Toward the Integration of Spatial and Temporal Information for Building Construction

1
Toward the Integration of Spatial and Temporal
Information for Building Construction

• Shen-guan Shih and Wei-lung Huang
• National Taiwan University of Science and
  Technology

2
Content

• Spatial and temporal information
• Spatiotemporal integration
• A prototype
• Conclusion

3
Spatial and Temporal Information
Spatial
Temporal
Plan
Schedule
Elevation
Construction plan
Section
Specification
Cost
Designers
Engineers
4
Spatial and Temporal Information

• Spatial information
• Position
• Dimension
• Component
• Spatial relation/topology
• Temporal information
• Time
• Duration
• Activity
• Sequence and dependency

5
Data model

• State, event and activity

Activity
In-activity state
Pre-activity state
Post-activity state




Starting Event
Ending Event




Duration
Process

6
Levels of integration

• Recording and presentation of changes of objects
  over time
• Cross analysis of spatial and temporal
  information in construction process
• Automatic analysis of spatial relationships
  between construction activities
• Graphical Simulation of the dynamic process of
  construction

7
LEVEL 1
The recording and presentation of sequential
changes of objects over time
8
LEVEL 2

• Cross analysis of spatial and temporal
  information in construction process

9
LEVEL 3

• Automatic analysis of spatial relationships
  between construction activities

10
LEVEL 4

• To simulate the execution of the construction
  plan upon possible situations
• Causal relationships between activities and state
  changes
• Means of estimating how well an activity can be
  performed under a given condition

11
A Prototype
12
Linking forms and activities
Temporal information
Spatial information
JUNE
10 11 1 2 13 14 15
Rebar
Formwork
Concrete
13
Linking drawing with schedule
14
Database
15
Functions of the system

• Record and Request spatiotemporal information
  from the drawing
• Cross analysis of spatiotemporal information
  (quantity, cost, space, and time)
• Graphical presentation of construction status
  with the building model

16
Spatiotemporal analysis
17
Graphical display of construction status
18
Conclusion

• Opinions from experts
• the system is powerful, yet not practical in
  realistic projects
• too much work to prepare data for building model
  and construction process
• requires tedious work to make links between
  building elements and relating activities

19
Redirection of the research

• Toward decision-making support in the early phase
  of a project
• Provide higher levels of abstraction in the
  design model and construction schedule
• Need automatic process to link building elements
  and construction activities

20
A revised framework
21
Toward the Integration of Spatial and Temporal
Information for Building Construction

• Shen-guan Shih and Wei-lung Huang
• National Taiwan University of Science and
  Technology