Talk:Tag:usage=penstock

"human accessible" ??

I am at a loss to understand where "human accessible" is required to define a tunnel. This is not included in the "tunnel" page and defies the majority of tunnel installations and common sense. For instance, a large proportion of sewage and water distribution lines are tunnels. The Wikipedia article seems to define "tunnel" adequately.

Badenk (talk) 03:10, 2 April 2019 (UTC)

We need to distinguish several things here, see chart beside

• tunnel=yes : feature is located in a human accessible/walkable tunnel (road, railway, canal with dry sidewalks)
• tunnel=flooded (or tunnel=culvert on short distances): feature is located in a flooded tunnel that is not accessible in operation and specifically designed to bear huge amount of fluid
• man_made=pipeline : A standard pipeline, which is not a tunnel properly. See here a pipeline crossing a rock-digged tunnel.
• man_made=pipeline + tunnel=yes : a pipeline hosted in a human accessible tunnel like this example.
• man_made=pipeline + tunnel=flooded : A barely standard situation where a pipeline is underwater in a flooded tunnel.

Note that in pretty all situations the tunnel hosts the described features.

See waterway=pressurised for more information. Fanfouer (talk) 11:49, 2 April 2019 (UTC)

"content=water"

Although I cannot see the imperative to change to the "content=water" tag, you forgot to also change three other instances on the "Tag:usage=penstock" page with the depreciated "substance=water" tag. thanks, Baden Badenk (talk) 03:48, 3 August 2020 (UTC)

IMHO from a semantical point of view, content is more likely to be replaced by substance because the last is more figurative than the first implying someting (not necessarily a substance) is contained into something else. Fanfouer (talk) 16:48, 3 August 2020 (UTC)