Ben Chambers nous apporta ses lumieres en ce 02/12/2006 02:41:
> OK, so I've seen a few different numbers posted here.  The design I 
> settled on is a series of 19 switchbacks, each one dropping about 52 
> feet over 750 feet, which comes out to about a 7% grade.

> The real drawback to this, is that it means the walkway is extended from 
> 3000 feet (a bit more than 1/2 mile, a considerable length on its own) 
> to about 14000 feet (close to three miles).  I'm thinking I might just 
> have to adjust my target height so I won't need switchbacks, and put an 
> elevator in at the end.

> ...Chambers

> PS Hopefully, I'll get some images up in the b.i group soon.
A workaround: make it a "natural" path. One that's just "there" instead of one 
that has been built or planed. With that aproach, you can get by with grades of 
around 100%!

-- 
Alain
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