A structural column lands inside a low-pressure return duct path
A column in a return duct path is not an apprentice-level field modification. Stop, measure the conflict, protect the opening, and get an approved detail before building around structural concrete or steel.
The return duct path hits a structural column at [grid/location]. I measured [clearances] and checked whether it can shift. Do you want a reroute, split duct, enlarged/shrouded detail, or RFI/detailer direction before we build anything?
Watch out
Do not decide on your own to pierce, flatten, split, or widen duct around a structural column.
Check
Verify the column location against structural and coordination drawings.
Measure available clearance left/right/top/bottom and the duct path before and after the obstruction.
Check whether the duct is return, supply, exhaust, rated, lined, insulated, or pressure-class sensitive.
Look for access, future cleaning/service, and whether another trade can move.
Send photos, measurements, and gridline/location for a detail/RFI decision.
Steps
Verify the column location against structural and coordination drawings.
Measure available clearance left/right/top/bottom and the duct path before and after the obstruction.
Check whether the duct is return, supply, exhaust, rated, lined, insulated, or pressure-class sensitive.
Look for access, future cleaning/service, and whether another trade can move.
Send photos, measurements, and gridline/location for a detail/RFI decision.
Say this to your foreman
The return duct path hits a structural column at [grid/location]. I measured [clearances] and checked whether it can shift. Do you want a reroute, split duct, enlarged/shrouded detail, or RFI/detailer direction before we build anything?