Catch the drift while it's cheap.
Fade the coordination model over the same vantage point in the walk. Ductwork that landed 200 mm low reads as a measured mismatch on a dated frame — weeks before the ceiling closes over it and years before somebody argues about it.
What it does
The federated model is aligned to the walk once per level; every later walk inherits that alignment. Slide the opacity and the ceiling void tells both stories at once — what Rev C said would be there, and what the trades actually hung.
Deviations come out measured, not eyeballed: a hanger 200 mm low, a sleeve 1.4 m off station, a wall 75 mm into the corridor. Each one carries the frame, the date, the level, the grid reference and the model element it disagrees with, so the conversation starts at evidence instead of at blame.
How it works
- 01
Align once
The federated model is registered to the first walk on that level — IFC, RVT or NWD. Later walks reuse the registration, so nothing gets re-surveyed and nothing drifts because someone moved a reference.
- 02
Compare the revision
Each walk is read against the issued revision current on the day it was captured. Elements that moved between revisions are compared with what was actually built, not with a sheet that has since been superseded.
- 03
Flag the delta
Differences past your tolerance are listed with a measurement, a frame and the element they belong to. Send one straight to an RFI or a punch item without leaving the view.
Spec
- MODEL IN
- IFC · RVT · NWD
- TOLERANCE
- PER TRADE · 25 MM MIN
- COMPARE
- REV C VS BUILT
- ALIGNMENT
- ONCE PER LEVEL
25 mm
Smallest deviation flagged by default