Place hangers in the model and use controls to avoid clashes with other MEP elements.
This video demonstrates the following:
Detailers can use Revit to create a coordinated and constructible model that contains LOD 400 content from the Autodesk Fabrication products. You can add and modify hangers in a fabrication model that includes ductwork, pipework, or electrical containment.
To place a hanger, select a fabrication element and click Show Service to specify the service and group. Select a hanger and place it on a straight segment, or on the straight portion of a fitting extension. By default, hangers attach to the closest structural element, including floor, roof, structural framing (beam or truss), stairs, and slabs categories.
If a structural element is not available, Revit inserts the rod using the rod length specified in the ITM file from the fabrication part catalog.
Revit provides several controls when working with hangers . You can adjust the length of the bearer, as well as the length and position of the hanger rods. For example, when a hanger clashes with the duct above, you may need to adjust the length of the bearer without adjusting the rod. Select the hanger and drag the triangle or bearer end control to lengthen the hanger.
Hangers can also be placed independently without being connected to a fabrication part. For example, you may want to attach a bearer hanger to the structure of another bearer hanger. First, let's adjust the length and position of the existing hanger rod. Select the hanger and drag the circle or rod end control. Next, place a second hanger and specify its elevation. Finally, drag each of the rod ends to reposition and connect them to the bearer of the existing hanger.
Use the Lock/Unlock control when you want to control the relative position of a hanger rod when its host moves. By default, a hanger rod is locked and maintains its relative position with the host. For example, when you move a duct , the hanger rod moves with it. When unlocked, the duct moves independently of the hanger rod, and the rod maintains its relative position on the structure.
Revit lets you quickly and accurately place and modify hangers in a fabrication detailed model.