[Tagging] waterway=penstock to complete pipeline tagging

Fran├žois Lacombe fl.infosreseaux at gmail.com
Fri Oct 9 14:59:39 UTC 2015

Hi everyone,

2015-10-07 1:02 GMT+02:00 Warin <61sundowner at gmail.com>:
> I'd like to think anything carrying waste water (sewer) would have a non
> permeable lining.. and that lining could be called a 'pipe' and thus it is a
> 'pipeline'.
> To me the 'tubes' in my house for carrying water/gas are pipes .. and as
> they are a line then they are pipelines!

I'd like to consider the pipeline is almost replacable by its operator.
A tunnel, furthermore when it's shielded, carrying water isn't
replacable at all and its components aren't pipes at all.

Digging rock to get a tunnel is a lot heavier than installing a
pipeline. It doesn't have the same environmental footprint too.

Ok to say that sewerage facilities are almost pipelines, but
sometimes, they are drains or tunnel.

2015-10-09 16:28 GMT+02:00 Bryce Nesbitt <bryce2 at obviously.com>:
> The problem with man_made + waterway on the same node, is both are top level
> tags.
> Here you'd want a refinement tag for pipeline.

I prefer to say that both man_made=pipeline and waterway=* can be
standalone to have a meaning instead of the "top level" expression.

The extension I propose (I'm not refining any existing values here)
isn't only focused on pipeline but on tunnels too.
Due to the reasons we talked this week it shouldn't only concern pipelines.

> --
> There are two valid but separate goals to keep in mind.  Are you mapping
> the:
> * Visible surface features
> * The flow of material
> Both are valid mapping goals.  For mapping the flow you want a continuous
> link of
> tags that imply water flow.  That penstock comes from a reservoir or weir,
> passes through a generating station, and exits into a canal which dumps into
> a river
> or a sink.  That flow could be one way or in the case of storage reservoirs
> two ways (pumped
> uphill at low demand times).
> Equally valid is mapping the surface expression only.  Those are pipes
> sticking up out of the ground (a man made feature).

I would like to map the visible surface features : man_made=pipeline
ONLY when the penstock is visible and composed of pipes
AND I would like to map the flow of material with waterway=penstock at
the same time.

A penstock may be a pipeline but water is always flowing inside isn't it ?


Fran├žois Lacombe

fl dot infosreseaux At gmail dot com

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