Just a little more info on how we use Assembly Codes here in Holland after the bit I explained during the session.
We have a system called SfB-code, which was first made by some Swedish committee back in 1947 and was adjusted for the Dutch market in 1990 and I assume more European countries use something similar. What this does is give every object in a building a 4 digit code ##.##.
The first 2 tell you something about what object it is. For example 21 is interior walls, 22 is exterior walls, 31 is exterior wall openings (doors and windows), 44 are stairs and so on.
The second 2 numbers tell you more about what type of object it is. In the case of interior walls we have
.10 for general none structural walls
.11 for none structural solid walls
.12 for none structural multi layer walls
.13 for none structural fixed panel walls
.14 for none structural movable panel walls
etc.
So you will have 21.11 as the Assembly Code for an interior none structural solid wall
These numbers were already used in AutoCAD as part of the name of a layer and it helps in Revit (or Navisworks or Solibi) to quickly filter out objects.
Long list of each code can be found here:
http://www.modelleerafspraken.nl/index.php/bijlagen/bijlage-nl-sfb-4-cijfers
website: www.deurloobm.nl