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Im in the process of dismanteling my 4x8 and moving to a larger L shaped layout and on my new layout i want to recreate the 4.6% grade, going up to 6-12 inches for the summit ,close to me im in Asheville, North Carolina, the main length will be 6+ feet per up or down hill with a 3 foot summit, so what height per foot do i need to pull this off if its even possible if i have confused anyone please let me know and ill try to explain better. Thanks for the help <br /> <br />Nick
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