcRoundedEdgeFeature
    • IfcSite
    • IfcSlab
    • IfcSpace
    • IfcStair
    • IfcStairFlight
    • IfcStructuralCurveConnection
    • IfcStructuralCurveMember
    • IfcStructuralCurveMemberVarying
    • IfcStructuralLinearAction
    • IfcStructuralLinearActionVarying
    • IfcStructuralPlanarAction
    • IfcStructuralPlanarActionVarying
    • IfcStructuralPointAction
    • IfcStructuralPointConnection
    • IfcStructuralPointReaction
    • IfcStructuralSurfaceConnection
    • IfcStructuralSurfaceMember
    • IfcStructuralSurfaceMemberVarying
    • IfcTransportElement
    • IfcVirtualElement
    • IfcFurnishingElement
    • IfcWall
    • IfcWallStandardCase
    • IfcWindow
  • The GeoBIM (IFC) ADE
    • Extending Room, Window, Door, Opening, Buildingfurniture, BuildingInstallation, IntBuildingInstallation, Building and BuildingPart with extra (IFC)-properties.
    • Extending “_AbstractBuilding” with extra properties
    • Extending “_AbstractBuilding” with extra classes (and prop.)
    • Focus on adding details (in stead of downscoping)
    • Thought of adding a LOD5 (didn’t do it because of viewer comp.)
  • The schema
  • Prototype implementation of the GeoBIM-extension
  •  
  • Prototype testing
  •  
  •  
  •  
  • Discussion & conclusion
  • Issues
    • Still not solved the geometry issues
    • Not displaying ADE geometry in LandExplorer (?!)
    • File size issues (detailed geometry in XML just doesn’t work out)
    • No network structure in CityGML (like piping)  next version
    • Lot of different ways to link objects in IFC (no hierarchy)
    • CityGML4j not supporting everything we want (and shouldn’t because this was never the intention…)
    • A long way to go for the AEC industry uses central servers....
  • Future work and ambitions
  • Future ambitions
    • Keep extending the ADE:
      • Get a ‘solid’ for a set of wallsurfaces into CityGML
      • Get materialinfo about wallsurfaces into CityGML
      • Solve geometry issues (IFC 2x4)
      • … ..
    • Or maybe even:
      • Link to AR applications
      • Progress on the UBER-viewer
  • More info:
    • http://www.geobim.org
    • http://www.bimserver.org
    • http://www.tno.nl/bim/
    • Try for yourself! (but charge yourself for a challenge)
    • [email_address]
    • twitter: @berlotti
    • skype: berlotti