On 20/09/18 21:53, EthnicFood IsGreat wrote:
From: Jonathon Rossi <j...@jonorossi.com>
To: "Tag discussion, strategy and related tools"
<tagging@openstreetmap.org>
Subject: Re: [Tagging] Stormwater outlet into stream
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Thanks everyone. Apologies in advance for the long reply.
@Graeme I see you tagged the node with
man_made=drain_outlet+substance=rainwater. In your example it makes
sense
to map the underground pipe because you know exactly where it is, but
I'd
hate for these to start rendering in the future and bits of incomplete
pipes (a few metres long) start showing up drawing over streets.
The wiki for man_made=pipeline
<https://wiki.openstreetmap.org/wiki/Tag:man_made%3Dpipeline> says it is
meant for "major" pipelines, which these aren't really apply:
By using pipeline are we abusing that tag? Dictionary.com's
definition of
pipeline also indicates that a network of pipes isn't a pipeline. I too
don't view the reticulated water network of pipes a pipeline, however
there
would generally be a pipeline going from a water treatment plant to a
water
reservoir/storage tank; and in the same way the network of sewerage
drains
aren't a pipeline, but you could have a pressurised or gravity
pipeline to
move sewage to a treatment plant.
Mark's suggestion to use man_made=sewer didn't sound right to me
because I
always view sewers as for wastewater which must go to a treatment plant
before entering waterways. Dictionary.com seems to agree, the values for
manhole=* <https://wiki.openstreetmap.org/wiki/Key:manhole> also
agree, this
OSM tagging proposal also agrees
<https://wiki.openstreetmap.org/wiki/Proposed_features/Utility_Schema>,
however Wikipedia seems to indicate some people refer to stormwater
drains
as sewers too, this might be a location thing because I found some
indication that some cities have a combined waste and rain water drain
(these obviously won't directly connect to a waterway).
substance=rainwater;sewage works though.
[...]
FWIW, I worked in the highway construction business for 14 years in
the US. In the industry terminology where I was, a "pipeline"
carrying wastewater to a treatment plant was termed a sanitary sewer,
and a pipeline carrying stormwater (rainwater) was called a storm sewer.
Humm.. I have always take 'sewer' to mean grey water.
The uk Cambridge Dictionary agrees with me.
The uk Oxford Dictionary agrees with you, and give a reference backwards.
I'll have to do some more digging (err pun). In general I go with the
Oxford Dictionary.
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