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Working with Open BIM standards to source data for a 3D Cadastre
Jennifer Oldfield
j.oldfield@gobar.nl
BIM FILE GIS OBJECT IFC LADM
• Based on Master of Science Geographic Information Management Applications (GIMA) thesis
• Supervised by Professor P.J.M van Oosterom TU Delft (GIS) and Professor Jakob Beetz RWTH Aachen University (BIM)
30/11/2017 Gobar Consulting Group
Published in the ISPRS’s International Journal of Geographic Information
30/11/2017 Gobar Consulting Group
Contents
•Context
•Methodology
•Process Model
•Model View Definition
•Use Cases
30/11/2017 Gobar Consulting Group
BIM FILE GIS OBJECT IFC LADM
National Context International Scope
Kadastrale Kaart Land Administration Domain Model (LADM) ISO19152
Opstalrecht & erfdienstbaarheid
Easements and Right of Superficies
Dutch open BIM standards: Informatieleveringsspecificatie (ILS), COINS & VISI
bSDD open Standaard: Information Delivery Manual(IDM) ISO 29481
NL Open BIM standard: Industry Foundation Classes (IFC)
bSDD open Standaard: IFC ISO 16739
Basisregistratie Grootschalige Topografie (BGT)
National Topographic Maps worldwide eg Ordnance Survey Britain
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Standardised BIM Methodology…
buildingSmart.org
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…which overlaps with GIS Methodology
•Validation
•Mapping
•Extraction function
•Topological boundary representation objects
•Use cases
•Legacy systems
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Information Delivery
Manual (IDM)
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Information Delivery
Manual (IDM)
Mapping between the IFC and LADM:
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Grouping spatial units
Mapping between the IFC and LADM:
Geometry
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Mapping between the IFC and LADM:
Using properties to provide a complex 3D ID
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Use Case 1: 2D Parcels in 3D
Legal spaces are different to physical spaces
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Use Case 1: 2D parcels in a 3D database
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Code Snippet: 2D Footprint
• #100=IFCCARTESIANPOINT((0.,0.)); #101=IFCCARTESIANPOINT((100.,0.)); #102=IFCCARTESIANPOINT((120.,300.)); #103=IFCCARTESIANPOINT((-20.,300.)); #104=IFCPOLYLINE((#100,#101,#102,#103,#100)); #105=IFCSHAPEREPRESENTATION(#3,'FootPrint','Curve2D',(#104)); #106=IFCPRODUCTDEFINITIONSHAPE($,$,(#105)); #107=IFCSPACE('1F93ymWGCHvxyww5AXPh_y',#1,'Room 1',$,$,#2,#106,$, .ELEMENT.,.NOTDEFINED.,$);
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Use Case 2: Complex multi-level use rights
• Built on pile foundations above water belonging to the municipality
• Open and semi open areas – outdoor terrace and slatted- roof dining area
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Image and Ifc Data courtesy of UK NBS
Use Case 2: the Lakeside Restaurant
• 41 pile foundations registered
• Difficult to visualise the building
• Updating and transferring the deed is a complicated process.
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Use Case 2: Lakeside Restaurant
Original IFC data set courtesty of National Building Specification (NBS) UK
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Hoofdkantoor
Nedeland
Gobar adviseurs BV
Heereweg 345
2161 CA Lisse
Nederland
E-Mail: info@gobar.nl
Telefoon: +31 (0)252 422985
Vestiging
Duitsland
Gobar adviseurs BV
Königsallee 92a 4+5 Etage
40212 Düsseldorf
Deutschland
E-Mail: info@gobar.nl
Telefoon: +49 (0)211 54 03 98 26
30/11/2017 Gobar Consulting Group
Evaluation: IDM Workflow
Delft Station Improved workflow • Significant decrease in registration
time • Conflict prevention: design could
be adjusted if necessary • Customised topological legal space
files for inclusion in a geo database • Communicated in the lingua franca
of the BIM world • Provides legal spaces for
topographic map and the cadastral one
• First 3D cadastre registration in the Netherlands
• Supplemented the kadastrale kaart
• Generated from existing (.ifc) files
Methodology
30/11/2017 Gobar Consulting Group
Where it began: GIS Methodology
Analyse
• Study other conversion functions
• Select Use Cases
Design
• Map BIM to LADM
• Create Data base Schema
Implement
• the mapped data and the conversion and validation function in a prototype environment
• Test using use cases
Evaluate
• Compare information model and conversion and validation function
• Repeat and improve
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Building the Model
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MODEL Requirements
Achieved
Bounded closed topological volume Topological volumes allow the legal
spaces to be connected up together
without overlap and the creation of an
overview
3D complex ID Legal space related to one or more
ground parcels with separate unique
indices to connect it up with different
rights
Different volumes Incorporates traditional parcel columns
in addition to volume parcels
Data checked for validity Geometrically and topologically correct
(no non manifold objects, closed
volumes) and no overlap but not for
how accurately it represents the
building – this would be left to the
owners as in the current system
Geometry - Polyhedron and 3D
representations open at the top and/or
bottom
This is how the volumes would be
stored in a database
Still to achieve
Web Server based This would allow queries to be made
from a variety of sources including the
organisation itself and individuals
Location information (co ordinates) Legal spaces positioned both by local
co ordinates and the national height
datum system on a map rather than
referenced to physical markers as in the
current Dutch system.
Building Smart Model View Definition (MVD)
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BIM GIS
How do you fit 3 elephants in a Volkswagen Beetle?
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Use Case 1: 2D parcels in a 3D database
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Explanation of the Dutch Kadaster's Map of Legal Spaces
Explanation in Dutch Explanation in English
1 Kadastrale gemeente Sectie Perceel
the municipality the spatial unit is registered in (Ambt-Doetinchem) and its unique number (711) and section (P)
2 Perceelnummer Unique number repeated (711) Huisnummer House number in red (25) 3 Vastgestelde kadastrale grens Spatial unit boundary which has been
measured by the Kadaster and is thus ‘fixed’ (Henssen 1996).
4 Voorlopige kadastrale grens Spatial unit boundary which has been drawn on the map by an intermediary and which still needs to be measured and ‘fixed’.
5 Administratieve kadastrale grens Spatial unit boundary which has been drawn on the map by the Kadaster but which still needs to be measured.
Bebouwing Buildings themselves (outlined in red and with red house numbers).
Overige topografie Other topographical features (outlined with a narrower black line than the fixed boundaries (3)).
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Use Case 2: Tapered building
• Building larger than its footprint
• CityGML LOD 2 volume ≠ automatically generated from aerial photo
• .ifc format • Validation
(closed volume) completed by software
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Scenario 2: Multi level use rights
Building (Malietoren) above the Utrechtsebaan (A12) The Hague source:www.wegenforum.
Nemo, Amsterdam and the Evoluon, Eindhoven
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Land Administration Domain Model (LADM)
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