A trapeze is clamped to a diagonal joist web member
Do not hang a duct trapeze from a diagonal joist web member unless the structural detail specifically allows it. Move the load to an approved support point.
Do not side-load joist web rods because they are nearby and convenient.
Check
Confirm whether the clamp is on web, chord, beam, or bridging.
Look for bowed web steel or clamp slip.
Check structural notes and hanger detail.
Temporarily support duct before removing the bad hanger.
Coordinate if the approved point conflicts with other trades.
Steps
Confirm whether the clamp is on web, chord, beam, or bridging.
Look for bowed web steel or clamp slip.
Check structural notes and hanger detail.
Temporarily support duct before removing the bad hanger.
Coordinate if the approved point conflicts with other trades.
Say this to your foreman
The trapeze at [location] is clamped to a diagonal open-web joist member and it is bowing. Do you want us to shift to an approved chord/panel point or engineered bridge?