[Tagging] mapping large memorial objects that roads pass through.

[Joseph Eisenberg]

Back in November and December we discussed this issue, but at a broader level:
https://lists.openstreetmap.org/pipermail/tagging/2018-November/040928.html
https://lists.openstreetmap.org/pipermail/tagging/2018-December/041211.html

I was asking about archways or gateways over the road leading into a
neighborhood, which often have a sign with the neighborhood name in
Indonesia. We considered man_made=gantry (which in general can be used
for any sort of structure than goes over a road) or man_made=archway.

There was also a suggestion to tag some of these structures as a type
of artwork, although this is only sometimes relevant.

Torii gates are a very specific type of gateway, which I believe have
religious or spiritual meaning in Japanese Shinto culture. They also
seem very artistic, but I don't know if they are considered artwork in
Japan?

Perhaps they could be man_made=archway and archway=torii?

A specific tag like man_made=torii will mainly be useful in Japan (and
in a few neighborhoods with Japanese cultural influence around the
world), but a more general tag could be used for similar artistic and
cultural structures in other places. Many Hindu and Buddhist temples
in Southeast Asia have symbolic or artistic gateways at the entrance
to the sacred area, which have a similar role to a torii.

Also, I'm not sure about tagging these as a building. They are large
columns supporting symbolic roof, with no walls, if the example photos
on wikipedia are representative. Perhaps they could be tagged as
"building=roof" however.

On 3/13/19, John Willis via Tagging <tagging at openstreetmap.org> wrote:
> Thanks to Kevin & Volker for the suggestions.
>
> I tagged the object as suggested.
>
> FYI, similar to pedestrian area, the road ignores the layer=* tag and
> OSM/carto renders it badly.
>
> I imagine things like this lead to a lot of tagging for the renderer.
>
> Javbw
>
>
>> On Mar 12, 2019, at 7:38 PM, Volker Schmidt <voschix at gmail.com> wrote:
>>
>> The minimum that is needed is a layer=1 for the torii itself as it is
>> above the road, not at the same level.
>>
>> On Tue, 12 Mar 2019 at 03:34, Kevin Kenny <kevin.b.kenny at gmail.com
>> <mailto:kevin.b.kenny at gmail.com>> wrote:
>> On Mon, Mar 11, 2019 at 10:08 PM John Willis via Tagging
>> <tagging at openstreetmap.org <mailto:tagging at openstreetmap.org>> wrote:
>> >
>> > I understand about tunnel=building_passage for ways that pass through
>> > structures, but there are some objects that roads go "under", similar to
>> > bridges, but are not bridge-like items.
>> >
>> > In my local area, there are two large torii (shinto gates) that public
>> > roads pass through the center of. They are ~ 10m tall and about 10m
>> > wide, and the base poles are on their own landuse - but the public road
>> > and sidewalk go through the m.
>> >
>> > The gate is a monument, and I mapped it as a building=yes &
>> > man_made=torii . I mapped the road and sidewalk as tunnels through it,
>> > but that seems wrong. It is a large object that deserves to be mapped,
>> > but I am unsure how to do it right.
>> >
>> > I assume this comes up with footpaths that go through smaller torii,
>> > archways, trellis’, and other “overhead” structures, but often times
>> > those structures are unmapped.
>>
>> Map the entire footprint of the torii, and then map the section of the
>> road that passes under with covered=yes? That's what I've done for at
>> least one road (that passes under a building that is buit as a bridge
>> over a ravine) https://www.openstreetmap.org/way/478979357
>> <https://www.openstreetmap.org/way/478979357> . It
>> appears to render sensibly, and the tagging makes sense to me.
>>
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