I would say that storage tanks, as default, are closed. So a man_made=storage_tank in OSM is closed. Secondly if a tank is closed (at the top), this is called a roof. There are fixed roofs and floating roofs. See as an example this manufacturer's web site: https://www.wermac.org/equipment/storage_tanks_vessels_general.html So this would translate to roof=yes/no/floating/fixed in OSM speak to indicate that a tank is closed- covered=yes would be correct to indicate an open or closed storage tank under some separate kind of covering structure.
Il giorno gio 12 gen 2023 alle ore 09:28 Warin <61sundow...@gmail.com> ha scritto: > > On 12/1/23 08:28, António Madeira wrote: > > Open tanks are common in wild fires territories, like in Portugal, and > > I'm probably in Spain and Greece. > Not in Australia. > > They're used by helicopters and firefighters, who depend on them in > > heavy mountainous regions, where it's impossible or very difficult to > > get water. > > Helicopters here use rivers, dams, not tank water. > > Firefighting trucks here use tank water, and they have to pump it out > thought a hose to a nozzle, so contaminates can be a problem. > > > We're talking about water tanks of all sizes and formats, some of them > > are really huge, which are only used for fight forest fires, so it > > doesn't matter if they're contaminated. > > For helicopters, they're marked with white and red stripes, so that > > they can be easily spotted from the air. > > Some of them rely on rain water to be filled, but most are refilled by > > firefighters with river water or other sources. > > > Tanks here as a first option take rainwater. If necessary then water > would be trucked in. In remote areas with no population there are no > tanks so trucks would have to suck water from anywhere. In rugged remote > areas there are probably no roads! > > Remote areas here with populations have extremely large tanks for > drinking water... that can be used for fire fighting. Extremely large = > at least a years water supply with no rain fall. > > > > > > > Às 05:54 de 11/01/2023, Warin escreveu: > >> > >> On 10/1/23 03:49, António Madeira wrote: > >>> Greetings. > >>> > >>> There are closed and open storage tanks, and I think is important to > >>> differentiate them, specially those used by firefighters and rural > >>> communities to fight wild fires. > >>> The approved proposal for the key covered=* states "C. denote an > >>> area such as an underground parking lot, a covered reservoir/cistern > >>> or even such things as an aquarium (e.g., Kelly Tarlton's, Auckland, > >>> NZ), when the covering is not a man-made structure that would allow > >>> layer differentiation." > >>> > >>> I would like to know what the community thinks about elaborate that > >>> line a bit more, to include emergency storage tanks so that people > >>> know it's ok to add covered=* to those structures. > >>> > >>> > >> > >> Storage tanks around me are all covered, at least all the one I > >> remember are. This includes ones used or emergency fire fighting. > >> Uncovered ones would be very rare in my country due to the > >> possibility of contamination by drowned animals, dirt, dust, tree > >> leaves and tree limbs. There are probably regulations about them > >> being covered to prevent the breading of mosquitos! So would think > >> covered is part of being a storage tank at least here. > >> > >> > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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