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Discussion Starter · #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!!!!!
 

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A 1 inch rise over 100 inches is 1 percent.
 
A 1 inch rise over 50 inches is 2 percent.
 
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.
 

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Discussion Starter · #3 ·
Thank you very much,some times with age and health problems you loose segments of your programs,thanks again!!!!
 

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Lets work that to 10ft. distance:
    10% would be 1ft. or 12"
      5% would be 6" 
     1.2" is a 1% increase.
      
 
 

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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
 

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