[Tagging] `amenity=shelter` implies `building=yes`?

[Paul Allen]

On Mon, Jun 18, 2018 at 4:22 PM, Kevin Kenny <kevin.b.kenny+osm at gmail.com>
wrote:

>
>>
> Would it be feasible to say that building=yes is a default (except,
> perhaps, for rock_shelter, sun_shelter) and that mappers are expected to
> place an expected building=no on the exceptions?
>

Tags are not hierarchical, let alone cladistic.  And English usage is
rather fluid.  This leads to anomalies.

Any enclosed space built by man that a person can occupy is, in one sense,
a building.  Anything built by man is, by definition, man made.  And, since
man is a part of nature, anything built by man is also natural (if a beaver
dam is natural artefact then so is the Hoover Dam).  Thankfully, OSM tags
aren't cladistic, or we'd have natural=skyscraper.

That said, most people would classify houses, garages and even sheds as
buildings but exclude bus shelters.

I'd also expect a bus shelter to have, at a minimum, a roof and at least
one wall.  I don't think we need to tag it with covered or roof because if
it doesn't have a roof/canopy it's not a shelter   As in you cannot shelter
from the rain unless it has a roof.

Note also that at one point in time (around 6 months ago) some page in the
wiki I stumbled across said that covered=yes in combination with a bus
platform meant that the platform was underground or something like that.
Which had me hastily remove the covered=yes I'd put on bus shelters because
a few months prior to that something in the wiki implied it was as
necessary as tagging a bench if there was one.

It would be nice if we could sort this out. :)

-- 
Paul
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