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10-08.-2003, 04:44 AM
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#1 |
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Registered User
Join Date: Jul 2003
Posts: 53
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Making the Grade
Can someone explain the calculation for gradient percent? I figure it has something to do with the length of the slope vs the rise but do not know the calculation.
I was riding up a hill today and someone suggested it was 7%. Just guessing I'd say the road rose about 60-70 feet over a 180-200 foot stretch. It was short but steep, everyone was out of their seat. I have a hard time believeing it was only 7%. Especially when I think about the Giro and they were climbing a 27% grade. If my 7% gradient was truly 7% then pro cyclists can climb walls. |
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10-08.-2003, 06:44 AM
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#2 |
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Member
Join Date: Jul 2003
Posts: 98
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the percentage is rise over run. rise 7 feet for every 100 feet
7/100 = 0.07 or 7% a vertical wall would have a grade of infinity 45 degree slope is 100% grade |
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10-08.-2003, 08:49 AM
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#3 | |
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Registered User
Join Date: Jul 2003
Posts: 53
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Quote:
M2 thanks for the info.... |
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