<div dir="ltr">Ok thanks for the input and ideas. <div>The areas in my region are part of the "grondbank", which is probably best translated as 'soil exchange'. It's not comparable to a pile or pit of salt next to a road, in case it's needed for the road. </div><div><br></div><div>I guess landuse=industrial best describes the exchange activities, even though no industries or companies are involved, nothing is fabricated and it's all non-commercial. It's more like a logistics operation. The terrains are dedicated, long-term, and fenced. </div><div><br></div><div>Industrial=warehouse, that's a step too far for me, and the type of storage used or the exact contents of the piles is not my concern. Just tagging the duck.</div><div><br></div><div>Out of all the industrial=* values, depot fits best, but it's tainted by a previous proposal which said that depot is about vehicles and such. So I have to come up with a new one. I think industrial=soil_exchange would tag the duck. </div><div><br></div><div>Probably there is a better term than soil, one that also may include sand and gravel. </div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">Vr gr Peter Elderson</div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Op di 18 mei 2021 om 21:43 schreef Bert -Araali- Van Opstal <<a href="mailto:bert.araali.afritastic@gmail.com">bert.araali.afritastic@gmail.com</a>>:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<div>On 18/05/2021 17:53, Peter Elderson
wrote:<br>
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<div dir="ltr">Bert -Araali- Van Opstal <<a href="mailto:bert.araali.afritastic@gmail.com" target="_blank">bert.araali.afritastic@gmail.com</a>>:<br>
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<p><font face="Verdana">I tag them as man_made=bunker_silo
(<a href="https://wiki.openstreetmap.org/wiki/Tag:man_made%3Dbunker_silo" target="_blank">https://wiki.openstreetmap.org/wiki/Tag:man_made%3Dbunker_silo</a>)
and content=* (values like sand, gravel, salt etc...)</font> </p>
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<p><font face="Verdana">Combine with landuse=commercial
for the ones at depots for sale or landuse=industrial
or landuse=construction for the piles not for sale to
the general public. <br>
I know the wiki says these are for agriculture but
it's easy to extend (wiki) for other purposes. Bunker
silos don't necessarily have 3 walls to contain the
bulk material, as in your example I can't recognise
any but essentially they are the same thing and serve
the same purpose. Some have ditches around them or are
pits, with the same purpose of containment and
additionally collecting run-off in wet conditions. <br>
Introducing another landuse or man_made tag seems
ambiguous to me, especially using stockpile as some
might be empty short or long term and then it would be
to be defined as a pile or stock_pile.<br>
Using the man_made tag is easy as they can be easily
mapped and incorporated in all kinds of larger
facilties let it be depots, factories, hardware
stores, construction sites or just along roads as
maintenance stock depots.</font></p>
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<div>Bunker silo could be stretched to include these piles of
bulk material. But they are formed on the terrain as needed,
for different bulk materials. So I can't pinpoint and tag
individual bunker silo's, and I can't tag the contents.
That's not necessarily a problem, but again, stretching
thngs. <br>
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Sure but you could contain all the piles into one area or apply it
to the containing polygon which might have a landuse. It allows for
any level of detail as you are able or willing to apply. In many
cases, like f.i. for hazardous materials, a watertight seal is
applied to the surface, with different piles, sometimes different
materials all stored on the same slab. Some have water catchment
drains around it. All of this can be mapped with existent tags, like
surface=concrete etc... without becoming specific about the
individual piles or their contents. Just dependent on your
preference for level of detail and local knowledge.
man_made=bunker_silo is been used 32 234 x, both in agriculture as
in industrial or commercial use.<br>
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<div>As for the landuse, it's not commercial or industrial,
and the land itself is not a construction site. Maybe
industrial could be stretched to include </div>
<div>common storage for various bulk materials for various
current and future municipal projects in the municipal area?
<br>
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In your specific case it's not, but these piles appear on all kinds
of different landuse. So it seams obvious to me not to use or create
a new landuse value for such a specific case as we would end up with
landuse=somethingnew overlapping or puzzled into other landuses,
either on macro or micro scale. For your specific case it seems to
me landuse=industrial is the most feasible. Don't use
landuse=depot. Since last year (253 uses so far) the
industrial=storage tag is used, even discussed briefly on <a href="https://wiki.openstreetmap.org/wiki/Talk:Key:industrial" target="_blank">https://wiki.openstreetmap.org/wiki/Talk:Key:industrial</a>.
It is meant to distinguish warehouses which are considered in most
cases as storage in buildings, from open air storage. Not documented
yet but in use for similar cases.<br>
<p>So I would suggest a general tagging as:</p>
<p>landuse=industrial, (other landuses are possible but not combined
with industrial=*)<br>
industrial=storage</p>
<p>Add additional attributes if known like:<br>
content=* (could be multiple ; separated values or a group name
like road construction bulk material...)<br>
man_made=bunker_silo could be optional but I would recommend it
for uniformity in any case for such an area even if it has no
special storage provisions for reasons that it is easy to
recognise even if the pile is "used up" and underlying soil might
be contaminated. This allows it to be used also for smaller
stockpiles f.i. gravel stocks for use in winter in mountainous
areas, stockpiles of clay gravel mixes to repair potholes like
often seen in Africa along roads etc... By the way it even
renders fine in carto (darker pink), but we don't map for the...<br>
owner=*, operator=* etc....</p>
<p>If you have the information or field survey smaller areas and
details can be provided on overlapping areas or polygons which are
tagged with:</p>
<p>if the area contains a floor use surface=*,<br>
wall, retaining wall or dyke for containment<br>
ditches</p>
<p>The man_made=mound (1298 uses) is also in use but not documented
and very locally used mostly in Turkey. Could be considered as an
alternative if no provisions at all are present. I prefer to use a
single tagging scheme for the same feature so don't recommend it's
use.<br>
</p>
<p>In these cases the man_made=bunker_silo should be applied to the
detailed area, not the containing landuse.<br>
See an example of such a pile next to a major road in Africa here:
<a href="https://www.openstreetmap.org/#map=19/0.09120/32.49531" target="_blank">https://www.openstreetmap.org/#map=19/0.09120/32.49531</a><br>
</p>
<p>Greetings,</p>
<p><br>
</p>
<p>Bert Araali<br>
</p>
<p><br>
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