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Area Type Rules

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    The following table shows area measurement rules. Rules are determined by one type of space bordering another space. To find the appropriate measurement rule, find the selected Area Type and the corresponding Bordering Area Type.

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    Gross Building Area Scheme Types

    Gross Building Area Scheme Types
    Area Type SelectedBordering Area TypeMeasurement Rule
    Gross Building Area
    Gross Building AreaNone Area Boundary measured to the outside surface of building.
    Gross Building AreaExterior AreaArea Boundary measured from outside surface of building.
    Exterior Area
    Exterior AreaExterior AreaArea Boundary measured from wall centerline.
    Exterior AreaGross Building AreaArea Boundary measured from outside surface of building.

    Rentable Area Scheme Types

    NoteWindows in Rentable Area Scheme Types: If you place windows within the exterior walls, Revit places the area boundary lines according to the following rules based on the height of the windows: If window height is greater than 50% of wall height, area boundary lines go to face of glass. If window height is less than 50% of wall height, area boundary lines go to interior face of the exterior walls.
    Rentable Area Scheme Types
    Area Type SelectedBordering Area TypeMeasurement Rule
    Building Common Area
    Building Common AreaBuilding Common Area, Office, StoreArea Boundary measured from wall centerline.
    Building Common AreaExterior, Major Vertical PenetrationArea Boundary measured from wall face bordering Building Common Area.
    Office Area
    Office AreaBuilding Common Area, Office, StoreArea Boundary measured from wall centerline.
    Office AreaExterior, Major Vertical PenetrationArea Boundary measured from wall face bordering the office area.
    Exterior Area
    Exterior AreaExteriorArea Boundary measured from wall centerline.
    Exterior AreaStoreArea Boundary measured from wall face bordering Exterior Area.
    Exterior AreaAny other areasArea Boundary measured from the wall face bordering the other area.
    Floor Area
    Floor AreaOffice, Store or Building Common AreaArea Boundary measured from wall face bordering other area.
    Floor AreaExterior, Major Vertical PenetrationArea Boundary measured from the wall face bordering the floor area.
    Floor AreaFloor AreaArea Boundary measured from the wall centerline.
    Major Vertical Penetration
    Major Vertical PenetrationMajor Vertical PenetrationArea Boundary measured from the wall centerline.
    Major Vertical PenetrationExteriorArea Boundary measured from the wall face bordering the Major Vertical Penetration area.
    Major Vertical PenetrationAny other area (except Exterior)Area Boundary measured from the wall face bordering the other area.
    Store Area
    Store AreaMajor Vertical Penetration, FloorArea Boundary measured from the wall face bordering the Store area.
    Store AreaExteriorArea Boundary measured from the wall face bordering the Exterior area.
    Store AreaBuilding Common Area, Office, StoreArea Boundary measured from the wall centerline.