Am Do., 25. Okt. 2018 um 11:08 Uhr schrieb SelfishSeahorse < selfishseaho...@gmail.com>:
> > As i've written in my previous message, guy-wires are used to > stabilise tall masts. Therefore the absence of guy-wires doesn't imply > that it's a tower. > +1 > I'd leave the current definition as is, just adding that usually tall > masts are guyed but towers aren't. > I would not concentrate on the "guyed" part in the definitions, it depends whose definition you use, and it isn't so relevant (IMHO). > > > A tower is a tall, slim free-standing structure, usually with internal > access. (Possible include from wiki: "Towers are specifically distinguished > from "buildings" in that they are not built to be habitable but to serve > other functions.") > a tower may not have an "internal" space (in the sense of closed space). > > Cooling towers or defensive towers aren't slim, but are still towers. > They can be slim. Especially "cooling towers" are a different beast than most of the other towers, and I would not tag them as a subtype of tower, but rather with their own tag man_made=cooling_tower (which btw. is also done for a long time, although it is not the only option, currently). > And garages or office buildings aren't built to be habitable, but are > still buildings. (I think it's fine to call a tower a building if it's > closed, that is, has walls and a roof.) > there is no definition that requires being habitable for a building. > > > 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. > Imho, multi purpose is too broad. +1, it basically says nothing more than more than one usage. Looking closely, many/most towers might be seen as "multi purpose" (radio AND tv?), it would rather reduce usefulness of our data than improve it. Cheers, Martin
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