[Tagging] Defacto: man_made=storage_tank

[Martin Koppenhoefer]

> Am 14.04.2015 um 13:05 schrieb fly <lowflight66 at googlemail.com>:
> 
> and not every storage_tank might be a building.


well, this is another question. Strictly, most of them are not buildings, they are almost all structures, but OSM seems not to use this technical distinction. Technically, buildings are a subset of man made structures, built for humans occupancy, btw also under German law (de: Gebäude vs bauliche  Anlagen).

Cheers 
Martin