Grasshopper Facade to Revit
Grasshopper Facade to Revit translates a Grasshopper-defined parametric facade and its Rhino .3dm preview into documentation-ready Revit curtain panels with type catalogues and a parameter-driven panel schedule. It walks the definition, infers panel typologies, writes typed panels into a curtain wall system, and updates schedules — available now as a Labs engagement under MSA + Appendix.
- Parametric facade lands in Revit as typed curtain panels tied to a curtain wall system, not Generic Models scattered across the model.
- Panel schedule auto-generates from the type catalogue with counts, sizes, and parameters ready for shop drawings and downstream fabrication export.
- Re-translation on Grasshopper revisions runs as diff-only, so only changed panels rewrite and schedules update with the model.
From rebuild-every-panel to translate-the-definition.
Workflow today
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01
Designer ships Grasshopper definition
Week 0. The design team locks the concept and ships a Grasshopper definition plus a Rhino .3dm preview. The definition encodes panel typologies, rotations, and offsets, but the BIM team receives it as a visual reference rather than a contract-ready dataset. Grasshopper and Rhino stay on the designer’s machine while Revit models lag behind.
Week 0 -
02
BIM team builds curtain wall manually
Week 1–4. The BIM team rebuilds the facade in Revit by hand, panel by panel. They invent a curtain wall type catalogue as they go, often mixing Generic Models, Curtain Panels, and in-place families. Every revision forces a new pass on the panel schedule, and Rhino to Revit translation work stays disconnected from the Grasshopper logic.
Week 1–4 -
03
Late changes break everything
Week 4+. A small Grasshopper tweak — a 3-degree rotation, a new attractor, a panel subdivision change — breaks the manual Revit facade. The team either freezes the Grasshopper definition or accepts a full re-modelling pass. Coordination with Revit models for structure and MEP stalls while everyone waits for the facade to catch up.
Week 4+ -
04
Shop drawings lag
Week 6+. The Revit panel schedule drifts from the model as manual edits pile up. Fabricators receive exports with mismatched counts or missing parameters and chase clarifications. Shop-drawing teams re-measure panels from PDFs instead of trusting the Revit curtain wall, and panel tags in layouts no longer align with the Grasshopper-driven intent.
Week 6+
Workflow with VitruAI
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01
Run the Interop Agent against the Grasshopper definition
Day 1, ~1 hour. You run the Interop Agent against the Grasshopper definition and its baked Rhino geometry. The agent, configured through the Rhino + Grasshopper integration, walks the graph, reads panel typologies, and groups instances by type, size, and orientation. Definitions that only emit raw meshes get flagged for a short calibration pass before translation.
Day 1, ~1 hour -
02
Review the type catalogue
Day 1. The BIM Manager reviews an auto-generated type catalogue that maps Grasshopper typologies to Revit curtain panel types. Edge cases — partial panels at slab edges, corner conditions, or non-rectangular units — appear in a review list for human decision. This is where firm standards for naming, shared parameters, and facade documentation in Revit get baked into the mapping.
Day 1 -
03
Write into Revit curtain wall
Day 1–2. Once mappings are confirmed, the workflow writes a Revit curtain wall system with typed panels, host relationships, and a parameter-driven panel schedule. Panels land as native Curtain Panel or adaptive families rather than Generic Models, ready for shop drawings and coordination. The Revit schedule exports cleanly to CSV, Excel, or IFC for downstream shop drawing automation.
Day 1–2 -
04
Re-run on revisions
Ongoing. When the Grasshopper definition changes, you re-run the workflow and it performs a diff-only translation. Only changed panels rewrite in Revit; stable panels keep their IDs, tags, and detail callouts. The curtain wall, schedules, and sheets stay aligned, and Grasshopper to Revit panels remain tied to the live design definition instead of a one-off import.
Ongoing
Grasshopper facade to Revit — common questions
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Does this work with any Grasshopper definition?
It works best when the Grasshopper definition can bake to a layered Rhino output the agent can read, with clear panel groups or attributes. Definitions that only emit raw mesh geometry without typology metadata are still supported, but they get flagged for a ~1-day calibration pass to define how types are inferred. Under the hood it uses the same translation core as the Interop Rhino–Revit Agent and the general Rhino to Revit translation workflow.
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What about double-curved or freeform panels?
Double-curved or freeform panels that do not match a native Revit curtain panel primitive can be written as adaptive components or grouped into special-case types. In Labs engagements, the firm’s BIM team decides which conditions become adaptive families and which stay as simplified geometry for documentation only. Truly bespoke pieces can be flagged for shop-drawing-side modelling while still keeping counts and locations in the Revit schedule.
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Can the schedule export to fabrication?
Yes, the Revit panel schedule produced by this workflow exports to CSV, Excel, or IFC for downstream fabrication and shop drawing automation. Firms typically include panel ID, type, dimensions, material, and any fabrication code fields as shared parameters. Because the facade lands as native Revit curtain panels, the same schedule can also drive coordination views and clash checks in your Revit integration.
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How does a Labs engagement work?
A Labs engagement typically runs 4–8 weeks under MSA + Appendix, focused on one live project. The VitruAI team calibrates the workflow against your Grasshopper conventions, panel typologies, and Revit family standards, then ships a working agent for that project. Lessons from that deployment fold into the shared Rhino + Grasshopper integration stack and inform future releases of the facade workflow.