Pressurised waterway preset

[francois.lacombe]

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 hadle this
Let me know if I can help or provide more precise things