On Wed, 13 Oct 2004, John Rowland wrote:

"Tom Anderson" wrote in message
...
On 13 Oct 2004, Boltar wrote:

"Andrew" wrote in message
...

how about connecting the Northern City / WAGN line with the
Thameslink spur into Moorgate, and restoring the 3rd curve at
Farringdon Junction making it a triangular junction again.

I suspect the gradiants and curves required to
join the 2 would be too severe unless a new line
split off from blackfriars since from Barbican you'd
have to drop about 20 metres and do a 90 degree turn

More like a 120 degree turn, i think.

in the space of 1/4 mile.

Think outside the box! Don't do it with a curve to the north,
do with with a curve to the south - a spiral tunnel heading
down and round. Not only does that give you the space to
do it, but it spreads the height change out over a greater distance.

And it could call at Moorgate twice, just in case you missed your stop
the first time.

If it's good enough for Monument (on the Tyne & Wear Metro), it's dashed
well good enough for Moorgate!

tom

--
I'm angry, but not Milk and Cheese angry. -- Mike Froggatt