[Tagging] mast / tower / communication_tower (again)

Graeme Fitzpatrick graemefitz1 at gmail.com
Wed Oct 24 22:03:28 UTC 2018

On Thu, 25 Oct 2018 at 04:03, SelfishSeahorse <selfishseahorse at gmail.com>

> Regarding the unclear man_made=communications_tower tag, nobody wrote
> that she or he is opposed to deprecating it. Do we still need a
> deprecation proposal? (Note that it wasn't introduced by a proposal.)

Just catching back up to OSM & this discussion after a week away.

Do we also need a RFC / vote to amend the wiki page, or can I just amend it
& clear up the bad reference photo's?

I'd be looking at combining the mentioned engineering definition with the
popular opinion expressed here to become:

A mast is a tall, slim structure supported by guys, usually with external
access only

A tower is a tall, slim free-standing structure, usually with internal
access. (Possible include from wiki: "Towers are specifically distinguished
from "buildings <https://en.wikipedia.org/wiki/Building>" in that they are
not built to be habitable but to serve other functions.")

Replacing man_made=communications_tower with man-made=tower;
tower=multi_purpose. Yes they're used for communication in that they have
antennae mounted on them, but are also usually tourist spots with lookouts
& so on, where normal TV towers etc aren't. I'd even suggest a automatic
edit to reclassify them - TagInfo says there are currently ~3700
communications_towers, whereas
https://en.wikipedia.org/wiki/List_of_tallest_towers suggest there should
probably be <100. As mentioned previously, there's currently ~200 of them
tagged in Australia. From checking them at random, it would appear there
should be 1!

Do we need to worry about height for rendering purposes? (which is what
this original discussion started from!) If so, would a simple break-down
into height >30 (m), 30-150, 150+ work?


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