From BIM to iBIM Dr. Jack CHENG Associate Professor Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology HKIBIM Annual Conference 2017 Theme: Transforming BIM to Action Date: 22-Nov-2017 (Wed) Time: 9:00 a.m. – 4:30 p.m. Venue: Grand Ballroom I-III, Level 6, Royal Plaza Hotel, Hong Kong Organizers: The Hong Kong Institute of Building Information Modelling (HKIBIM) http://www.hkibim.org HKIBIM Annual Conference 2017 is the 8th Annual Conference organized by the Hong Kong Institute of Building Information Modelling (HKIBIM). It is the premier annual event for experienced professionals to demonstrate the practical use of Building Information Modelling (BIM) processes using real cases. The speakers are encouraged to illustrate lessons learned in practical projects so that more professionals from different disciplines can improve their productivity through efficient use of BIM and advance practical knowledge. This is an exciting opportunity to share your knowledge and experience with the larger BIM community.

1. From BIM to iBIM
Dr. Jack C.P. CHENG
Associate Professor of Civil and Environmental Engineering
Director, RFID Center
The Hong Kong University of Science and Technology (HKUST)
Chairman, Autodesk Industry Advisory Board (AIAB)
HKIBIM Annual Conference 2017
22 November 2017

2. From BIM to iBIM
I-BeamDr. Jack C.P. CHENG
Associate Professor of Civil and Environmental Engineering
Director, RFID Center
The Hong Kong University of Science and Technology (HKUST)
Chairman, Autodesk Industry Advisory Board (AIAB)
HKIBIM Annual Conference 2017
22 November 2017

3. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Dr. Jack C.P. CHENG
• Associate Professor, Department of Civil and Environmental Engineering, The
Hong Kong University of Science and Technology (HKUST)
• Research areas include BIM, 3D GIS, Internet of Things (IoTs), AR/VR, data
mining, construction informatics and management, smart city, green buildings,
and sustainable construction
• Received PhD from Stanford University
• Chairman, Autodesk Industry Advisory Board (AIAB)
• Director and Treasurer, American Society of Civil Engineers (ASCE) HK Section
• Committee Member, Hong Kong Construction Industry Council BIM Committee
• Chair, Global Center for Excellence in Computing, ASCE Technical Council on
Computing and Information Technology (TCCIT)
• Professional Member of HKIBIM,
Founding Member of buildingSMART Hong Kong,
Member of Association of Energy Engineers,
Certified Carbon Auditor Professional, etc.
• Young BIMer of the Year 2014, awarded by
Hong Kong Construction Industry Council

4. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
What Are We Missing?
• Virtual Design Construction (VDC) Scorecard
??

5. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
BIM Implementation
People
Process
Technology
/ Tools
Information
BIM:
Information Hub
BIM is NOT
only about
Technology
or Tools

6. Soldier
61950s
Construction
Worker /
Engineers
Current
WW2 (~1945) Current
Did We Make
Use of
Technologies?

7. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
From CAD to BIM to iBIM
Hand Drawn
CAD
BIM
Clash detection
Generate drawings
Quantity takeoff
Visualization
Etc.
iBIM
Integrated BIM
Intelligent BIM
Information-rich BIM
Interoperable BIM
Information Hub

8. Future Impact and Likelihood of New Technologies in
Construction

9. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Integrated BIM…
Integrated
BIM
Internet of
Things
(IoT)
Building
Management
Systems
(BMS)
Facility
Management
(FM) Systems
For FM, AM
and O&M

10. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Using BIM and Wireless Sensor Network for
Building/Facility Life Cycle Management
Local Sensor information read by
mobile on 3D Model layout portal
Sensors integrated
with Bluetooth
Mesh
Return sensor
info
Local Facility Management
Remote Sites Monitoring and Control
BIM model with
ACS-MEP attribute
matching
Component DB
Knowledge-based BIM database
3D BIM
Layout Info

11. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Pilot Site – Hong Kong Film Archive
• Environment Temperature: 0-4℃
• Humidity: ~ 20-30% RH
• Confined space
• Strong acidic environment
• Hard wire not possible
 Wireless Bluetooth Mesh
(Courtesy: EMSD)

12. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
User Interface

13. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
BIM with Sensors/RFID/IoT
• Types of sensors
8.CO sensors
9.Smoke sensors
④Safety
Management
②Human
Comfort
2.Humidity sensors
3.Temperature sensors
4.Sound sensors
5.Light sensors
6.CO2 sensors
①Component
Monitoring1.Current sensors
③Space
Monitoring
7.Occupancy sensors
1.
2. 3. 4.
6.5.
7.
8
.
9.
(Cheng, Chen and Chen, 2016)

14. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
BIM with Sensors/RFID/IoT
• BIM object families of sensors
A temperature sensor in bedroom A CO2 sensor in dining room A current sensor in the lift
An occupancy sensor in the tutor room Sensor tracking via ID in the Revit modelSmoke sensors on the ceiling of each
room and corridor (Cheng, Chen and Chen, 2016)

15. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
BIM with Sensors/RFID/IoT
• Integrate BIM and IoT technology to improve the operation efficiency of
building facilities considering building energy consumption as well as
indoor human comfort.
Energy
Consumption
Human Comfort
Management
(Cheng, Chen and Chen, 2017)

16. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
BIM with Sensors/RFID/IoT
• Revit Plug-in for Sensor Management
Plug-in interface (Cheng, Chen and Chen, 2016)

17. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Integration of BIM and IoT Sensor Network
Real time data window
Sensor model
The condition monitoring and operation status of HVAC system
Operation
state

18. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Integration of BIM, BMS and FM System
BIM COBie
BMS
FM Software
COBie framework is
set up in Revit
COBie data is exported from Revit
and aggregated through
construction
COBie data is
imported to
CMMS/FM Software
Using Autodesk
COBie Extension for
Revit

19. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Integration between FM System (Archibus) and BIM

20. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Illustrative Scenario-HKUST library
(Cheng et al. 2016)
• Check maintenance work orders and broken components in BIM model

21. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Integrated BIM…
Integrated
BIM
Internet of
Things
(IoT)
Geographic
Information
Systems
(GIS)
Building
Management
Systems
(BMS)
Indoor
Localization /
Positioning
(Mobile)
Facility
Management
(FM) Systems
Augmented
Reality (AR) /
Mixed Reality
(MR)
For FM, AM
and O&M

22. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Space
Natural Asset
Linear Structure
Structure
Building
Facility / Built
Theatre / World
Sub-Systems
System
Level
Site
Real
Property Asset
Country
State / Province
County
Installation /
Region
Node
Segment
Room
Space
System
Level
Sub-Systems
Room
Water / Sea
Land / Parcel
Underground
Air / Space
Geospatial Information
(Geographic Information System)
Overlay
Overlay
Components
Components
City
Building information
(Building Information Models)
BIM-GIS Integration
• Macroscopic
• Information hub of geospatial data
• Microscopic
• Information hub of building component data

23. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
BIM-3D GIS Integration Framework
(Deng and Cheng 2016)

24. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Comparison of Evolution Progresses of GIS, BIM and
Integrated BIM-GIS
(Song, Tan, Cheng, et al. 2017)
Spatial-temporal
analysis

25. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Augmented Reality – Mobile Devices (Marker-based)
(Chen, Chen and Cheng, 2017)

26. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Mixed Reality – Hololens (Marker-less)
(Chen, Chen and Cheng, 2017)

27. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
AR Collaboration – Mobile Devices (Marker-less)
PC
Phone
(Chen, Chen and Cheng, 2017)

28. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Location-Aware BIM Framework
• Idea of Wi-Fi fingerprinting
- As the existence of wireless access points (WAPs) have become
prevalent, the propagation of different Wi-Fi signals forms unique
“fingerprints” at different positions in an indoor area.
• Assumptions
- Availability of multiple fixed WAPs indoor
- Signal strength levels are steady at each particular point indoor
WAP 1
WAP 2 WAP 3
WAP 4
WAP 5

29. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Location-Aware BIM Framework – Example
(Li, Chen, Chen and Cheng, 2017)

30. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Integrated BIM…
Integrated
BIM
Engineering
Simulation
and
Analyses 3D Printing
(Machinery)
Internet of
Things
(IoT)
Geographic
Information
Systems
(GIS)
Building
Management
Systems
(BMS)Indoor
Localization /
Positioning
(Mobile)
Facility
Management
(FM) Systems
Laser
Scanning
Drones
(UAV)
Augmented
Reality (AR) /
Mixed Reality
(MR)
For FM, AM
and O&M
For Design
For Construction
Planning and
Monitoring
For
Fabrication

31. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Integrated Building Design
Building
Information
Modelling
(BIM)
Embodied carbon
& construction materials
Structural design Energy simulation
& operational carbon
Impact of external wind on
indoor thermal environment
Impact of external wind on
indoor thermal environment
Computational fluid
dynamics (CFD)
(Gan et al., 2017)

32. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Green/Sustainable Building Design Optimization
• Low carbon, energy efficiency, human comfort
Revit
BIM Model
Energy Simulation Software (eQUEST)
gbXML
Unconditioned
0, 50, 100 and 150 mm
200 mm
Inside Face
Outside Face
Concrete
Thermal Insulation
Consider different
• Insulation options
• Building configurations
• Construction materials
• Etc.
(Gan et al., 2017)

33. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Integration of BIM Models and Structural Analysis
Automated Optimization + 3D Spatial Information = Automated Clash
Resolution
Automated Construction Drawing
Detailing
3D Arch BIM Structural Analysis Optimized Rebar
Design
Detailing Drawings
(Cheng and Mangal, 2017)

34. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Integration of BIM Models and Structural Analysis
Geometric, Loading and
End-Support Information
Structural Analysis
Automated calculation of:
1. Number of reinforcement
bars
2. Diameter of reinforcement
bars
3. Layout for reinforcement
detailing
BIMmodelStructuralAnalysis
(Cheng and Mangal, 2017)

35. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Developed Plugin
(Cheng and Mangal, 2017)
• Use IFC as exported file

36. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Automated Quality Assessment of Precast Bridge Decks
Rebar Positioning Quality
Surface Quality
Dimensional Quality
BIM

37. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
As-built BIM Model Reconstruction
• Approach: Industry Foundation Classes (IFC)
– Challenge: complex geometries
– Solution: IfcBooleanResult
(IfcBooleanResult)
Resulting IFC model
Valid points
Mixed pixels
Background points
Cluster 1
Cluster 2
NoiseDBSCAN
Density-Based Spatial Clustering of Applications
with Noise (DBSCAN)

38. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Automated Rebar Position Estimation
 Reinforced precast concrete panel with 44 rebars on each long side
38
 Average difference from manual inspection: 0.8 mm
 Automatic and accurate extraction, recognition, and position
estimation of rebars on reinforced precast concrete elements
Over-segmentation
Outliers
Incomplete scanning

39. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Scan-to-BIM for Structures

40. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST) 40
– Find all points near the centerline within its
radius (84mm) from the whole structure
X-Y
Scan-to-BIM for Structures

41. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Site Environment Capturing Using UAV
(https://youtu.be/R7S1xXr3VMM)

42. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Integrated BIM…
Integrated
BIM
Engineering
Simulation
and
Analyses 3D Printing
(Machinery)
Internet
of Things
(IoT)
Geographic
Information
Systems
(GIS)
Building
Management
Systems
(BMS)Indoor
Localization
/ Positioning
(Mobile)
Facility
Management
(FM) Systems
Laser
Scanning
Drones
(UAV)
Augmented
Reality (AR)
/ Mixed
Reality
(MR)
For FM, AM
and O&M
For Design
For Construction
Planning and
Monitoring
For
Fabrication
Artificial Intelligence
Big Data
Computer Vision
3D Printing
Etc.

43. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Relationship Among iBIM
Integrated BIM
Intelligent
BIM
Information-rich
BIM
Interoperable
BIM
Supports
Generates
Requires
iBIM

44. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
(a) Intelligent BIM – Parametric Modeling
• BIM by default should be intelligent in the way that elements have
their own type-specific behaviors and are linked with logics.

45. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
(a) Intelligent BIM – Parametric Modeling and Generative
Design
(https://youtu.be/FS5fJRsqC8U)

46. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
(a) Intelligent BIM – Parametric Modeling and Updating

47. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
(b) BIM-IoT for Indoor Human Comfort Monitoring and Control
The BIM model of New Sports
Center at HKUST

48. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
(b) BIM-IoT for Indoor Human Comfort Monitoring and Control
Air Quality Grade Plugin in Revit

49. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
(b) BIM-IoT for Indoor Human Comfort Monitoring and Control
HKUST Sports Hall

50. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
(c) Intelligent BIM – Automated Maintenance Work Order Scheduling
Tasks
notation
Emergency
Level
Location Type Working
Time (min)
A FMO Office, Lift 15 5/F
X Warehouse 5
B I(high) Library G/F female toilet Water leakage 120
C I Library LG3 Electric wire burnt 60
D I Room 5619, Lift 31 5/F
Window
Electric wire burnt 60
E II Library LC Glass broken 45
F II LT-A Light bulb burnt 15
G II LT-D Light bulb burnt 15
H III(low) Bridge Link Repair 20
I III(low) UG Hall 2 Repair 20
J III(low) Library Entrance Repair 20
Table : Campus Case Information
B
E C
AX
F
G
D
H
I
J
Location of the sites Walking time (in minutes) between
different locations in the example
Result: A  B  X  C  D  X  G
 F  X  E  X  J  H  I
Total time: 450

51. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
(d) Intelligent BIM – Automatic Generation of Fabrication Drawings
Fully Automatic

52. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
(d) Intelligent BIM – Automatic Generation of Fabrication Drawings
• Extraction of non-graphical information from BIM models
Non-graphical
information in
Revit

53. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
(d) Intelligent BIM – Automatic Generation of Fabrication Drawings
• Integration of graphical and non-graphical information using
SolidWorks API
Auto-filling of non-graphical
information from neutral
database (E.g. Excel)
Material
(Deng, Singh and Cheng, 2017)

54. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
(d) Intelligent BIM – Automatic Generation of Fabrication Drawings
(Deng, Singh and Cheng, 2017)

55. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
(e) Intelligent BIM – Generate Machine Codes for Fabrication
• Connecting between BIM models and fabrication machines
• E.g. Generation of G-code program for CNC machines
%
O10000
G00 G90 G80 G28 G17 G20 G40 G49
T01 M06
G00 Z0.5 F70
G00 X5 Y15 F70 ------- point 5
G01 Z-1 F50
G01 X5 Y30 F50 -------- point 6
G01 X25 Y30 ------------ point 7
G01 X25 Y15 ------------ point 8
G01 X5 Y15 -------------- point 5
G00 Z0.5 F70
G00 X0 Y0 F70 ------ point 1
M30
%
 a = 15, b = 20,
 Xc =5, Yc = 15;
 Depth of cutting = 1.00
 Point 1 origin (0, 0)
Program name
Tool change
Tool
name
Linear Cut
Back to origin

56. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
(f) Intelligent BIM – Lean and SCM
• Supply chain management & lean construction supported by BIM
(Sacks et al. 2014)

57. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
4D Modeling (3D + Time)
5D Modeling (3D + Time + Cost)
6D Modeling (Sustainability)
7D Modeling (Facility Management)
8D Modeling (Safety)
nD Modeling
(3) Information-rich BIM

58. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
(3) Information-rich BIM
(NBIMS 2011)
• Data  Information  Knowledge
• Not every piece of information is
important
• How to facilitate reuse of past
information?

59. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
(4) Interoperable BIM 2016 UK
(PAS 1192)

60. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Example: Schematic Integration Between BIM and 3D GIS
• Challenge: Need for mutual interoperability/compatibility
(Deng and Cheng, 2015)
Schema 1
Schema 2
Schema 3
Schema n
BIM
Schemas
Schema 1
Schema 2
Schema 3
Schema m
GIS
Schemasm+n+1 mappings
IFC CityGML
….
….
1. Neutral
2. Commonly used
3. Open schema
IFC
RVT
DXF
FBX
NWD
PLN
Etc.
KML
GML
CityGML
XML
SDF
SHP
LandXML
Etc.

61. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Mutual understanding of terminology

62. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Interoperability Issue: Smart City Supported by BIM
Common Spatial Data Infrastructure
 Which platform (e.g. BIM vs GIS)?
 Can the information still be read decades later?
 How to integrate data of different disciplines with
different terminology?
Data Fusion and Management

63. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Interoperable BIM – Neutral File Standard??
• Must we use neutral file formats like IFC or COBie?
• Ideally, maybe yes…
• But depends on the scope and purposes:
– Across stakeholders in a project? Across software in a project?
Across projects in an organization?
• And need to consider support of tools depending on applications
• In a project, the main objective is to avoid unnecessary checking
and re-inputting data.
HVACie
WALLie
Wsie
Etc.

64. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
BIM Implementation
People
Process
Technology
/ Tools
Information

65. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
BIM: Integrating Multi-disciplinary and Full Lifecycle
Engineering
Analysis
Documentation
Fabrication
Construction
4D/5D
Construction
Logistics
Operation and
Maintenance
Renovation
Programming
Conceptual
Design
Detailed
Design
BIM
Architect
Structural
Engineer
Mechanical
/ HVAC
Engineer
Electrical
Engineer
Plumbing,
Water
Supply,
Sewerage
EngineerFire Services
Engineer
Quantity
Surveyors
Project
Manager
Owner
Contractor
Challenges:
- Different interests
- Different applications
Protocols
Infrastructures
Guidelines
Standards
Etc.

66. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
From CAD to BIM to iBIM
Hand Drawn
CAD
BIM
Clash detection
Generate drawings
Quantity takeoff
4D Simulation
Etc.
iBIM
Integrated BIM
Intelligent BIM
Information-rich BIM
Interoperable BIM

67. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Purpose Driven BIM
BIM: 3D digital representation is the basis, but NOT the END.
iBIM
Integrated BIM
Intelligent BIM
Information-rich BIM
Interoperable BIM
Model
Digital representation
Process
Technology
Approach
Tool
Is What?
To Do What?
Virtually Construct
Simulate
Analyze
Predict
Plan
Calculate
Monitor
Manage
Visualize
Identify
Generate
Communicate
Collaborate
Evaluate
VALUE
For What?
Sustainability
Productivity
ProfitSafety
Reduced Rework
Understanding
Reduced Duration
Satisfaction
Decision Making

68. From BIM to iBIM – HKIBIM Annual Conference 2017 – Jack Cheng (HKUST)
Acknowledgement
• I would like to acknowledge the support from the Hong Kong
Research Grants Council (RGC), Innovation and Technology Fund
(ITF) and the collaborating parties.
• Thanks also go to the research group members who work hard at
the behind.
68

69. From BIM to iBIM
THANK YOU!
Dr. Jack C.P. CHENG
Associate Professor of Civil and Environmental Engineering
Director, RFID Center
The Hong Kong University of Science and Technology (HKUST)
Chairman, Autodesk Industry Advisory Board (AIAB)
HKIBIM Annual Conference 2017
22 November 2017