[SML] big "rigging" failure ?

[Dan Sheehan]

Here's another report on the incident, with more pictures.

http://www.newenglandskiindustry.com/viewstory.php?storyid=456

Appears that the foundation *broke* !

Reinforced concrete construction
(think bridges, buildings, roads) has a life expectancy of
about 50-100 years, sometimes.failing much sooner.
 Microcracks in cement allow moisture to reach steel,
which expands when it rusts, cracking the concrete and allowing more
moisture in.

(read "Concrete Planet" by Robert Courland).

This thing was built in 1986, my daughters are older than that (and they're
still good).

Yeah, I'll be looking for the failure analysis report.

Extremely fortunate this did not happen while the lift was in use carrying
a few hundred humans.


On Wed, Jul 13, 2016 at 11:35 PM, Dale Farmer via Stagecraft <
stagecraft at theatrical.net> wrote:

> "The foundation became detached from the underlying ground..."  So the
> structure didn't break so much as just tip over from the unending yank from
> the haul cables going down the mountain.   I'll be interested in reading
> the investigation report on this.  Foundation failures are pretty uncommon
> in modern construction.
>
> So, when a ski lift falls on the mountain, and there is nobody there to
> hear it, does it make a noise?
>

-- 
...Dan Sheehan
Fixer of things that break
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