TinnerFlow™3rd YearTrade CoordinationYELLOW · Check First
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.
A radius elbow hitting steel is a coordination and airflow problem, not permission to freestyle the fitting. First prove the conflict: grid, elevation, duct size, elbow direction, and exactly where the beam steals the turning space.
Likely recovery paths include a revised elbow, offset, transition, split duct, shifted run, or an approved square-throat/square-heel elbow with a proper vane/detail if the design allows it. The key is that changing an elbow changes airflow and pressure, so the final call belongs to the foreman/detailer/approved documents.
Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.