Hi all, According to this discussion, I tried to update tunnel=flooded and waterway=pressurised to make things more clear.
Feel free to improve if I made any mistake, examples list are always open to add new situations if you find relevant ones. All the best François Le lun. 23 mars 2020 à 01:30, Joseph Eisenberg <joseph.eisenb...@gmail.com> a écrit : > "To me 'tunnel=flooded' means that is cannot really be used for/by > anything other than the fluid in it due to the very small amount of > space left, if any. " > > Yes, that is what I would have guessed, too. > > I would have guessed that a canal tunnel which is passable by boats > would be tunnel=yes, whether or not there is a side-path. > > (This is the problem with proposals that introduce several new tags > all at once. I would have been better to discuss tunnel=flooded > separately, so that this problem would not have occured.) > > -- Joseph Eisenberg > > On 3/23/20, Warin <61sundow...@gmail.com> wrote: > > On 23/3/20 9:08 am, Volker Schmidt wrote: > >> > >> > >> On Sun, 22 Mar 2020 at 19:09, François Lacombe > >> <fl.infosrese...@gmail.com <mailto:fl.infosrese...@gmail.com>> wrote: > >> > >> Hi Volker, > >> ... > >> Fully disposed to make any improvement to wiki according to those > >> points. > >> > >> Thanks, Francois. > >> > >> There is possibly a language bias (error?) in the use of tunnel=flooded. > >> I am not a native speaker, but "flooded" to me means at least "more > >> water than normal", and from this discussion it seems that we are > >> talking about the normal presence of water in these structures. > > > > > > Normal? No I don't think so. Some 'tunnels may be designed only to carry > > water and have no real room for anything else. I am thinking of hydo > > schemes where tunnels are used > > > > To me 'tunnel=flooded' means that is cannot really be used for/by > > anything other than the fluid in it due to the very small amount of > > space left, if any. > > > > Humm ... a smaller description? '"tunnel=flooded' ... full or nearly > > full of fluid so that the tunnel cannot be used for anything else' ??? > > > >> Tag use tunnel=flooded: 2 in the UK, > >> >> Many, if not the majority of the UK Inland Waterways canals have no > >> tow-path. > >> > Then tunnel=flooded is more appropriate. > >> No, definitely not. These tunnels are not "flooded" at all, the water > >> level in them is carefully controlled > >> (The original method of powering the boats in these canals were men > >> laying on their back and "walking" with their feet upwards along the > >> tunnel ceiling. The French canals, being constructed later, generally > >> did have tow-paths also in the tunnels see for example the > >> Tunnel_de_Mauvages > >> < > https://www.google.com/url?sa=i&url=https%3A%2F%2Ffr.wikipedia.org%2Fwiki%2FTunnel_de_Mauvages&psig=AOvVaw3UK-_RmcKBM_5fKTGMZyjW&ust=1584997257128000&source=images&cd=vfe&ved=0CA0QjhxqFwoTCOijlIn9rugCFQAAAAAdAAAAABAS > >. > >> > >> I remember when I was a boy my father showed me the tractors pulling > >> the ships through the old tunnel near Arzwiller in Alsace on the same > >> canal) > >> They are uniformly tagged (correctly) as waterway=canal and tunnel=yes. > >> I mentioned them in the context that tunnel=yes does not imply a > >> tow-path. > >> > >> I had glanced at yourHydropower water supplies proposal, but I think I > >> failed to intervene on three specific points: > >> > >> 1. The first one are the inverted siphons (botte sifone > >> <https://it.wikipedia.org/wiki/Botte_sifone>, pont-siphon > >> <https://fr.wikipedia.org/wiki/Pont-siphon>), which are > >> gravity-pressurised always-water-filled sections of non-navigable > >> canals. I usually map them as culverts, and i have just started to > >> add the new tag culvert=inverted_siphon to the first three of them. > >> 2. The second point is that the distinction between water-filled and > >> part-filled water conducts is problematic: culverts that are > >> frequently used to conduct free-flowing drains, ditches, > >> irrigation canals, freshwater canals under roads can be anything > >> from empry to fully filled (and slightly pressurised) depending on > >> precipitations. > >> 3. waterway=pressurised cannot be used together with waterway=canal > >> for the inverted-siphon situation > >> > >> Volker > >> > > > > > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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