Do not move seismic/sway bracing casually: missing brace at duct riser/vertical run.
High-risk starter answer - stop before you change, move, drill, or attach anything tied to seismic bracing, sway control, structural support, crane work, or rigging. Verify the approved detail and the qualified person's direction before acting. If a run or equipment connection appears to be missing restraint, flag it instead of adding a random brace.
Ask whenever brace location, anchor, angle, attachment, or clearance changes.
Watch out
Do not modify or copy bracing/rigging from another area just because it looks similar.
Check
Identify whether you are looking at a hanger, brace, restraint, anchor, insert, structural member, rigging gear, or crane/lift-day zone.
Mark the location, take a photo, and ask whether restraint is required at that run, riser, or equipment connection.
Steps
Identify whether it is a hanger, brace, restraint, or structural attachment.
Check seismic/coordination drawing if available.
Photograph full load path from duct to structure.
Focus on the actual issue: missing brace at duct riser/vertical run.
Photograph or mark the condition if someone else needs to approve it.
Say this to your foreman
In Seismic Bracing, Sway Control & Structural Coordination, I'm looking at: Missing brace at duct riser/vertical run. What should I verify before I cut, drill, seal, cover, move, or install?