Am 16.02.2015 um 11:32 schrieb Martin Koppenhoefer: > 2015-02-16 4:25 GMT+01:00 Dave Swarthout <[email protected]>: > >> On Mon, Feb 16, 2015 at 4:23 AM, Martin Koppenhoefer < >> [email protected]> wrote: >> >>>> I've been taught that a mast is usually not self supporting, ie. has >>> guy wires while a tower is self supporting. >> >> +1
-1 Usually depends on the construction and height. >> Also, the wiki definition needs changing IMO. Maybe they meant to say, a >> few meters in diameter. >> +1 We have height=*. How to we define the difference between mast and pole ? Do we need support=mast ? > > Thing is that in German we have (slightly) different usage of these terms, > there are the words > > - "Turm" (tower in some cases): typically something accessible by humans > (with stairs, not just a ladder), if its masonry it will always be a > "Turm", while steel lattice could be either, but for power towers, these > will never be called "Turm" in German but "Mast" > > - "Mast" something not accessible (except maintenance by technicians, > typically no stairs but just a ladder), can be guy wired, but doesn't have > to (used e.g. for most technical installations like support for antennas, > street lamps (i.e. also cases where English uses the words "pole", "pylon" > or "rod"), ships, flags, telco wires, power towers, ... > > de:"Mast" is always something tall and thin, while de:"Turm" is always > accessible, but can also be not very high (e.g. defensive towers of ancient > fortifications in some cases). > > The current definition in the wiki almost reflects this German usage 100% > (no wonder, apparently written by a German), but not completely because > there are very high guy wired structures like antennas, e.g. this one would > be called "Mast" in German: > http://en.wikipedia.org/wiki/KVLY-TV_mast > > I think the main difference is that a "Mast" cannot be entered, while a > "Turm" is intended to be entered by humans. Be careful some mast as support for wind generators might be entered. Thought antenna vs mast might be a problem but not mast vs tower. Cheers fly _______________________________________________ Tagging mailing list [email protected] https://lists.openstreetmap.org/listinfo/tagging
