[Tagging] Concrete vs concrete:plates should we simplify?

[Evan Carroll]

> I am always suspicious when someone thinks they know how
a particular material is laid all over the world, while
claiming not to be an expert on the subject and without
having at home what they propose to depreciate.

You shouldn't be suspicious. I see an option on StreetComplete, I ask
there. Then I ask on the official QA site. Then I come here to tell you 90%
of the advice I've got is wrong. It sounds like you're in the strictly
pre-fabricated (ie., built off-site) camp, if so then here is a list of
people that got this wrong. BTW, I have poured concrete. It's just not what
I do for a living or professionally.


   - https://help.openstreetmap.org/answer_link/85525/ "clearly see the
   plates and the regular gaps in between"


   - https://help.openstreetmap.org/users/6497/matija-nalis "concrete slabs
   are very often pre-fabricated elsewhere and brought to site (which is why
   wiki mentiones it, I guess), that is no hard requirement - they can
   certainly be made on the spot."
   -
   https://github.com/streetcomplete/StreetComplete/issues/4344#issuecomment-1236097545
   speaking for "concrete plate being cast on-site"
   -
   https://github.com/streetcomplete/StreetComplete/issues/4344#issuecomment-1236169432
   "many separate slabs of concrete with interruptions, so when you drive over
   it you make "thump - thump - thump" sounds each time you encounter the
   break between the slabs - in which case it is surface=concrete:plates"


Also,

> and with time one or the other plate ends up not being horizontal
anymore and this causes a difference in level between 2 plates (it's very
unpleasant with a city bike)

This happens with any form of concrete. Here is new concrete and old
concrete laid on site in the USA. This should NOT be concrete:panels imho.
The old is actually pushed up by tree roots you can see the different
levels at the joints as cracks, but it can just as easily sink elsewhere or
resettle. You can even see the attempted repair job with another bucket of
concrete. Got this on the walk with my dog today.

https://imgur.com/a/VChFi6O

Moreover, if you want to imply the quality of the concrete in the current
form I _think_ you're better off using Key:smoothness
https://wiki.openstreetmap.org/wiki/Key:smoothness then relying on an
assumption about the pour date and construction method. If you agree, the
question is again what value does the construction method being
"pre-fabricated and chained together" provide when the material is the
same, and we have a more accurate method for explaining the condition
(key:smoothness).

--
Evan Carroll - me at evancarroll.com
System Lord of the Internets
web: http://www.evancarroll.com
ph: 281.901.0011 <+1-281-901-0011>
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