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When uploading the 3D model to HEGIAS, your model is analyzed and made available for virtual reality. During this process, the geometry is divided into the following categories:

Floors
Walls
Ceilings
Windows / glass
Stairs
Others

In order for the geometry to be assigned to a category, it must already be correctly marked in the CAD / 3D program. The assignment is done according to the geometry names and works in German, English and Italian. 

The recognition can also be deactivated in the advanced options of the[ HEGIAS VR Import.](/en/article/import-a-scene-to-the-hegias-platform-18p37ao/)



The following section explains the different categories and their functions. 

1. Floors
Floors are the most important category and there should be at least one Floor in each model. The following functions are only possible on floors:
Teleport
Place standing furniture (e.g. chairs)

The following keywords are recognized as floors:
floor
slab
storey
covering
footing
landing
boden
decke
podest
fläche
pavimento


2. Walls
The following functions are only possible on walls:
Place attached furniture (e.g. pictures).

The following keywords are recognized as walls:
wall
column
wand
mauer
stütze
muro
parete


3. Ceilings
The following functions are only possible on ceilings:
Place hanging furniture (e.g. lamps).

The following keywords are recognized as Ceilings:
ceiling
roof
dach
soffitto


4. Glass
We recognize windows and glass elements and assign them a corresponding glass material.

The following keywords are recognized as Glass:
glass
window
fenster
verre
vetro
finestra
infisso


5. Stairs
Stair elements act like floors, except that furniture cannot be placed on them. Without correctly classified stairs, it is difficult to move in multi-story buildings. 

The following keywords are recognized as Stairs:
stair
tread
riser
ramp
treppe
stufe
podest
lauf
site
scala


6. Others
This category includes all objects that have not been assigned to any other category. These objects are displayed normally but have no special features.
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