Slope ratios

Every single place on-line that I can find that describes a slope ratio defines it as the ratio of drop to horizontal distance (rise-to-run ratio), and then gives an example of the exact opposite--for example, a

2:1 slope ratio is illustrated by a one foot rise for a two-foot run. Is it that there was a mistake in one landscaping textbook 50 years ago that got perpetuated, so that now everyone in the landscaping business is confused?
Reply to
Harlan Messinger
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In civil engineering, earth slopes are described as 1-1/2:1, 2:1, 3/1, 4:1, etc. This means one foot of rise in the stated number of feet. Perhaps there has been a mistaken use of terminology from one field (earthwork construction, for example) used in another field such as carpentry where other expressions are customary.

SJF

Reply to
SJF

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