I've updated the language on the waterway=pressurised page to use standard English syntax, and to clarify that these are artificial tunnels or pipelines, in the short description.
This was already somewhat clear from the full description, and from the proposal where waterway=pressurised was described as "tag [for] any pipe flow feature like water tunnels, penstocks and siphons where water flows without any air. " New short description: "An artificial tunnel or pipeline where water flows in a closed space without air" New long description: "This key is intended to map artificial conduits where water is found pipe flowing in a closed space without air. As water is filling all space available in the conduit, it applies a positive static pressure on the conduit walls. "The conduit can be either a pipeline or a tunnel. This is specified by adding man_made=pipeline or tunnel=* to the way tagged waterway=pressurised." "A "pipe flow regime" is one of the three main flow regimes of liquid water. This regime is obtained by design when the intake of the conduit is built below the lowest water level the source can reach. This is the only use case of waterway=pressurised."" I removed the reference to natural caves, because it conflicted with the last paragraph which says "This regime is obtained by design when the intake of the conduit is built below the lowest water level the source can reach" - clearly natural caves are not designed or built in the usual sense. The original proposal page had a brief mention of caves but said - confusingly - that this usage was "out of scope" of the proposal: "it may be useful for speleologists and natural underground rivers/siphons out of this proposal scope." _______________________________________________ Tagging mailing list [email protected] https://lists.openstreetmap.org/listinfo/tagging
