Sometimes it is desirable to hide individual layers of a wall while leaving other layers of the same wall visible. For example, when a structural engineer links an architect’s Revit file, the structural engineer may not want to show the rigid insulation, sheathing, masonry veneer and other nonstructural parts of the wall.
It is now possible in the 2012 release of Revit to control the visibility of individual layers of the wall. This can be accomplished by using the new ‘Parts’ tool. After creating parts for each of the layers in a wall, you can hide the layer part (or layer). ‘Parts’ is a new model category in Revit.