TinnerFlow™Why is a multi-tier duct trapeze twisting out of square
2nd YearHangers, Supports & AnchorsCheck first
An off-center lower duct can twist the rods and strut. Rebalance the load or add an approved support rod on the heavy side.
Plain-English answer
A two-tier trapeze needs the load carried inside the rod span. If one line hangs far off to one side, the whole assembly becomes a lever.
Check the load center, rod plumb, strut rotation, and duct clearances. Recovery may be re-centering the lower duct, adding a third rod, splitting the support, or building a separate trapeze.
Ask 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?
Verify before acting
Use this as training guidance. Foreman direction, approved drawings, project specs, manufacturer instructions, employer safety policy, and AHJ/code requirements always control the final answer.
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