Plumbing is already installed through my duct route
Stop before flattening or rerouting duct around the pipe. Document the clash, confirm the latest coordination drawing, and get direction on pipe relocation, duct reroute, split duct, or engineered transition.
Do not flatten the duct, notch the duct, offset into another trade, or cut around the pipe without approved direction.
Check
Identify the blocking system: plumbing, waste, domestic water, sprinkler, conduit, cable tray, or structure.
Record grid, room, elevation, duct size, pipe size, and direction of conflict.
Check latest coordination/shop drawings, RFIs, addenda, and ceiling height constraints.
Take photos from wide view and close-up with reference marks.
Hold the section if the fix affects airflow, access, rated assemblies, ceiling height, or another trade.
Steps
Identify the blocking system: plumbing, waste, domestic water, sprinkler, conduit, cable tray, or structure.
Record grid, room, elevation, duct size, pipe size, and direction of conflict.
Check latest coordination/shop drawings, RFIs, addenda, and ceiling height constraints.
Take photos from wide view and close-up with reference marks.
Hold the section if the fix affects airflow, access, rated assemblies, ceiling height, or another trade.
Say this to your foreman
Plumbing is already through our duct route at [grid/elevation]. I checked the latest drawings and measured the conflict. Do you want me to hold this section for coordination/RFI, or is there an approved reroute/split/transition direction?