**Slab** | S | IfcSlab | GeometricGoo |

**Width** | w | Nominal width (or thickness) of the slab. Only given, if the slab is prismatic (constant thickess). | Number |

**Length** | L | Length (one direction of the non-projected foot print area) of the slab. It shall only be provided, if the slab is rectangular. | Number |

**Depth** | S | Depth (one direction of the non-projected foot print area) of the slab. It shall only be provided, if the slab is rectangular. | Number |

**Perimeter** | P | Perimeter measured along the outer boundaries of the slab. Only given, if the slab is prismatic (constant thickness). | Number |

**GrossArea** | G | Total area of the extruded area of the slab. Openings, recesses and projections are not taken into account. Only given, if the slab is prismatic. | Number |

**NetArea** | N | Total area of the extruded area of the slab. Openings and recesses are taken into account by subtraction, projections by addition. Only given, if the slab is prismatic. | Number |

**GrossVolume** | V | Total gross volume of the slab. Openings, recesses, and projections are not taken into account. | Number |

**NetVolume** | V | Total net volume of the slab. Openings and recesses are taken into account by subtraction, projections by addition. | Number |

**GrossWeight** | W | Total gross weight of the slab without add-on parts, not taking into account possible processing features (cut-out's, etc.) or openings and recesses. | Number |

**NetWeight** | W | Total net weight of the slab without add-on parts, taking into account possible processing features (cut-out's, etc.) or openings and recesses. | Number |