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The Quiet Revolution in Building Design and Construction: BIM
Building Information Modeling
BIM Definition
Building Information Model"Building information modeling integrates all of
the geometric model information, the functional requirements and capabilities, and piece behavior information into a single interrelated description of a building project over its lifecycle. It also includes process information dealing with construction schedules and fabrication processes."
Conventional design document creation
Floor Plan
Sections
Eleveations
Perspective drawing3D model
Presentation / rendering
Bill of MaterialsContractingSchedulingConstructing
Using / MaintainingDemolishing
Detailing
Design documents over lifecycle of a building
Time
Communication structure in AEC
HVAC Engineer
Constr. Engineer
Building Owner
Civil Engineer
Structural Engineer
Facilities Manager
Energy Consulta
nt
Architect
Building information model paradigm
• Building is designed assembling parametric objects that are related to each other
• Every object of the building has a set of properties that can be interpreted in different contexts
• Geometrical representations (e.g. drawings) are only one of many aspects. Drawings can be generated dynamically from existing data.
• Changes to the model are reflected in all depending documents
• Different domains (structural engineering, building physics etc.) have different views on a building model
Building information model paradigm
• Building is designed assembling parametric objects that are related to each other
• Every object of the building has a set of properties that can be interpreted in different contexts
• Geometrical representations (e.g. drawings) are only one of many aspects. Drawings can be generated dynamically from existing data.
• Changes to the model are reflected in all depending documents
• Different domains (structural engineering, building physics etc.) have different views on a building model
Non-parametric building elements
Window as non-parametric geometry:
●When size of window is manipulated by scaling, the profiles of the window frame are scaled as well
●Each part of the frame has to be adjusted
●Many operations are necessary => time and errors
Parametric Windows in BIM / CAAD packages: Revit
BIM: Relationships among objects
Geometric Properties
- Length
- Width
- Height
Material Properties
- Mass
Construction Type
- Insulation
- Load Bearing
15.33
0.40 m
3.70 m
120 kg/m3
No
Yes
Wall NS332
Geometric Properties
- Length
- Width
- Height
Material Properties
- Mass
- Conductivity
Product
- Manufacturer
- Price
…
1.5 m
1.22 m
2.00 m
20 kg/m3
0.84 J/s
Window Corp Inc.
2,500 EUR / piece
...
Window W2234
Is placed in
Building information model paradigm
• Building is designed assembling parametric objects that are related to each other
• Every object of the building has a set of properties that can be interpreted in different contexts
• Geometrical representations (e.g. drawings) are only one of many aspects. Drawings can be generated dynamically from existing data.
• Changes to the model are reflected in all depending documents
• Different domains (structural engineering, building physics etc.) have different views on a building model
Different representations of parametric objects
• Low detail 1:100
• Medium detail 1:50
• High Detail 1:50
Building information model paradigm
• Building is designed assembling parametric objects that are related to each other
• Every object of the building has a set of properties that can be interpreted in different contexts
• Geometrical representations (e.g. drawings) are only one of many aspects. Drawings can be generated dynamically from existing data.
• Changes to the model are reflected in all depending documents
• Different domains (structural engineering, building physics etc.) have different views on a building model
Different representations of parametric objects
Different representations of parametric objects
Different representations of parametric objects
Building information model paradigm
• Building is designed assembling parametric objects that are related to each other
• Every object of the building has a set of properties that can be interpreted in different contexts
• Geometrical representations (e.g. drawings) are only one of many aspects. Drawings can be generated dynamically from existing data.
• Changes to the model are reflected in all depending documents
• Different domains (structural engineering, building physics etc.) have different views on a building model
Central Building Information Model
Communication and Knowledge Exchange
HVAC Engineer
Constr. Engineer
Building Owner
Civil Engineer
Structural Engineer
Facilities Manager
Energy Consulta
nt
Architect
HVAC Engineer
Constr. Engineer
Building Owner
Civil Engineer
Structural Engineer
Facilities Manager
Energy Consulta
nt
Architect
Shared Data Model
Now Then?
That’s it!
