Automated dimensioning in Revit

Dimensioning is the most repetitive part of producing a drawing set and the easiest to get subtly wrong. Nexar Docs places dimension strings across plans, sections, elevations and 3D views from a recipe you choose, shows you the result before committing, and can roll the whole operation back.

Recipes rather than a wall of settings

Eleven plan recipes cover the usual documentation cases: External Wall Chain, Doors and Windows, Internal Partitions, Structural Setout and the rest. A recipe is a fixed bundle of settings, so two people running the same recipe on the same view get the same drawing.

Advanced mode does not reset what the recipe configured. It reveals exactly which settings the recipe just changed, so you can adjust one value without losing the rest.

What gets dimensioned

Coverage spans walls, openings, grids, structural columns, curtain wall panels, mullions and gridlines as distinct modes, stairs, casework, furniture and MEP elements, plus spot elevations. Section and elevation views add dimension bands for levels and vertical setout.

  • Plans, sections, elevations, details and 3D views
  • Curtain walls handled as panels, mullions and gridlines separately
  • Spot elevations alongside linear dimensions
  • Elements that already carry dimensions are skipped by default, so a second pass adds to the drawing rather than duplicating it

Linked models are first class

Walls and openings pulled from linked Revit files are dimensioned with their transforms resolved, so an architectural link dimensioned from the structural model lands in the right place. The Revit API only permits writes into the active document, so dimensions are created in the model you have open, referencing the linked geometry.

The layout engine

Placing a dimension is easy; placing two hundred that remain readable is the hard part. The layout engine decides which wall face a string references, how strings stack away from the building, and how much space sits between bands. Wall reference choice is exposed rather than hidden, because a string measured to core rather than finish changes the number a contractor reads.

Preview, then commit

Every run can be previewed before anything is written to the model. Completed runs appear in operation history and can be rolled back, which removes the dimensions the run created rather than leaving you to select them by hand.

Common questions

Can Nexar Docs dimension a linked Revit model?

Yes. Walls and openings in loaded Revit links are dimensioned with their transforms resolved. The dimensions themselves are created in the document you have open, because the Revit API only permits writes into the active document.

Will it re-dimension views that already have dimensions?

No. Elements that already carry dimensions are skipped by default, so running a second pass adds what is missing instead of duplicating what is there.

Which Revit versions support automated dimensioning?

Nexar Docs supports Autodesk Revit 2023, 2024, 2025, 2026 and 2027 on Windows.

Can a dimensioning run be undone?

Yes. Runs are recorded in operation history and can be rolled back, which removes the dimensions that run created.

Related

  • Automated tagging
  • Clash detection
  • Classification, COBie and data standards

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