[Tagging] Uses of parts of buildings

[John Sturdy]

On Wed, Sep 26, 2012 at 12:22 PM, Martin Vonwald (imagic)
<imagic.osm at gmail.com> wrote:
> Hi,
>
> A quick question how you would tag this:
> * one building (looks from the outside mostly like a residential building)
> * the building is used for three different things: an office, a riding ground (just assume it's a pitch) and a stable.
> * the building is not separated - it's just one building
> * I'm not interested in the detail- tagging, just how you would tag three different uses.
>
> My idea right now is:
> * building=yes for the whole building. Or should it be residential?
> * for each part draw a separate polygon and tag with building:use=whatever.
>
> What I'm missing here is the connection between the building and its parts. So I thought I could use the 3D-extensions for this, namely building:parts=yes on the main polygon and building:part=yes on the parts.

You'd certainly need 3D for many such buildings, as flats / apartments
over shops are quite common; the different uses will be in the same 2D
location.

__John