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Author Topic: grading question  (Read 2197 times)
bringuelmc

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« on: June 02, 2007, 02:00:51 PM »

I am establishing a new line for my backyard layout and have a 300" run in a straight line and am trying to calculate maximum amount of rise i can accomodate at about 2% grade, is it appropriate to use scale inches (approx. 680 scale inches) to calculate the max rise or actual inches (300") and still be able to pull the grade without issues. Any help is appreciated..
thanks
matt
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David

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« Reply #1 on: June 02, 2007, 02:30:15 PM »

Grade is grade whether in actual or scale measurements. a 1% grade is a rise of 1 inch in one hundred inches. So for a desired 2% grade over 300 inches that would be a 6 inch rise.

Regards,
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Regards,
David Silverton
Vernon Hills, IL
K8UOP
Skip

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« Reply #2 on: June 02, 2007, 02:37:30 PM »

2% is 2% as I figure it.  2% of 680 scale in. is 13.6 scale in. rise.  2% rise in 300" is 6".

Equivalencing scale: 680/300=2.266    13.6/2.266 = 6.001 inches in 300 in.
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Hunt
?
MBB


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« Reply #3 on: June 02, 2007, 02:45:37 PM »

Use actual inches when checking the grade, less likely you will make a mistake. Converting to scale is a unnecessary activity.
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bringuelmc

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« Reply #4 on: June 02, 2007, 03:40:38 PM »

Thanks All, probably a no brainer but i would rather ask a dumb question than make a big mistake....thanks again for the help  Smiley
matt
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BIG BEAR

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« Reply #5 on: June 03, 2007, 05:07:27 PM »


          Matt,
      The ONLY dumb question, is the one that isn't asked.

             Enjoy,
                   Barry
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Barry,

...all the Live long day... If she'd let me.
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