Apprentice question
Field check
Standard work. Do it right, keep moving.
Hold-downs should secure the duct, not deform it. Back off the clamps, add approved isolation/cushioning, and re-secure without crushing the metal.
['A trapeze clamp that dents the duct or flange is too tight or missing a protective pad. It can open corners, distort joints, and create noise.', 'Loosen the hardware, inspect the flange/corner, add approved cushion or bearing material, and tighten only enough to restrain movement without changing duct shape.']