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Unread 22-03-2018, 17:36   #33
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Originally Posted by James Shields View Post
So it looks like the Charliemont Metro station is sub-surface, and the connection to the Green line is between Darthmouth Road and Northbrook Road. That gives about 80m to get from tunnel mouth to elevated level. Is that possible?

Also, I wonder how deep the tunnel needs to go under the canal, and how deep the Charlemont station needs to be. I would assume stations on a steep incline aren't permitted.
Engineering drawings suggest its ok

Originally Posted by James Shields View Post
I also think building the underground stations with 60m platforms is rediculously short sighted. You can't just tack on an extra 20m to the platforms the way you can with surface platforms. They need to allow for future expansion from the start and build the platforms at least 100m long.
Crossrail in London are 200m
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