2016-02-18 11:40 GMT+01:00 Marc Gemis <marc.ge...@gmail.com>: > I would like to see something > > "When the structure is fastened with guy wires, you can map it as > mast. It is not a tower in this case". >
this is not completely clear, it seems that there are some towers that are fastened with guy wires. E.g. https://en.wikipedia.org/wiki/Tower_of_Unity#/media/File:Turm_der_Einheit_01.jpg This clearly isn't a mast (or is it?) > "When the structure is made from steel or concrete, it is not a tower, > it could be a mast though" (maybe not the best example). > yes, clearly not the best example ;-) It's quite obvious that "steel and concrete" can be safely removed from the definition, as almost any structure is made of concrete or steel (or wood or masonry), and while a masonry mast likely doesn't exist (a chimney isn't a mast I think), wooden masts are probably common as well (or are they all called "pole" then, and the mast is used only in nautical context?). Cheers, Martin
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