Direct Answer
BIM coordination is the process of combining structural, MEP (mechanical, electrical, plumbing), and architectural models into a federated model and using software to detect conflicts before construction. For a fabricator, it means your Tekla model is exported as IFC and loaded into the coordination model — clashes with ductwork, piping, or concrete are identified and resolved before you cut steel.
Full Explanation
The coordination process typically runs through a BIM manager or VDC coordinator on the GC side. Each trade submits its model at key milestones. Clash detection software (Navisworks, Revizto, or Trimble Connect) runs interference reports. Structural clashes with MEP are the most common: ductwork running through a beam web, pipe penetrating a column, or a conduit rack that requires structural support. Each clash is assigned as an RFI and resolved by design change, MEP reroute, or structural modification.
What This Means for Your Shop
Participating in BIM coordination protects you from field modification costs. If a clash is discovered after steel is erected, it almost always means burning holes in beams or adding field-welded copes — work you do on your own dime. Participating in coordination meetings before IFC shifts the cost to the right party.
Common Mistakes
Delivering your IFC model late to coordination, then fabricating steel before the coordination round is complete. Any MEP clash discovered after fabrication is far more expensive to resolve.
Recommended Process
Deliver your IFC model at 60% completion for preliminary coordination, and again at 90% for final coordination. Attend or have a representative at each coordination meeting. Track all structural RFIs from coordination and confirm they are resolved before IFC package release.