Field problem
Verify first
Verify before you commit. Cheap to catch now.
Treat supports as load-path work: not aligning hangers with a straight run.
Treat hangers and supports as load-path work. Verify the support detail, substrate, elevation, and clearance before loading duct.
In Hanger Systems, Rods, Straps, Trapeze & Anchors, I'm looking at: Hangers with a straight run not aligned. What should I verify before I cut, drill, seal, cover, move, or install?