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  1. #1
    Concrete Kahuna MJKam11's Avatar
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    Default How do you find out/approximate the grade of a road

    Using google earth/windows live? I have seen people talking about certain roads being __% according to google earth, and I am wondering how you do this.
    -Matthew Kaminski

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  3. #2
    Concrete Kahuna 243racing's Avatar
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    Default Re: How do you find out/approximate the grade of a road

    Get one of these. Less than 10 bucks at your local hardware store.
    Toasted Longboards

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    Longskateaholic saxmachine777's Avatar
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    Default Re: How do you find out/approximate the grade of a road

    Quote Originally Posted by 243racing View Post
    Get one of these. Less than 10 bucks at your local hardware store.
    Way to read the first post.

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    Addicted Cruiser stevie's Avatar
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    Default Re: How do you find out/approximate the grade of a road

    the percent grade is determined by dividing the height by the length

    so if you have a 1000 foot long road, and the amount you drop is 100 feet, then the grade is 100/1000 or 10%

    you can get both measurements from Google Earth

  6. #5
    funhog I Support The Fish
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    Default Re: How do you find out/approximate the grade of a road

    On Google Earth: Use ruler tool to get the distance in miles. Hover over the top and the bottom of the run and note the elevation in feet. (It's in white, bottom center.)

    (top - bottom) / distance / 5280 *100 = Average % grade

    Edit:
    (top-bottom) / (distance * 52.8 ) if the order of operations was confusing...

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    Addicted Cruiser dhwa1's Avatar
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    Default Re: How do you find out/approximate the grade of a road

    what is your sig?
    "pain is the proof that you're alive

    ...and longboarding."-Hanael

    "I'd rather die on my feet rather than live on my knees"-someone

    "pain is weakness leaving th body"-someone

    Quote Originally Posted by suckyskatergirl View Post
    I like your sexy schlong... in my mouth

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    Addicted Cruiser skeeterdechico's Avatar
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    Default Re: How do you find out/approximate the grade of a road

    Take a trig class. That's what I use.

    For a really rough estimation you mark the top of the road your looking at and the bottom and you look at the elevation and take the difference:

    Top of the Hill Elevation- Bottom of the Hill Elevation/ Total distance of run.

    Make sure you measure it all in the same units (i.e. Feet)

    Edit: Sorry, totally got pwned, everybody types faster than me
    [swisschez] 12:35 am: time for wall-e
    [swisschez] 12:35 am: **** ya
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  9. #8
    Concrete Kahuna MJKam11's Avatar
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    Default Re: How do you find out/approximate the grade of a road

    Quote Originally Posted by dhwa1 View Post
    what is your sig?
    Its some guy from the band "tokio Hotel". My friend is a big fan of them and sent me that because she thought it was funny and so did I.

    thanks guys, i'm just a moron when it comes to google earth so I need special attention when it comes to that
    -Matthew Kaminski

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    Mudslide Slide Pucks

  10. #9
    Concrete Kahuna 243racing's Avatar
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    Default Re: How do you find out/approximate the grade of a road

    Quote Originally Posted by saxmachine777 View Post
    Way to read the first post.
    Oh sorry I misunderstood. I thought he meant he saw people talking about grades on google earth or whatever and thought he wanted to know how people found grades on roads. Oops.
    Toasted Longboards


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