Key:building:floor_area
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 building:floor_area
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| Description |
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Sum of all the floor areas on a building, by default in square meters 
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| Group: buildings |
| Used on these elements |
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| Requires |
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building=* or building:part=* |
| Status: de facto |
| Tools for this tag |
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A building:floor_area=* tag key is used to define the total floor area (sum of floor areas on the whole building) and serves to analyze space available inside a building. By default, it is in squared meters. This is most of the time different from building area, since it will include the space available on each floor and should substract holes and split-level empty spaces from the total.