<p>You catch them in the model, while the fix is cheap. Run-ins between ducts, conduit and piping usually surface when a crew arrives and finds the space taken. By then it is a change order.</p> <p>BidLight tracks model changes and clashes between revisions, pinned to the elements involved:</p> <ul><li>Publish from Revit or Navisworks. Each publish is a versioned snapshot.</li><li>Compare two revisions and filter to MEP. A rerouted duct or resized pipe shows up as a change.</li><li>Pin the issue to the elements. It carries the sheet and revision that raised it.</li><li>Assign an owner. They see it in the 6am digest.</li><li>Close it only with a screenshot, a tagged user and the linked model commit.</li></ul> <p>A clash caught in the model costs about $50. In the field it costs $5,000 to $50,000. BidLight does not run automated clash detection. It tracks changes and issues so nothing falls between revisions.</p>