Thanks fly for this answer. Type=tunnel can suits my needs : let's add all power lines in the relation with role=through. Add tubes or not depends on the tunnel design, not on what's inside. I don't mind. The trick is to link many power lines to a single tunnel.
However, it would be hard to build something in transmission refinement with it since type=tunnel proposal isn't voted yet. Don't we have something more reliable ? Cheers. François Lacombe francois dot lacombe At telecom-bretagne dot eu http://www.infos-reseaux.com 2013/6/4 fly <lowfligh...@googlemail.com>: > On 04.06.2013 00:26, François Lacombe wrote: >> Hi, >> >> I'm currently improving draft of power transmission refinement proposal >> and a question about underground features can't currently find answer. >> http://wiki.openstreetmap.org/wiki/Proposed_features/Power_transmission_refinement >> >> I wonder how we can map power lines underground and infrastructure which >> can host them simultaneously. >> The best example is when several power lines are built in a tunnel like >> on this photo : >> http://www.rte-france.com/webapp/100ansparis/img/chapitre3/img14.jpg >> >> I can create several ways, very close from each other, for all power >> lines we can see and tag them with tunnel=yes but how will I map the >> tunnel ? >> If we only use tunnel=yes on each power line, it's impossible to know if >> they are in the same tunnel or if there is one dedicated tunnel for each. >> >> I think only a relation would solve the problem and it's not a power >> line dedicated question. >> >> Do someone have ever encounter that situation ? > > Mmh, type=tunnel is already in use [1] but it is used for the whole > tunnel, e.g. to combine several tubes and the infrastucture like escape > ways and air-system. > > We could use a tag like tubes= or number_of_tubes= for the relation and > draw the outline. > > fly > > -- > [1] > http://wiki.openstreetmap.org/wiki/Relations/Proposed/Bridges_and_Tunnels > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > http://lists.openstreetmap.org/listinfo/tagging _______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
