Parametric Modeling is an approach used in Building Information Modeling (BIM) that allows the creation of flexible, data-driven 3D models that can automatically adapt and update based on defined rules and relationships.
In parametric BIM models, the various building components like walls, doors, windows etc. are not static objects but rather "parametric objects" defined by associated data parameters like dimensions, materials, quantities and formulas governing their behavior.
These parameter values are interconnected through algorithmic relationships within the digital model. When any parameter value is modified, the entire model intelligently recalculates and adapts all related components automatically per the defined rules and constraints.
For example, if the height parameter of a door object is increased, the surrounding wall heights and other adjoining components will adjust accordingly to maintain accurate proportions and assembly logic based on the specified parametric relationships.
Parametric modeling enhances design efficiency by allowing rapid iteration and exploration of multiple options through easy editing of driving parameters. It enforces coordination and maintains consistency across the model when changes occur.
The key benefits include automated generation of design alternatives, accelerated design processes through reduced manual rework, improved multi-disciplinary collaboration by defining shared parameters, and seamless documentation by deriving 2D views/drawings from the adaptable parametric model.
Overall, parametric modeling transforms BIM into an associative data-driven workflow that responds dynamically to changes, rather than static 3D representations, thereby optimizing the design process.
