Max Demian Wrote in message:
On 21/03/2018 20:22, Jim K wrote:
Johnny B Good Wrote in message:

It was not I who was obsessed with bridges needing to be "flat", it was
you. I think you are conflating Brian's mention about 'flatness' and
curvature of the Earth corrections with my not being able to find a
curvature of the earth divergence figure for the Severn bridge to compare
against the figure that Tim+ had found for the Humber bridge. I made no
mention of 'flatness' until you introduced it into this sub-thread.

--
Johnny B Good


Oh dear. Put very simply, if one wasn't trying to build
something flat, why would one be bothered with calculations to
the mm to allow for curvature of the earth ? !

To ensure that it's curved to the right degree?

--
Max

Such as a.........?
(not a bridge shurely, if anything they are more likely to be hump
backed...)

--
Jim K


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