[Tagging] surface=ground/dirt/earth

Fernando Trebien fernando.trebien at gmail.com
Wed Mar 19 23:16:32 UTC 2014


I think that adding the idea of "risk of degradation" is very
enriching to the article.

Just to test the concept: if tracktype means durability/endurance more
than firmness, what tracktype would you (and others) expect to see
alongside with surface=stone?

On Tue, Mar 18, 2014 at 2:14 AM, Dave Swarthout <daveswarthout at gmail.com> wrote:
> Yes, I agree firmness works better than stiffness for describing a surface.
> I still would prefer a term that better characterizes what Fernando said
> above: "To me, the idea [of] a firm/soft mixture seems closely related to
> "how well maintained" the track/road is, as mixtures that are not so
> durable/steady/firm quickly wear down and look 'poorly maintained'."
>
> A poorly maintained road, or one that is not well engineered, or one
> composed of loose, uncompacted materials will be much less durable than one
> that has those characteristics. Consequently, I still think durability fits
> the bill. I hesitate to bring this up but the discussion about
> trafficability tried to rationalize the relationship between a highway's
> surface, hardness, composition and smoothness and ran into similar problems
> (David Bannon?)
>
> FWIW, borrowing again from Fernando above I would reword the definitions as
> so:
>
> grade1: "heavily compacted hardcore"
> grade1: [Usually paved. If unpaved then a heavily compacted mixture of
> materials (gravel, sand, earth, clay) that provide a fairly smooth, durable
> and relatively weather-resistant surface.]
>
> grade2: "unpaved (...) surface of gravel [a hard material] mixed with
> varying amount of [soft materials] sand, silt and clay"
> grade2: [Unpaved (...) surface of gravel mixed with a varying amount of
> other materials and lightly compacted or rolled to provide a good surface.
> Less durable or weather resistant than a grade1 track.]
>
> grade3: "even mixture of hard and soft materials"
> grade3" [Almost always an unpaved dirt road. A mixture of uncompacted hard
> and soft materials providing a reasonable surface. Subject to moderate
> degradation in bad weather. ]
> grade4: "prominently with soil/sand/grass [soft materials], but with some
> hard materials"
> grade4: [A rougher unpaved dirt road with a mostly soft surface, poorly
> maintained and not very durable. Rain and other bad weather degrade this
> type of track rapidly.]
> grade5: "lacking hard materials"
> grade5: [A very rough unpaved track composed of loose, uncompacted, soft
> materials often having a surface of grass and dirt, or, in wet weather, mud.
> Not very durable -- easily eroded.]
>
> Other OSMers have amended this list to include grade6 and even grade7 for
> tracks passable by 4WD or ATV only. What about those?
>
>
>
> On Tue, Mar 18, 2014 at 8:57 AM, Fernando Trebien
> <fernando.trebien at gmail.com> wrote:
>>
>> "Firmness" sounds good to me:
>> http://www.merriam-webster.com/dictionary/firmness
>>
>> I know that "soundness" means the same but has some additional
>> meanings (http://www.merriam-webster.com/dictionary/soundness),
>> "firmness" is more specific.
>>
>> On Mon, Mar 17, 2014 at 9:09 PM, johnw <johnw at mac.com> wrote:
>> >
>> >
>> >
>> > On Mar 18, 2014, at 1:35 AM, Fernando Trebien
>> > <fernando.trebien at gmail.com>
>> > wrote:
>> >
>> >  Replacing 'stiffness'
>> > with something else is absolutely fine with me.
>> >
>> >
>> >
>> > What about firmness? soundness?
>> >
>> >
>> > Javbw
>> >
>> > _______________________________________________
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>> >
>>
>>
>>
>> --
>> Fernando Trebien
>> +55 (51) 9962-5409
>>
>> "The speed of computer chips doubles every 18 months." (Moore's law)
>> "The speed of software halves every 18 months." (Gates' law)
>>
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>
>
>
>
> --
> Dave Swarthout
> Homer, Alaska
> Chiang Mai, Thailand
> Travel Blog at http://dswarthout.blogspot.com
>
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>



-- 
Fernando Trebien
+55 (51) 9962-5409

"The speed of computer chips doubles every 18 months." (Moore's law)
"The speed of software halves every 18 months." (Gates' law)



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