[Tagging] Masts vs Towers yet again

Malcolm Herring malcolm.herring at btinternet.com
Fri Apr 15 09:49:44 UTC 2016

This is a continuation of a discussion started in the devel list. The 
issue is the definitions of "tower" and "mast".

The two terms are used interchangeably in both UK & US english, 
resulting in a lack of consensus for tagging.

Perhaps we should define a "for use in OSM tagging" definitions of these 
terms, simply to fix a convention. I will try a proposal:

Tower: Any free-standing structure of high vertical aspect ratio that 
has some kind of accommodation within it (observation decks, 
restaurants, offices, apartments, etc)

Mast: Any structure of high vertical aspect ratio that has no 
accommodation (apart from service access), commonly used for 
communications purposes & may or may not be free-standing.

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