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Clapham Junction “platform 0”

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ess

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Why is the disused platform next to platform 1 no longer in use? It seems an obvious place to have spare capacity for platform 1
 
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swt_passenger

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Why is the disused platform next to platform 1 no longer in use? It seems an obvious place to have spare capacity for platform 1
IIRC from previous discussions the supporting structure underneath it, (aka the “Banana Arches”?), is considered unsafe for the weight of modern EMUs. It’s why the stepped layout for current P1 and P2 was chosen by NR.
 

Deepgreen

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Yes - unless the structure is strengthened it can't be used (and current requirements don't call for another platform there).
 

zwk500

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Because it will cost an absolute bomb. It's been looked at several times - and is recognised as the most likely option to meet LO's growth in the long-term. However there's a lot of stuff on the trackbed that'd need to be moved first and it'd also need a bit of jiggling with the track layout, which is best left until the migration to the ROC is complete (is that area still controlled by Wimbledon?).

IIRC the current platforms 1/2 can handle 4tph easily each, with 5tph being fairly safe but 6tph is pushing everything to the minimum margins and would likely be problematic for performance.

EDIT: Note the different structures for the Platform 0 trackbed and the main station arches: https://goo.gl/maps/ktFNnvnd9pEph8Pg9. Certainly possible to refurb it, but not cheap in that location.
 
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Peregrine 4903

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Because it will cost an absolute bomb. It's been looked at several times - and is recognised as the most likely option to meet LO's growth in the long-term. However there's a lot of stuff on the trackbed that'd need to be moved first and it'd also need a bit of jiggling with the track layout, which is best left until the migration to the ROC is complete (is that area still controlled by Wimbledon?).

IIRC the current platforms 1/2 can handle 4tph easily each, with 5tph being fairly safe but 6tph is pushing everything to the minimum margins and would likely be problematic for performance.

EDIT: Note the different structures for the Platform 0 trackbed and the main station arches: https://goo.gl/maps/ktFNnvnd9pEph8Pg9. Certainly possible to refurb it, but not cheap in that location.
Yeah its still controlled by Wimbledon. Won't be moving anytime soon.
 
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