Space Separator
Traces the walls of a Revit plan with MEP space separation lines that follow the wall faces, so the Spaces you place afterwards are measured to the finish faces, not to wall centre lines
Back up your project before running any plugin, and always review the results before relying on them. See the EULA
General usage instructions
Placing MEP Spaces in a model you did not author is mostly a boundary problem. The architectural link is there and the walls are there, but Spaces land where Revit’s room-bounding rules put them, not where the air actually is — and the usual answer is to draw space separation lines by hand, a floor at a time. Space Separator draws them for you.
Open a plan, pick which models the walls come from, and run. Every wall the view shows is outlined with space separation lines that follow the faces of the wall rather than its centre line, so the Space areas that follow are measured to the finish faces — the number that belongs in a load calculation. The outline is a true horizontal section of each wall solid, so tapered walls, stacked walls, walls with sweeps and reveals, and in-place families categorised as walls are traced in full.
Openings are decided, not left to chance. A second section above the tallest insert seals door and window openings, so a doorway does not leak one Space into the next. Transfer-grille families do the opposite: wherever one sits, the outline is cut by a fixed width on both faces of the wall, so a Space flows through the wall exactly where the air does.
Run it again after the architect issues a revision and your corrections are still there. Every line the plugin draws carries a provenance stamp: a line you edited keeps your version, a line you deleted stays deleted, a pinned line is never touched, and a line you drew yourself is recognised as yours. One Rebuild all switch resets that journal when you really do mean to redraw the floor — and even then, pinned lines survive.
It is built for MEP engineers placing Spaces against an architectural link, who need boundaries that hold up for HVAC load calculations, energy models and airflow schedules — anything where a Space measured to a wall centre line is the wrong area.
Key features
- Walls from the current model and from the linked models you tick; nested links are folded into their parent instead of being listed separately.
- Lines follow the wall faces, from a real boolean section of the wall solid — tapered, stacked and in-place walls included.
- Door and window openings sealed from a second section above the tallest insert.
- Transfer-grille families cut a gap through both faces, with the width and snap distance you choose; pick the families from what is actually placed in the model.
- Edits, deletions and pins survive the next run; Rebuild all resets that journal, pinned lines excepted.
- Colour overlay by origin — built by the plugin, edited, drawn by hand, pinned — applied as view overrides, so switching it off leaves the drawing as it was.
- Visibility judged the way the view judges it: view range, plan regions, the crop region, and a scope box selected before the run.
- Minimum wall height, so stubs and offcuts of the storey above stay out of the outline.
- Diagnostic log with one row per wall and per grille, naming the filter that accepted or rejected each one.
How to use it
- 1Open the floor plan or engineering plan you want to work on — space separation lines can only be drawn on a plan view, on that view’s own level.
- 2Optionally select a scope box first to restrict the run to one part of the plan.
- 3On the Vixeldorf tab → Space Separator panel, click Space Separator.
- 4Check the context at the top (model, view, level, elevation range), then set up the run: which walls to use and which links to read, the minimum wall height; whether transfer grilles cut gaps, which families and the opening width; and Update (keep earlier corrections) or Rebuild all.
- 5Click Trace Walls. The status line reports lines written, lines replaced, and how many were held back as your edits.
- 6Tick Highlight lines by origin to see where each line came from, and untick it to put the view back as it was.
- 7Place the Spaces as you normally would (Analyze → Space, or Place Spaces Automatically), correct anything by hand, then re-run after the next architectural revision — your corrections stay. Open Log gives the full account of a run.
Reviews & comments
No comments yet — be the first to share your experience.