Posted by Bob Thompson on Friday, May 20, 2005 at 2:53PM :
In Reply to: 6% grade???? posted by Jay B. Good on Friday, May 20, 2005 at 12:48PM :
According to surveying info I've encountered a grade is a percentage of 45 deg. of incline/decline I.E. 6% of 45 deg.
or so I have read.
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