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track grade

2K views 5 replies 5 participants last post by  barnmichael 
#1 ·
I am drawing a blank. I don't  have any man made grades in my existing line but am installing a secondary ''mountain "line. I am drawing a blank on how to calculate grade. For each 12 inches of distance you add ------ inches of elevation to get a 1,2,or3% grade. Help,Help!!!!!
 
#5 ·
A 1 inch rise over 25 inches is 4 percent.
A 3/4 inch rise over 25 inches is 3 percent.
A 1/2 inch rise over 25 inches is 2 percent.
A 1/4 inch rise over 25 inches is 1 percent.


Many folks "round down" to 24", and use a 24" level and a step block set to 1/4" increments to measure grade. It measures just a bit steeper--about 1/10%, but the difference will never be noticeable.

Later,

K
 
#6 ·
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