the quiet revolution in building design and construction: bim

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!