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BIM / Field notes

Build Lightweight BIM with Grasshopper and Speckle

Use Grasshopper and Speckle to structure, share and communicate lightweight BIM information.

Marijn Luijmes2 min readCompanion to the video of

A parametric definition can contain valuable project information while remaining inaccessible to most of the team. A lightweight BIM workflow with Grasshopper and Speckle aims to share that information in a form that others can inspect and reuse, without requiring everyone to operate the original canvas.

Publish objects with meaning

Geometry explains shape, but project decisions often need more: what an element represents, which option it belongs to and which properties describe it. Define a modest, consistent information structure alongside the generated objects.

The facade assembly and property-related components are shown together.
Adding properties to facade objects before publishingThe facade assembly and property-related components are shown together.Watch this moment at 0:48

Choose properties according to the review task. A small set of reliable attributes is easier to compare than a large collection with inconsistent names or missing values. Keep identifiers stable enough to connect an object to its related information.

Individual panels appear alongside the repeated-element logic in Grasshopper.
Reusable facade panels become block instancesIndividual panels appear alongside the repeated-element logic in Grasshopper.Watch this moment at 1:15

Check the receiving view

Sharing is successful when the recipient can understand what arrived. Inspect the published model outside Grasshopper. Can a colleague find the relevant objects and see the information needed for a decision? The answer matters more than whether an export operation completed.

The published towers can be inspected in a browser-based model view.
Opening the complete building model in SpeckleThe published towers can be inspected in a browser-based model view.Watch this moment at 2:10

Speckle forms a bridge between the authoring model and a wider workflow. Treat that bridge as an interface with explicit expectations: what is included, which model state it represents and what level of detail a reviewer should expect.

The receiving view isolates a floor while the remaining building is faded.
Filtering the published model to a single storeyThe receiving view isolates a floor while the remaining building is faded.Watch this moment at 2:17

Keep lightweight BIM purposeful

This approach can suit early design and internal review, where structured geometry is useful but a full production BIM process would be disproportionate. It should not imply that every downstream requirement is already satisfied. Define separate checks for formal exchanges, coordination or delivery when those become part of the scope.

A portion of the facade is isolated in the browser for closer object review.
Inspecting a small facade assembly in the receiving modelA portion of the facade is isolated in the browser for closer object review.Watch this moment at 2:30

From concept to canvas

See the workflow in practice

The companion video shows the model and the workflow behind these ideas. Watch the walkthrough when you want to see how the pieces connect.

Watch on YouTube