Rectangular vertical riser

Before you start

• A riser is a load path and a rated assembly at the same time.
• Before anything...
• Stage the needed tools and materials before lifting the section: Riser angles or floor frames per detail, engineered brackets, plumb bob or la....

Lay it out

1. Establish the riser line top to bottom with a plumb bob or laser and mark ...

Set and support it

1. Set and verify the approved supports before the connection is closed. Keep the joint from carrying the weight of the duct or fitting.
2. Use the approved support method for this condition: Riser angles, floor frames or engineered brackets.

Make the connection

1. 1

   Establish the riser line top to bottom with a plumb bob or laser and mark ...