Not locking nuts after final elevation

Treat supports as load-path work: not locking nuts after final elevation.

Finish hanger hardware so it stays adjusted. Loose or missing nuts/washers can let the support move after vibration or ceiling work.

Hangers, Supports, Rods & Trapeze 2nd Year YELLOW

Stop if

Ask before moving anchors, changing spacing, deleting supports, drilling structure, or altering trapeze/seismic layout.

Watch out

Do not leave a support half-assembled because it is holding for now.

Check

Check washers/nuts
Jam/lock as required by shop practice
Verify final elevation

Steps

Identify the support type and duct being carried.
Check approved detail or foreman direction.
Verify anchor/hardware and attachment point.
Focus on the actual issue: not locking nuts after final elevation.
Photograph or mark the condition if someone else needs to approve it.

Say this to your foreman

In Hanger Systems, Rods, Straps, Trapeze & Anchors, I'm looking at: Not locking nuts after final elevation. What should I verify before I cut, drill, seal, cover, move, or install?

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