Design & BIM
What is Parametric Design?
Parametric design defines geometry through rules and relationships rather than fixed shapes: change a parameter (floor height, panel spacing, sun angle) and the whole design updates consistently. The designer authors the logic; the computer produces the instances.
In practice
Grasshopper and Dynamo are the standard parametric environments in AEC, used for everything from facade panelization to space planning logic. Parametric models are also the foundation many generative and optimization tools build on.
Tools for Parametric Design
Grasshopper
Visual programming for Rhino
Dynamo
Visual programming for Revit
Rayon
Fastest tool for architectural drawings
Hypar
Space planning software that turns a client program and a site underlay into room layouts, starting diagrammatically and developing into detailed plans with furniture, equipment, and automatic clearance and clash checking, then exporting to Revit and Rhino. Generative functions written in C# or Python run underneath, and the Elements SDK is open source.
Related terms
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