The main issue is not closed water tanks. That can be a default in OSM.
The issue here is how to inform that a storage_tank is open.
Mind you that there is an infinitude of storage tanks types, but for
firefighting, those are almost exclusively made in concrete and are open
for the reasons I stated before.
In my opinion, the cover=* key is the most adequate in these situations,
because there's no way to define what the roof/coverage of these storage
tanks would be if they had one.
Stating that a an emergency storage tank is covered=no informs that it
can be accessible from above.
If, for example, we state that it has a roof=no, you're defining a
specific kind of covering, when it has none and you have no way to know
if that would be a roof, a tarp, a shed, etc.
Às 07:22 de 12/01/2023, Volker Schmidt escreveu:
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.
>>
>>
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