Show Overhead Elements in Plan With Linework (Dashed Overhead Edges)

1. Goal: show overhead coverage/overhang edges as dashed lines while keeping them linked to the model.
2. Temporarily reveal the overhead element (e.g., a slab above) using:
   • Underlay (look up to the relevant level) or other view settings that make the slab visible.
3. Apply model-linked dashed edges:
   1. Activate Linework.
   2. Choose a dashed line style.
   3. Click the slab edges you want to appear dashed in plan.
4. Clean up the temporary display:
   • Reset Underlay/Overlay back to None so you don’t see both layers at once.
5. If slab geometry changes:
   • Existing dashed edges stay on the edges you tagged.
   • New edges (new vertices) may need re-applying Linework.

Note: Annotation/detail lines are faster but disconnected from the model and won’t update when geometry changes. Prefer Linework when you need model-linked dashed edges.

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Taught in

• BIM + Computational Workflow · 2023 — original class recording lives there.