# Blue square

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+ | [[Image:Ski trail rating symbol-blue square.png|'''[[Blue Square]]''' Intermediate Intermediate difficulty '''[[slopes]]''' with '''[[Grades]]''' commonly ranging from 25% to 40%. These slopes are usually groomed. Blue Square runs make up the bulk of pistes at most '''[[ski areas]]''', and are usually among the most heavily trafficked.|thumb|200px]] | ||

- | + | '''[[Blue Square]]''' Intermediate Intermediate difficulty '''[[slopes]]''' with '''[[Grades]]''' commonly ranging from 25% to 40%. | |

- | + | These slopes are usually groomed. Blue Square runs make up the bulk of pistes at most '''[[ski areas]]''', and are usually among the most heavily trafficked. | |

+ | == '''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]]''' | ||

*'''[[Slope]]''' | *'''[[Slope]]''' | ||

*'''[[Grade]]''' | *'''[[Grade]]''' | ||

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*Wikipedia ''Ski trail ratings'' [http://en.wikipedia.org/wiki/Alpine_skiing] | *Wikipedia ''Ski trail ratings'' [http://en.wikipedia.org/wiki/Alpine_skiing] | ||

---- | ---- | ||

- | Return to '''[[Ski lift]]''', '''[[Ski Related Definitions]]''', '''[[Freestyle Equipment Rules]]''', '''[[General Definitions]]''' or '''[[Freestyle Skiing]]''' | + | Return to '''[[Trail designation system]]''', '''[[Ski lift]]''', '''[[Ski Related Definitions]]''', '''[[Freestyle Equipment Rules]]''', '''[[General Definitions]]''' or '''[[Freestyle Skiing]]''' |

[[Category:Freestyle Skiing]] [[Category:Equipment Freestyle Skiing]] [[Category:Freestyle Glossary]] | [[Category:Freestyle Skiing]] [[Category:Equipment Freestyle Skiing]] [[Category:Freestyle Glossary]] | ||

[[Category:Freestyle Infrastructure]] | [[Category:Freestyle Infrastructure]] |

## Current revision

**Blue Square** Intermediate Intermediate difficulty **slopes** with **Grades** commonly ranging from 25% to 40%.

These slopes are usually groomed. Blue Square runs make up the bulk of pistes at most **ski areas**, and are usually among the most heavily trafficked.

## [edit] **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.

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.

## [edit] **Also see**

**Trail designation system****Slope****Grade****Inclinometer****Mountain****Grade****Average Grade****Trail System****Average Grade****Average Width****Mountain master planning process****Maximum Grade****Ski resort**

## [edit] **Reference**

- Wikipedia
*Ski trail ratings*[1]

Return to **Trail designation system**, **Ski lift**, **Ski Related Definitions**, **Freestyle Equipment Rules**, **General Definitions** or **Freestyle Skiing**