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

Design documents over lifecycle of a building

Communication structure in AEC

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

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

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 Now Then?

That’s it!