id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
16147	Pressurised waterway preset	francois.lacombe	team	"Recently, waterway=pressurised was reviewed on osm wiki, encouraging the use of waterway=* key to map not only free space but pipe flow waterway features also.
https://wiki.openstreetmap.org/wiki/Tag:waterway%3Dpressurised

Waterway presets should be updated and get new entries as follow :
==Penstock==
* `waterway=pressurised`
* `man_made=pipeline`
* `substance=water`
* `location={underground,overground}`
* `usage=penstock`
* `name=*`
* `operator=*`
* `diameter=*`
* `material=*`

==Pipe flow tunnel==
* waterway=pressurised
* usage={headrace,tailrace,transmission,irrigation}
* location=underground
* tunnel=flooded
* name=*
* operator=*

==Canal preset should be updated as follow==
* `tunnel={culvert,flooded}`
* `usage={transportation,transmission,irrigation,headrace,tailrace}`


Main validation rules :
* `usage=penstock` requires `man_made=pipeline` and `waterway=pressurised`
* `tunnel=yes` and `waterway=pressurised` requires `man_made=pipeline`
* `tunnel=flooded` is highly improbable with `man_made=pipeline`
* `waterway=canal` shouldn't be used with `tunnel=yes`
* `waterway=pressurised` requires `tunnel=flooded` or `man_made=pipeline`

Render I'd suggest :
* `waterway=pressurised` + `tunnel=*` => add grey 1px casing to existing waterway line
* `waterway=pressurised` + `man_made=pipeline` => add ""pipeline color"" 1px casing to existing waterway line

I know it's huge and you may have a lot of undergoing business, it would be great to handle this
Let me know if I can help or provide more precise things "	enhancement	new	normal	18.06	Internal preset			waterway, pressurised, tunnel, pipeline