Rectangular duct with companion angle

Before you start

• Companion angle means high pressure or special service.
• You do not field-gues...
• Stage the needed tools and materials before lifting the section: Companion angle iron per detail, bolts/nuts/washers per bolt schedule, specif....

Lay it out

1. Check both angle frames square to the duct end with a framing square. An a...

Set and support it

1. Check both angle frames square to the duct end with a framing square. An a...
2. Use the approved support method for this condition: Heavy trapeze or engineered structural support.

Make the connection

1. 1

   Check both angle frames square to the duct end with a framing square. An a...