I swear I drove a 100% slope near Pt. Reyes/Olema, CA.
I'm not kidding, someone back me up.
(c:
Toby
--- Bob Basques <[EMAIL PROTECTED]> wrote:
> Maybe this will muddy it up some more, a 100% grade
> would be a 45deg angle. (1:1
> slope) same "run" to "rise".
>
> A 50% grade would be (1:0.5 slope [or should I say
> 2:1?]) twice the "run" to
> "rise".
>
> I made a picture for those interested ( OK, so I'm
> bored)
>
> http://64.33.167.222/examples/grade-slope.jpg
>
> bobb
>
>
>
> Doug Rowbottom wrote:
>
> > --- "Dr. Gerald N. Johnson, electrical engineer"
> > <[EMAIL PROTECTED]> wrote:
> > > The mathematical relationship is that tangent(
> > > angle) = rise/run.
> > > Surveyors measure rise with a level and rod, and
> run
> > > with a tape. So %
> > > grade is simply 100 * rise / run. Far simpler to
> > > compute than angle. And
> > > at low slopes, under 5 or 6%, slope and angle
> are
> > > essentially the same
> > > for the angle in radians. There 360 degrees in a
> > > circle and 2 pi (=
> > > 6.28) radians. At 1 degree slope, slope (not %)
> is
> > > 0.017455. The angle
> > > in radians is 0.017453. There are (360/ 2 pi)
> > > 57.29578 degrees per
> > > radian. End of math lesson.
> > >
> > > Gerald J.
> > >
> > Whaaaat the h*** are you talking about
> > Doug
> >
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