In article , The Natural Philosopher
scribeth thus
On 19/03/18 11:11, Max Demian wrote:
On 19/03/2018 10:26, Brian Gaff wrote:
Well the earth is curved after all, so in reality nothing is flat or
level
is it?

I wonder how big a thing (building? bridge?) has to be before designers
have to take into account the curvature of the earth?

The tracks supprting the radio telecopes at Madingley - at two miles
long - were 'up' by IIRC 4 " at each end..

So not very big..


Madingley?, Lords bridge Squire...


--
Tony Sayer