Translations:Manual:BIM modeling/27/en


 * Set the Working Plane to XY plane
 * Create a [[Image:Draft_Rectangle.svg|16px]] rectangle with a length of 5m, a height of 4m, and place it at position x:-0.5m, y:-0.5m, z:0.
 * Select the rectangle
 * Click the [[Image:Arch_Structure.svg|16px]] structure tool to create a slab from the rectangle
 * Set the height property of the slab to 0.2m and its normal direction to (0,0,-1) because we want it to extrude downwards. We could also simply have moved it 0.2m down, but it is always good practice to keep extruded objects at the same place as their base profile.
 * Set the Role property of the slab to slab. This is not necessary in FreeCAD, but is important for IFC export, as it will ensure that the object is exported with the correct IFC type.