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Runway slope

Posted on 2013-06-29
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I am looking at the following question and though that all you needed to do to calculate the gradient of a runway was take the difference in height between both runway ends and divide it by the runway length x 100.

"The runway elevation of runway 05 is 299ft. At the other end of the 1200m runway, the threshold elevation of runway 23 is 363 ft. What is the gradient of runway 05?"

Difference in height is = 363 - 299=>64 feet

(64/1200) x 100=>5.33%

The example answer i am looking at in the book is 1.64%.

I wanted to check if I am doing something wrong.

Cheers,

Ross
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Question by:ross13
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aadih earned 2000 total points
ID: 39286755
Convert Meters into Feet first.   :-)

1200 meters = "x" ft.

Gradient = 64/"x" = 1.64.

Do the calculation yourself. ;-)
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Author Closing Comment

by:ross13
ID: 39286762
It got me:-)
64/3937(feet)

I will be ready the next time I am asked.

Thanks for the help.

Cheers,

Ross
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Expert Comment

by:aadih
ID: 39286771
Great.  You did the calculation. :-)
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