Do not smash, flatten, or force the radius elbow into the beam. Verify the conflict location, measure the available space, then bring the foreman/detailer real options before changing the fitting shape.
The radius elbow at [grid/elevation] hits the beam by about [amount]. I checked the latest drawing and measured the available turn space. Do you want a revised elbow, offset/transition, split route, or approved square elbow/vane detail before I install it?
Watch out
Do not flatten, notch, smash, or change the elbow type on your own just to make the duct fit around steel.
Check
Confirm the latest drawing, detail, and revision for that run.
Measure the beam location, duct size, available throat/heel space, and downstream equipment served.
Check whether the conflict is structure, hanger elevation, wrong fitting, wrong layout, or missed coordination.
Take a wide photo and a close photo with grid/elevation marked.
Bring options instead of guessing: revised elbow, offset, transition, split duct, or approved vane detail.
Steps
Confirm the latest drawing, detail, and revision for that run.
Measure the beam location, duct size, available throat/heel space, and downstream equipment served.
Check whether the conflict is structure, hanger elevation, wrong fitting, wrong layout, or missed coordination.
Take a wide photo and a close photo with grid/elevation marked.
Bring options instead of guessing: revised elbow, offset, transition, split duct, or approved vane detail.
Say this to your foreman
The radius elbow at [grid/elevation] hits the beam by about [amount]. I checked the latest drawing and measured the available turn space. Do you want a revised elbow, offset/transition, split route, or approved square elbow/vane detail before I install it?