Roland Perry wrote:

In message
, at
07:43:51 on Mon, 10 Oct 2011, Jamie Thompson
remarked:
It is known that connections can't be made at Moorgate without spending 100s
of millions though - the alterations to have a junction east of the
platforms involve adjacent building foundations - and there is basically no
way a business case would ever stand up.

I know...but it's still unfortunate. Interestingly, these foundations
don't seem to be a problem for Crossrail...

It's sufficiently 'underground' presumably.


Yes, but the point is that the greater depth allows a wider choice of
route. You still have to avoid the foundations, because many of them
are piles that were bored upwards of 30m deep, starting from a deep
basement. Also, it's not about avoiding physically hitting the piles
themselves, but about avoiding where they put their loads into the
soil below. ;-)