On 15-Feb-18 08:41 AM, François Lacombe wrote:
2018-02-14 22:20 GMT+01:00 Warin <61sundow...@gmail.com <mailto:61sundow...@gmail.com>>:



    If this is dual tagged with man_made=pipeline then it would be
    better as a property tag as Martin suggests.


What do you mean with "dual tagged" ?
Having two main tags... when it is  pipe and tagged man_made=pipeline the suggestion/proposal is to add an additional main tag waterway=*

Getting tired of searching for the proposal .. here is a link .. https://wiki.openstreetmap.org/wiki/Proposed_features/Hydropower_water_supplies

    In this way the pipeline tag can also use the property
    'pressurised' .. and that property could be expanded to include
    numbers.


The tag pressure=* is here for that, the value can be given in bar
https://wiki.openstreetmap.org/wiki/Key:pressure

This is pretty easy to get this value for a penstock : pressure = (elev up - elev down) / 10 in bar

Are all of these these proposed waterway=pressurised in pipes?

You can gather I find the proposal confusing...

Talk of canals  and .. they are not part of this?


If these are all pipes .. then waterway=pipe would be a good description, use pressure=* as a tag for the pressure.

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