Working with Open BIM standards to source data for a 3D Cadastre - - PowerPoint PPT Presentation

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

• f 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

30/11/2017 Gobar Consulting Group

Standardised BIM Methodology…

buildingSmart.org

30/11/2017 Gobar Consulting Group

…which overlaps with GIS Methodology

• Validation
• Mapping
• Extraction function
• Topological boundary representation objects
• Use cases
• Legacy systems

30/11/2017 Gobar Consulting Group

30/11/2017

Information Delivery Manual (IDM)

30/11/2017 Gobar Consulting Group

Information Delivery Manual (IDM)

Mapping between the IFC and LADM:

30/11/2017 Gobar Consulting Group

Grouping spatial units

Mapping between the IFC and LADM:

Geometry

30/11/2017 Gobar Consulting Group

Mapping between the IFC and LADM:

Using properties to provide a complex 3D ID

30/11/2017 Gobar Consulting Group

Use Case 1: 2D Parcels in 3D Legal spaces are different to physical spaces

30/11/2017 Gobar Consulting Group

Use Case 1: 2D parcels in a 3D database

30/11/2017 Gobar Consulting Group

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,$, .ELEMENT.,.NOTDEFINED.,$);

30/11/2017 Gobar Consulting Group

Use Case 2: Complex multi-level use rights

• Built on pile

foundations above water belonging to the municipality

• Open and semi
• pen areas –
• utdoor terrace

and slatted- roof dining area

30/11/2017 Gobar Consulting Group

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.

30/11/2017 Gobar Consulting Group

Use Case 2: Lakeside Restaurant

Original IFC data set courtesty of National Building Specification (NBS) UK

30/11/2017 Gobar Consulting Group

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
• f the BIM world
• Provides legal spaces for

topographic map and the cadastral

• ne
• 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

30/11/2017 Gobar Consulting Group

Building the Model

30/11/2017 Gobar Consulting Group

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

• verview

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

• wners 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

• rganisation 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)

30/11/2017 Gobar Consulting Group

BIM GIS

How do you fit 3 elephants in a Volkswagen Beetle?

30/11/2017 Gobar Consulting Group

Use Case 1: 2D parcels in a 3D database

30/11/2017 Gobar Consulting Group

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)). 30/11/2017 Gobar Consulting Group

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

30/11/2017 Gobar Consulting Group

Scenario 2: Multi level use rights

Building (Malietoren) above the Utrechtsebaan (A12) The Hague source:www.wegenforum. Nemo, Amsterdam and the Evoluon, Eindhoven 30/11/2017 Gobar Consulting Group

Land Administration Domain Model (LADM)

30/11/2017 Gobar Consulting Group