Erection Sequence
Route Studio numbers precast walls, columns, beams, HollowCore slabs and foundations along a route you can see and edit.
Number the whole model, the active view or a Revit selection, narrowed by an Advanced Filter with AND/OR rules. Each element is numbered on its own level, floor by floor. Pick a start corner and a direction, drag runs into the order you want, watch the route animate in Revit, and apply the marks in one transaction only after you approve them.
In Revit, the Erection Sequence button still opens the Precast Sequencing window, so the screenshots show that name.
“Sequence walls, columns, beams, hollow-core slabs and foundations. Name from parameters and restart numbering for each Revit type.”
Live demo
Draw the route. Get the marks.
[Category code]-[Type ↻]-[Number]
Example W-PC16-001 → W-PC16-002
Pick a start corner, change the turn direction or open Setup naming rules…, then press ▶ Animate route. Untick Restart numbering on Type to see one counter shared by every type.
In Revit
The real thing
Workflow
How it works
- 1
Choose what to number
Walls, Columns, Beams, HollowCore or Foundations. Your current Revit selection picks the mode for you.
- 2
Set up
Number the elements in the whole model, visible in the active view or selected in Revit, with an optional Advanced Filter (Equals, Not equals, Contains, Starts with on any parameter, combined with AND and OR). Build the name in Setup naming rules… from parts such as Floor number {Level}, Type, Number and any instance or type parameter, each with its own Prefix, Suffix and Separator.
- 3
Shape the route
Set the start corner and turn direction, and for columns and foundations choose Follow the layout or Rows. Then drag rows, reverse runs and merge runs. Undo and Redo cover every edit. Show route in Revit draws it; Animate route plays it one panel at a time.
- 4
Review and apply
Check every proposed mark and its status, resolve duplicates, and apply the marks in one go. A result dialog sums up what changed and can save a CSV report.
Capabilities
What’s inside
Route overlay in Revit
A green→bronze→red ribbon with arrows and sequence numbers is drawn in your view. Nothing is written to the model.
Floors from the elements themselves
Each element’s floor is its own level (base constraint, base level or reference level). Every level with matching elements becomes a floor, routed from the lowest, with counters restarting per floor: 0-PC16-001, 1-PC16-001…
Follow the layout
Columns and foundations can be numbered from the start corner to the nearest stop not yet numbered, keeping their direction, so lines of columns are followed to their end: down one line, up the next. Rows is still available in the Route card. New settings start with Follow the layout; settings saved before it keep Rows.
Your own default name
Save as default in the naming rules stores your own rule, with its start and width, on your computer, and new projects there start with it. The built-in default name is unchanged. Names can include a Type Mark part.
Keep existing marks
Number only new or unmarked panels. Copies get the next number after the highest one of their type.
Erection sequence
Optionally write an erection sequence number as well, restarting on each floor.
Duplicate guard
Proposed marks are checked against the model and loaded links. You can block duplicates, allow them with a warning, or add a suffix.
Numbering history
The last 20 batches are stored in the model. “Check changes since numbering” finds moved, renamed or new unmarked panels.
Safety guarantees
- Analyze, preview and show-route never write to the model
- Marks are written in one transaction, or nothing is written
- Elements with a missing name value are blocked, never named by guesswork
- Saved workflows never apply on their own
Help
Using Erection Sequence
How do I open it?
On the Nexaura Precast tab, in the Sequencing panel, click Erection Sequence. The Precast Sequencing window asks for a mode first: Walls, Columns, Beams, HollowCore or Foundations. Your Revit selection suggests one, but nothing starts until you press Start.
Which parameter receives the marks?
A writable instance text parameter that you choose. Type parameters can be parts of the name in Setup naming rules, but they are never written.
Why do the numbers restart on each floor?
Each element belongs to its own level, and each floor is routed on its own, from the lowest. Counters restart on every floor. Add the Floor number {Level} part to the name in Setup naming rules, or the marks repeat from floor to floor and the LEVEL_TOKEN warning shows. To number one floor, filter on Floor level.
Can I keep the marks that already exist?
Tick Number only new or unmarked panels (keep existing marks). Existing marks stay. Unmarked panels and copies get the next number after the highest one of their type on their floor.
Is anything written before Apply marks?
No. Analysing, previewing and Show route in Revit write nothing to the model. Apply marks writes the marks, and the erection sequence number if you chose one, in one transaction. Closing the window removes the route drawing.
In what order are columns and foundations numbered?
New settings use Follow the layout: from the start corner, each stop goes to the nearest stop not yet numbered, keeping its direction when stops are about equally near. Rows numbers bands within the row tolerance (default 300 mm), each band in the same direction. Switch between them in the Route card; settings saved before Follow the layout keep Rows.
What does Reroute after selected do?
It keeps the route up to and including the selected run and rebuilds every step after it, continuing from that run’s end. Where runs do not touch, such as walls between columns, the next step is the run nearest to where the route stands.
Which HollowCore families are recognised?
Families whose names contain HollowCore or HCS, ignoring case, spaces, hyphens and underscores. Edit the list under What is numbered, in Beams and HollowCore modes.
What about workshared models?
Apply refuses elements that were changed in the central model. Use Reload Latest first, then apply again.