Static field route #19337

What do I do when flex or duct is tied to ceiling grid wire?

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📖 Verified core answer

No. Ceiling grid wire is not duct support. Remove the tie and hang the duct independently from approved structure.

Field verification checklist

Find every place duct/flex is tied to ceiling grid wire.
Remove load from the grid before cutting ties.
Install independent support from structure.
Check flex shape and diffuser alignment after re-supporting.
Tell foreman if ceiling grid has been bent or overloaded.

Ask foreman

The duct/flex at [location] is tied to acoustic ceiling grid wire. I stopped using the grid for support. Do you want independent supports dropped from structure before ceiling close?

Text to foreman

Route options

AMake the field correction only if it is within your assignment and the approved method.

BHold and document the condition if the fix affects support load path, structural steel, seismic restraint, life safety, another trade, or inspection.

CBring the foreman/detailer the location, what you checked, and what decision you need before loading, cover, startup, or rework.

Do not do this

Do not hang mechanical ductwork from ceiling grid wires.

Why this matters

Grid wires are not rated for duct load and can create ceiling failure, inspection issues, and unsafe overhead conditions.

Final verification

Use this as field training guidance. Final direction still comes from the foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, structural/seismic detail, and AHJ/code requirements.

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