fernando.trebien at gmail.com
Thu Mar 20 16:29:34 UTC 2014
What I mean is that the same idea does not apply so often and so
extremely and in such a regular fashion and for long periods to other
kinds of roads. That's why I said "in fact, of snow". I would expect
to see something very similar in southern Argentina and Chile, in
Antarctica, in Greenland, and in Scandinavia.
On Thu, Mar 20, 2014 at 1:05 PM, John F. Eldredge <john at jfeldredge.com> wrote:
> The Russian "winter roads" situation is not unique. From what I have read, the same situation applies in some parts of Canada and Alaska.
> On March 20, 2014 10:58:01 AM CDT, Fernando Trebien <fernando.trebien at gmail.com> wrote:
>> In Brazil, these conditions are somewhat often permanent (or at least
>> expected to be permanent) when they happen. Sometimes it's due to poor
>> administration, which changes only every 4 years. Sometimes it's due
>> to poor construction, which costs a lot to fix. Sometimes it's due to
>> weather, which in many cases is not inconstant through the seasons.
>> But sometimes they are indeed dynamic/seasonal, though it's rare to
>> see a large (say, from grade5 to grade1, or from horrible to good
>> smoothness), so in these cases most people will choose to either
>> approximate the average or the pessimistic scenario (not so much
>> different from the average). When a large change happens (in case of a
>> natural disaster, for instance, floods), it's either temporary (the
>> situation goes back to normal) or permanent (it takes a long time to
>> get fixed), but not recurring (if it's fixed within a year, most
>> people won't expect it to happen again next year at the same place,
>> but surely it "could" repeat if the fix was poorly conducted). So I
>> think the case of the Russians (in fact, of "snow") is quite unique.
>> On Thu, Mar 20, 2014 at 12:20 PM, Martin Koppenhoefer
>> <dieterdreist at gmail.com> wrote:
>> > 2014-03-20 15:50 GMT+01:00 Fernando Trebien
>> <fernando.trebien at gmail.com>:
>> >> Perhaps what people worry about here is "how soft" the surface is.
>> >> There may be various degrees of "softness" to be measured.
>> > actually to me the problem seems that these properties are somehow
>> > If the surface is unpaved it will depend a lot on past weather
>> > whether a road is nice to use or not. The same road can be an
>> > mud inferno or frozen with lots of snow over it so it becomes nice
>> > smooth, all dependent on the season. The russians had proposed a
>> > "winter_road" to account for some of these features, in different
>> > conditions (e.g. with heavy rain periods) we might need additional
>> > as well.
>> > cheers,
>> > Martin
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> John F. Eldredge -- john at jfeldredge.com
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