# Slope

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- | [[Image:Grade slope.png|'''[[Slope]]''' is used to describe the steepness, '''[[incline]]''', gradient, or '''[[grade]]''' of a straight line. A higher slope value indicates a steeper incline. The slope is defined as the ratio of the "rise" divided by the "run" between two points on a line, or in other words, the ratio of the '''[[altitude]]''' change to the '''[[horizontal]]''' distance between any two points on the line. It is also always the same thing as how many rises in one run.|thumb| | + | [[Image:Grade slope.png|'''[[Slope]]''' is used to describe the steepness, '''[[incline]]''', gradient, or '''[[grade]]''' of a straight line. A higher slope value indicates a steeper incline. The slope is defined as the ratio of the "rise" divided by the "run" between two points on a line, or in other words, the ratio of the '''[[altitude]]''' change to the '''[[horizontal]]''' distance between any two points on the line. It is also always the same thing as how many rises in one run.|thumb|100px]] |

+ | |||

'''[[Slope]]''' is used to describe the steepness, '''[[incline]]''', gradient, or '''[[grade]]''' of a straight line. A higher slope value indicates a steeper incline. The slope is defined as the ratio of the "rise" divided by the "run" between two points on a line, or in other words, the ratio of the '''[[altitude]]''' change to the '''[[horizontal]]''' distance between any two points on the line. It is also always the same thing as how many rises in one run. | '''[[Slope]]''' is used to describe the steepness, '''[[incline]]''', gradient, or '''[[grade]]''' of a straight line. A higher slope value indicates a steeper incline. The slope is defined as the ratio of the "rise" divided by the "run" between two points on a line, or in other words, the ratio of the '''[[altitude]]''' change to the '''[[horizontal]]''' distance between any two points on the line. It is also always the same thing as how many rises in one run. | ||

- | + | == '''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''' == | ||

+ | <div style="column-count:2;-moz-column-count:2;-webkit-column-count:2"> | ||

+ | *'''[[Trail System]]''' | ||

*'''[[Inclinometer]]''' | *'''[[Inclinometer]]''' | ||

+ | *'''[[Orography]]''' | ||

*'''[[Mountain]]''' | *'''[[Mountain]]''' | ||

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

+ | *'''[[Average Grade]]''' | ||

+ | *'''[[Inclinometer]]''' | ||

+ | *'''[[Mountain]]''' | ||

+ | *'''[[Average Width]]''' | ||

+ | *'''[[Mountain master planning process]]''' | ||

+ | *'''[[Maximum Grade]]''' | ||

+ | *'''[[Application for Freestyle Course Homologation]]''' | ||

+ | *'''[[Freestyle Course Homologation Program]]''' | ||

+ | *'''[[Aerial Course Specification]]''' | ||

+ | *'''[[Mogul Course Specification]]''' | ||

+ | </div> | ||

- | + | == '''Reference:''' == | |

- | + | ||

- | Reference: | + | |

* See Wikipedia '''''Slope''''' [http://en.wikipedia.org/wiki/Grade_(slope)] | * See Wikipedia '''''Slope''''' [http://en.wikipedia.org/wiki/Grade_(slope)] |

## Current revision

** Slope** is used to describe the steepness,

**incline**, gradient, or

**grade**of a straight line. A higher slope value indicates a steeper incline. The slope is defined as the ratio of the "rise" divided by the "run" between two points on a line, or in other words, the ratio of the

**altitude**change to the

**horizontal**distance between any two points on the line. It is also always the same thing as how many rises in one run.

## [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**

## [edit] **Reference:**

- See Wikipedia
[1]**Slope**

Return to **Freestyle Equipment Rules**, **General Definitions** or **Freestyle Skiing**