Do not let a cantilevered duct hang off one side of a trapeze and twist the rods.
Check
Check rod plumb and whether the strut is rolling.
Confirm duct weight is centered within the rod span.
Look for off-center hangers pulling the run sideways.
Add support only by approved hanger detail.
Re-level both tiers after correction.
Steps
Check rod plumb and whether the strut is rolling.
Confirm duct weight is centered within the rod span.
Look for off-center hangers pulling the run sideways.
Add support only by approved hanger detail.
Re-level both tiers after correction.
Say this to your foreman
The two-tier trapeze at [location] is twisting because the lower duct is off-center. I checked the rod plumb and load side. Do you want it centered, split, or a third rod added?