Bkill, you added fire_hydrant:opening to wiki page [0], but you should have 
discussed it here and/or in discussion page before.
We did many efforts to widely discuss fire hydrant extensions [1] and finally 
approve them: you should at least discuss your proposal with people who spent 
so much time in this project.

Anyway, as a firefighter, I have to say that the opening direction is a 
marginal tag for firefighting purposes, because you don't need to know this 
information to choose on a map which hydrant to use to refill the fire engine.
But if you still want to add this information, we need to refine it, for this 
reason discussion is important.

The use of handedness=right / left is prone to error.
Normally on hydrants it is indicated the direction of opening and usually it is 
counterclockwise. But technically these hydrants' valves have right-hand 
threads (right handedness): you turn it clockwise to tighten the valve and 
close the hydrant.
So if you read on a hydrant the counterclockwise opening direction, you should 
tag it with handedness=right. This creates confusion to a normal mapper.

direction=clockwise/counterclockwise has similiar problem: you can intend it as 
the opening direction or as the thread direction (closing direction).

On the other hand, fire_hydrant:opening=cw / ccw is not self-explanatory, 
because someone can intend it as the number of openings (couplings).

Personally I would not add this tag at all.
But, if you still want to add this information, I think that something like:

opening:direction=clockwise / counterclockwise

As we did for most of the tags in [0], I would not use fire_hydrant: prefix 
because we want a slim database and because  opening:direction=* is (or can be) 
used for other objects, as doors, taps, etc.

[0] https://wiki.openstreetmap.org/wiki/Tag:emergency%3Dfire_hydrant
[1] 
https://wiki.openstreetmap.org/wiki/Proposed_features/Fire_Hydrant_Extensions_(part_2)

Best regards,
Alberto


---
Questa e-mail è stata controllata per individuare virus con Avast antivirus.
https://www.avast.com/antivirus


_______________________________________________
Tagging mailing list
Tagging@openstreetmap.org
https://lists.openstreetmap.org/listinfo/tagging

Reply via email to