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Reply to "Acceptable grade percentages"

Another important factor: you can't start a grade at 6% without risking electrical and running problems regardless of whether or not curves are involved.  You have to include what are called vertical curves (I prefer to think of them as transitions) where you start from flat and start a gentle rise.  So, if you still expect of rise of say 5 inches in 10 feet, with two transitions of sufficient length at top and bottom, your ruling grade (the steepest point) might have to be 8% to 9%.  That is so much harder on engines, it's almost not worth doing.

Chuck

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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