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Apprentice answer

Why is it bad if trapeze rods are bent out of plumb on an angled duct run

2nd YearHangers, Supports & AnchorsCheck first

Threaded rods are meant to hang straight. If they are bent sideways to reach an angled fitting, relocate the anchors or support layout so the rods carry load vertically.

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Plain-English answer

A threaded rod loses reliable load path when it is forced to bend sideways. The hanger may still look tight, but the threads and anchors are being side-loaded instead of carrying weight cleanly.

Move the upper anchors or adjust the trapeze so the rods drop plumb to the actual support points. The duct can be angled; the hanger load path should still be straight and stable.

Ask Foreman

The rods on this angled run are bent out of plumb to reach the trapeze. I think the deck anchors need to move over the true support points. Do you want me to reset the hanger layout?

Verify before acting

Use this as training guidance. Foreman direction, approved drawings, project specs, manufacturer instructions, employer safety policy, and AHJ/code requirements always control the final answer.

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