# Green circle

(Difference between revisions)
 Revision as of 12:16, 18 June 2011 (edit)Joe (Talk | contribs)← Previous diff Current revision (05:43, 17 August 2011) (edit) (undo)Joe (Talk | contribs) (3 intermediate revisions not shown.) Line 2: Line 2: '''[[Green circle]]''' Easiest The easiest '''[[slope]]s''' at a mountain. Green Circle trails are generally wide and groomed, typically with '''[[slope]]''' '''[[Gradients]]''' ranging from 6% to 25% (a 100% slope is a 45 degree angle). '''[[Green circle]]''' Easiest The easiest '''[[slope]]s''' at a mountain. Green Circle trails are generally wide and groomed, typically with '''[[slope]]''' '''[[Gradients]]''' ranging from 6% to 25% (a 100% slope is a 45 degree angle). + + == '''Slope Steepness''' == + [[Image:Grades degrees.png|There are two ways of measuring slope steepness. The first is a measurement using '''[[degrees]]''', which measures the angle of the slope in degrees from the horizontal. The second is a percentage.|thumb|200px]] + There are two ways of measuring slope steepness. The first is a measurement using '''[[degrees]]''', which measures the angle of the slope in degrees from the horizontal. The second is a percentage. + + This is calculated using the formula 100*rise/run. Rise is the vertical change and run is the horizontal distance. A 100% slope is angled at 45 degrees. + + *10% is equivalent to 5.71º + *20% is equivalent to 11.31º + *30% is equivalent to 16.7º + *40% is equivalent to 21.8º + *50% is equivalent to 25.67º + *75% is equivalent to 36.8º + *100% is equivalent to 45º + + A beginner slope is typically between 6% and 25%. Intermediate hills range from 25% to 40%, and expert is 40% plus. == '''Also see''' == == '''Also see''' == -
+
- '''[[Trail designation system]]''' + *'''[[Trail designation system]]''' *'''[[Green circle]]''' *'''[[Green circle]]''' *'''[[Blue Square]]''' *'''[[Blue Square]]''' Line 25: Line 41: *'''[[Maximum Grade]]''' *'''[[Maximum Grade]]''' *'''[[Ski resort]]''' *'''[[Ski resort]]''' + *'''[[Mountain]]''' + *'''[[Average Width]]''' + *'''[[Maximum Grade]]''' + *'''[[Base Elevation]]''' + *'''[[Base Area Design]]'''
+ == '''Reference''' == == '''Reference''' == *Wikipedia ''Ski trail ratings'' [http://en.wikipedia.org/wiki/Alpine_skiing] *Wikipedia ''Ski trail ratings'' [http://en.wikipedia.org/wiki/Alpine_skiing]

## Current revision

Green circle Easiest The easiest slopes at a mountain. Green Circle trails are generally wide and groomed, typically with slope Gradients ranging from 6% to 25% (a 100% slope is a 45 degree angle).

Green circle Easiest The easiest slopes at a mountain. Green Circle trails are generally wide and groomed, typically with slope Gradients ranging from 6% to 25% (a 100% slope is a 45 degree angle).

##  Slope Steepness

There are two ways of measuring slope steepness. The first is a measurement using degrees, which measures the angle of the slope in degrees from the horizontal. The second is a percentage.

There are two ways of measuring slope steepness. The first is a measurement using degrees, which measures the angle of the slope in degrees from the horizontal. The second is a percentage.

This is calculated using the formula 100*rise/run. Rise is the vertical change and run is the horizontal distance. A 100% slope is angled at 45 degrees.

• 10% is equivalent to 5.71º
• 20% is equivalent to 11.31º
• 30% is equivalent to 16.7º
• 40% is equivalent to 21.8º
• 50% is equivalent to 25.67º
• 75% is equivalent to 36.8º
• 100% is equivalent to 45º

A beginner slope is typically between 6% and 25%. Intermediate hills range from 25% to 40%, and expert is 40% plus.

##  Reference

• Wikipedia Ski trail ratings [1]