Page 147 - Revit Architecture Basics

Enhanced detailing – Walls

Function

Each layer in the wall are assigned a specific function, so that the layer can be assembled
correctly when it meets a layer of same type. The functions are divided into priorities.
The layers will be composed with other walls according to priorities. Lowest number has the
highest priority. Revit will then take the first priorities and put together these, then other
priorities.
Example:
Two walls meet in a corner. Layer with priority 1 is assembled with layer of corresponding
priority in the second wall.
Highest priority pass through layers of lower priority, and layer with priority 2 can not pass
through layers with priority 1.

Function Priority Information
Structure [1] Layers, which form part of the load-bearing part of
the wall – supports other walls, slabs or roof.
Substrate [2] Materials such as plywood or plasterboard — layer
that forms the base for other materials.
Thermal/Air Layer [3] Layer for insulation and cavity.

Membrane A layer to selection of a membrane in the wall.
Layer has always 0mm in thickness.

Finish 1 [4] This is typically intended for final exterior layer.
Finish 2 [5] This is typically intended for final non-load bearing
interior layers.

There are two locked fields that are predefined. They are called "Core Boundary" and forms the
setting for the core of the wall. The core is thought to be the main part of the wall. In Revit
Architecture can Core Boundaries just as easily contain insulation. The other layers will create a
Wrap (packaging) around this layer.
Layers that exist inside the core of the wall will have an even higher priority than other layers in
the walls. If there are joints between walls, layers in the Core will go through other layers
outside the Core, even if core layer is set to the lowest priority 5.

 NTI 147