ecently, Construction data has evolved from CAD to BIM and BIM becomes more important data used in various fields like facility management and 3D GIS construction, so there is an increasing need for developing technologies that can be effectively used in post-construction steps. There are lots of trials to model and service not only geographical terrain and outdoor but also indoor space. From this perspective, establishment of BIM and GIS interoperable method and development of service platform became the most important core technology. On this research, spatial data linkage model has been devised to smoothly implement the interoperability between two different kinds of data - BIM data and GIS data. The platform basically displays BIM data based on 3D GIS such as WorldWind Java developed by NASA and Google Earth. It is also possible to interactively move in and out the buildings and also to see the outside of the building when a user is inside the building and inside of the building while a user is outside the building. Besides, the platform makes users look up the objects of buildings and properties of objects one by one, floor by floor, by similar properties, or all. Users can also edit the properties of objects and do spatial queries for analysis of the data. This project is co research project of KICT(Korea Institute of Construction Technology) and Gaia3D and working closely together to develop BIM and GIS Interoperability Open-Platform for the integration of BIM and GIS data since 2012 and have developed the system for smooth operation of big size 3D BIM data and GIS data about plenty of buildings in areas or cities, not just one building. Now, core technologies to integrate BIM into GIS are successfully developed and we will keep improving the system step by step. KICT and Gaia3D together have designed and developed BIM and GIS interoperability open-platform based on the spatial data linkage model. Links between BIM data and GIS data enables efficient and seamless management of indoor and outdoor information at the same time and it also could be used for various services such as real estates and AR (Augmented Reality) services. Gaia3D develops 3D facility management system for Antarctic King Sejong science station to efficiently manage the facilities and publicly promote the station using BIM on GIS system with open source GIS software.

1. Design and Implementation of
BIM and GIS Interoperability
Open Platform
16th June 2014
HONG, Chang-Hee(KICT)
PARK, Heegu(Gaia3D Inc.,)

2. Introduction
:What is BIM on GIS project?

3. 3Introduction to BIM on GIS Open Platform
BIM data GIS data
Objects of Buildings Objects on the Earth
Walls, Pillars, Floors, Windows, Doors, etc. Roads, Buildings, Mountains, Trees, etc.
Usually created by Human
Usually generated via surveying(and
processing)
.RVT, .IFC, and so on .SHAPE, .GEOTIFF, and so on
BIM data vs. GIS data
 There’re basically and originally differences between BIM data and GIS data.

4. 4Introduction to BIM on GIS Open Platform
BIM data GIS data
BIM data vs. GIS data
 BIM data and GIS data are xenogeneic data.

5. 5Introduction to BIM on GIS Open Platform
 Data model to integrate BIM data with GIS data to seamlessly and freely connect
indoor to outdoor
 BIM and GIS interoperability platform for various applications and services
 Collaborative research project of Korea Institute of Construction Technology(KICT)
and Gaia3D, Inc.,
BIM on GIS project
Structure
Facility / Building
Room
City
World
Outdoor
Components
Country
Infrastructure
Feature / Building
Indoor
Building information Model
[BIM]
[GIS]
Geographic Information System

6. 6Introduction to BIM on GIS Open Platform
 Developing BIM and GIS interoperability platform for various applications and
services
 Developing geospatial data format for BIM on GIS
 Developing algorithm for LOD representation
 Developing visualization technology about geospatial data of massive BIM on GIS
 Developing interoperability platform for BIM on GIS
 Platform stabilization/commercialization and development for application services
1st Year(2012) 2nd Year(2013) 3rd Year(2014) 4th Year(2015) 5th Year(2016)
Base Research
Pilot Implementation,
Architecture Design,
Specification
Definition
Key Technical
Elements
Data Model,
Element Technology
Platform Sever
Platform
Development
Adaptive LOD,
3D Visualization Technology,
BIM/GIS Platform
Commercialization
Stabilization,
Performance Improvement
S/W Packaging,
Application and Service Technologies
Milestone

7. Technology - System
:System for BIM on GIS project

8. 8Introduction to BIM on GIS Open Platform
Rapid displaying Terrain model and Photorealistic
3D buildings
 Supporting various kinds of data types
including BIM data, terrain elevation data, ortho-
images, photorealistic 3D building model, indoor
texture, etc.
Supporting Data Structure
 Supporting database based data structure and schema
 Simultaneous spatial query with BIM and 3D GIS
 Overlapping analysis with previously built data
 Supporting BIM/GIS data model
Rapid 3D display of big size data
 Rapid 3D display of big size data
 3D engine development supporting mobile
environment via hierarchical structure of
BIM/GIS data
Server Mobile device
Data Simplification
Spatial Indexing
Data Compression
3D Rendering
Memory Management
Data Streaming
Target System

9. 9Introduction to BIM on GIS Open Platform
Object Index
Geometry
Spatial Index
Property
Header
IFCG3D
* Industry Foundation Classes (IFC) data model is intended to describe building and construction industry data. It is a platform neutral, open file
format specification that is not controlled by a single vendor or group of vendors. It is an object-based file format with a data model developed by
buildingSMART (formerly the International Alliance for Interoperability, IAI) to facilitate interoperability in the architecture, engineering and
construction (AEC) industry, and is a commonly used collaboration format in Building information modeling (BIM) based projects
Service Model of IFC for Interoperability
 Service Model: IFC conversion format for BIM/GIS interoperability
 G3D is designed for rapid display of big size IFC data based on GIS
 Characteristics of G3D
 Including IFC geometry and property information
 Relative coordinate + Georeference information(Latitude, Longitude, Altitude,
Direction, Etc.)
 LOD and spatial indexing information for rapid display
 Geometry information based on file system
 Property information based on database (ongoing)

10. 10Introduction to BIM on GIS Open Platform
Space LOD
Geometry Properties
(Semantic LOD)BIM data GIS data Shape
Outdoor
LOD0 -
 Only terrain data
 DEM+orthoimage
 None
LOD1
 Boundary model
 Prismatic buildings
 Virtual texure
 DEM+orthoimage
 Prismatic buildings
 Virtual texture
 General properties
LOD2
 Boundary model
 Simple roof structures
 Photorealistic texture
 DEM+orthoimage
 Simple roof structures
 Photorealistic texture
 Floorspecific
properties
LOD3
 Boundary model +Parametric model
 Representation of precise Object
 Photorealistic texture
 DEM+orthoimage
 Representation of precise Object
 Photorealistic texture
 Exteriorproperties
 Facilities’exterior
properties
Indoor+
Outdoor
LOD4
 Boundary model +parametric model
 Buildingenvelope
 DEM+orthoimage
 Representation of precise Object
 Photorealistic texture
 Buildingenvelope
properties
Indoor
LOD5
 Parametricmodel
 Buildingenvelope
-
 Allpropertiesof
buildings
LOD6
 Furniture,MEPmodel
 Irregularshapedobjects
-
 Allpropertiesof
buildings
Designing Level of Detail(LOD)
 Newly defined LOD for BIM on GIS based on CityGML and BIM data type

11. 11Introduction to BIM on GIS Open Platform
Simplification
Hierarchical LOD generation throughout
applying simplification algorithm
Coarse Fine
LOD2 LOD3 LOD4 LOD5
LOD1 LOD2 LOD3 LOD4
 Simplification of building inside
 Simplification of building envelope
LOD1
 Building inside objects simplification
and LOD creation
 Building outside objects simplification
and LOD creation
Hierarchical
Data Structure
Data structure throughout spatial
indexing based on Octree
Data Streaming
High speed rendering throughout data
streaming and visualization
 Spatial division method based on
Octree for spatial query about building
objects
 Applies Octree to all LOD including
interior and exterior
 Proper LOD level display from screen
division
 Improving rendering speed throughout
loading necessary data
 Multi-threading
 Efficient memory resource
management
Best Screen
Division
Hierarchical
LOD
Effective
Memory
Mgmt.
Data Search/
Compression/
Sending
Cont. Screen
Display
Technology for Rapid Display
 Simplification, Hierarchical, and Data Streaming are required for rapid display.

12. 12Introduction to BIM on GIS Open Platform
Technology for Rapid Display
 G3D format
 G3D stands for Gaia3D
 Defined and developed by Gaia3D
 For rapid processing of BIM data for visualization
 Adopts block/reference concept: Generated geometries is defined as blocks
and all objects referring to blocks is defined as reference.
objects in BIM geometries in G3D objects in BIM data in G3D
blocks
reference info list
object1 → block1 & coordinate conversion info.
object2 → block1 & coordinate conversion info.
object3 → block1 & coordinate conversion info.
object4 → block2 & coordinate conversion info.
object5 → block2 & coordinate conversion info.
object6 → block3 & coordinate conversion info.
＋
object1
object2
object3
object4
object5
object6
object1
object2
object3
object4
object5
object6
Block/Reference concept

13. 13Introduction to BIM on GIS Open Platform
BIM/GIS Interoperability Platform
Application
Plug-in
Client
Server
DBMS
Data
Facility Manager Disaster Manager Energy Manager
Desktop 3D Viewer BIM Viewer Web Client
3D BIM/GIS Object
Server
Vector Server Raster Server
Spatial DBMS
Geometry
Attribute
BIM/GIS Model CityGML + MEP IFC BIM
System Architecture for BIM/GIS Interoperability Platform
 For interoperable BIM on GIS platform, complicated system is required.

14. 14Introduction to BIM on GIS Open Platform
PostgreSQL DB
PostGIS
BIMServer.org
ORM Framework
(Hibernate)
Java Network Framework
(Netty)
Open APIs
Berkeley DB
GIS Server(GeoServer)
BIM/GIS Web Server
Batch Module
GIS Data Files
(Raster, Vector)
BIM Data Files
(Geometry)
WMS WFS TMS
Client WorldWindJava
Other Service Applications(FMS, BMS…)
Desktop BIM/GIS Viewer Web Browser(Applet) Mobile App
Server
Data
Play Framework
HTTP
Platform Architecture
 Target platform should provide accessibility, interoperability, scalability, and
compatibility.

15. Technology - Client
:How does BIM on GIS look like?

16. 16Introduction to BIM on GIS Open Platform
3D GIS
BIM Viewer
World Wind Java for 3D GIS
 World Wind is an open-source (released under the NOSA license) virtual globe developed by NASA and the open source community for use on personal computers.
 Old versions relied on .NET Framework, which only ran primarily on Microsoft Windows. The more recent Java version, World Wind Java, is cross platform.
 World Wind Java is a Software Development Kit (SDK) which is aimed at developers and is not a standalone virtual globe application in the style of Google Earth.
3D GIS + BIM
 Seamlessly connecting indoor and outdoor
 Interactively viewing inside and around the
building
 Easily searching properties of the building
Client Development
 Out target is to integrate BIM data into 3D GIS data.

17. 17Introduction to BIM on GIS Open Platform
Client Development
 Providing satellite image/aerial photo service using WMS (Web Map Service) from
GIS server
 NASA Blue Marble Imagery, I-cubed Landsat Imagery, Aerial Photo(12cm Spatial
Resolution)

18. 18Introduction to BIM on GIS Open Platform
Client Development
 Displaying inside and outside of building via BIM/GIS interoperability service
 Displaying BIM data with relative coordinate on absolute coordinate based WWJ
based on georeference information of spatial data link model(G3D)

19. 19Introduction to BIM on GIS Open Platform
Client Development
 BIM data(IFC) visualization – Visualizing inside and outside building

20. Case Study
:Who uses BIM on GIS open platform?

21. 21Introduction to BIM on GIS Open Platform
Basic
Property
Mgmt.
Facility
Maintenance
Specific
Information
Management
3D Visualization of Building Inside
 Efficient facility management system for Antarctic King Sejong Science Station
 Interactively viewing inside and outside of facilities
 Conveniently editing properties of features
 Comparing and Analyzing features for better maintenance
 Easily monitoring current status of objects and features
 Providing virtual experience and advertising the station to the public
KOPRI(KOrea Polar Research Institute)

22. 22Introduction to BIM on GIS Open Platform
 Overall viewing of all building in the station
 34 small and medium sized buildings
KOPRI(KOrea Polar Research Institute)

23. 23Introduction to BIM on GIS Open Platform
 Possible to look outside from the inside and inside from outside
KOPRI(KOrea Polar Research Institute)

24. 24Introduction to BIM on GIS Open Platform
 Sliding all objects of a building
KOPRI(KOrea Polar Research Institute)

25. 25Introduction to BIM on GIS Open Platform
 Spatial query to search objects with some conditions
KOPRI(KOrea Polar Research Institute)

26. 26Introduction to BIM on GIS Open Platform
 Big sized machines
KOPRI(KOrea Polar Research Institute)

27. 27Introduction to BIM on GIS Open Platform
Movie Clip

28. 28Introduction to BIM on GIS Open Platform
 Next projects(Hope!!!)
KOPRI(KOrea Polar Research Institute)
Antarctic Jang Bogo Station
 Starts operating in 2014
 Mainland in the Antarctic
 Located in Terra Nova Bay in Northern Victoria Land
 4,500km from King Sejong Science Station and 350km
from McMurdo station(USA)
Araon, Icebreaker
 Launches in 2009
 Specially designed vessel to navigate ice covered polar
regions with a powerful propulsion unit and
strengthened body
 Equips state-of-the-art research equipment conducting
such as geophysics, biology, oceanography, etc.

29. Applications
:Where can BIM on GIS be used?

30. 30Introduction to BIM on GIS Open Platform
Monitoring system via comparing BIM data with GIS data
 Recognizing changed areas throughout overlapping and comparing BIM data and
GIS data

31. 31Introduction to BIM on GIS Open Platform
 Providing BIM and GIS data to users in real-time based on cloud
environment(Geospatial information + Property information)
Cloud based real-time information providing service

32. 32Introduction to BIM on GIS Open Platform
 Determining direct sunlight area inside buildings via BIM on GIS service
 Temperature simulation inside building for Energy Management
Direct sunlight and temperature modeling inside buildings

33. 33Introduction to BIM on GIS Open Platform
 Efficient facility management throughout analyzing and comparing current BIM
and GIS data with past BIM and GIS data
 Efficient Repair and Replacement for line, pipes, lights, tiles, and so on of the
facility
Facility Management

34. 34Introduction to BIM on GIS Open Platform
 Security, Virtual construction, Navigation throughout integration and connection
of 3D virtual model and real data
Augmented Reality
Security Navigation
Virtual Construction Virtual Remodeling

35. 35Introduction to BIM on GIS Open Platform
 Fast and precise analysis by overlapping analysis of data from various fields
Overlapping analysis with various data

36. In short,

37. “BIM meets GIS,
enhancing the power
of BIM.”

38. Design and Implementation of
BIM and GIS Interoperability
Open Platform
16th June 2014
HONG, Chang-Hee(KICT)
PARK, Heegu(Gaia3D Inc.,)