Tell someone or document it before you close it up.
Another trade blocks a VAV box, duct drop, or equipment access
Do not reroute in your head. Mark the conflict, take photos, note gridline/elevation, compare the latest drawings, and ask the foreman whether to pause, RFI, or coordinate.
Do not reroute your duct just to keep busy if access, airflow, fire/smoke, or TAB may be affected.
Check
Identify what is blocked: VAV box, damper access, filter/service panel, duct drop, hanger point, or equipment connection.
Confirm the gridline, room, drawing detail, revision date, and elevation if available.
Take a photo showing both your work and the conflict.
Do not cut, reroute, raise/lower, or offset without approval.
Ask for the coordination path: foreman, GC, BIM, RFI, or field sketch.
Steps
Identify what is blocked: VAV box, damper access, filter/service panel, duct drop, hanger point, or equipment connection.
Confirm the gridline, room, drawing detail, revision date, and elevation if available.
Take a photo showing both your work and the conflict.
Do not cut, reroute, raise/lower, or offset without approval.
Ask for the coordination path: foreman, GC, BIM, RFI, or field sketch.
Say this to your foreman
The other trade has their line through our planned VAV/drop/access at grid [ ]. I checked the latest drawing I have. Do you want me to pause this run and get coordination before we reroute?