John F. Eldredge
john at jfeldredge.com
Thu Mar 20 16:05:47 UTC 2014
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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Dr. Martin Luther King, Jr.
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