Playbook
Before Moving a Hanger or Brace
Use before changing rods, straps, trapeze, anchors, seismic braces, or support layout.
What this covers
A hanger/brace is in the way, missing, too short, misaligned, or conflicts with another trade.
How to use this playbook
- Treat supports and seismic bracing as engineered/approved until told otherwise.
- Identify whether it is a normal hanger, trapeze, brace, seismic restraint, equipment support, or temporary support.
- Check approved support drawing/detail if available.
- Check nearby duct weight, insulation, equipment, damper/access, and connection load.
- Measure what changed and why it does not work.
- Take photos showing the whole support path from anchor to duct.
- Ask before moving anchor points, deleting supports, changing brace angle, or increasing spacing.
Check
- Anchor point
- Rod/strap/trapeze
- Duct being supported
- Conflict causing move
Warnings
- Do not remove a support because it is inconvenient.
- Do not move seismic bracing casually.
- Do not use random anchors/hardware.
- Do not leave duct unsupported while solving another conflict.
Stop and ask
- Ask whenever support spacing, anchor type, seismic brace, structural attachment, load path, or trapeze arrangement changes.