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Re: Clarification

"David Martin" <d_martin@mountains.net.au> wrote:

>Here in Oz (& the UK), we state gradients as 1 in x, e.g. 1 in 50, 1 in 30,
>1 in 10 etc.
>In the US, & some other countries, they state gradients as a percentage.
>The question is, how do you convert between the two?

>A James Robinson has E-mailed me that the formula is:

>"one in X = (1/X)*100 percent.
>Example: one in fifty = 1/50 = .02 (or 2 percent)"

>Can anyone confirm that?

Undoubtedly!

Ye of little faith

See here......

			|
			|
			|	1
			|
_____________________	|
                     X

The line rises 1 unit for every X travelled horizontally, so it's a 1
in X grade

The grade in fractional terms is 1/X (which has the same meaning as
the previous sentence).  So in %age terms, it's 100 times 1/x.

Geoff Lambert