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Post by M1104 on Jul 16, 2018 12:04:27 GMT
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Post by Deleted on Jul 16, 2018 12:20:26 GMT
It’s a nice touch from TfL although I’m willing to bet that this cost a lot of money (certainly more than it should have)
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Post by snoggle on Jul 16, 2018 13:05:27 GMT
It’s a nice touch from TfL although I’m willing to bet that this cost a lot of money (certainly more than it should have) Hasn't cost TfL a penny - paid for by Visa. TfL have almost certainly made a profit on the deal.
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Post by Deleted on Jul 16, 2018 13:08:22 GMT
It’s a nice touch from TfL although I’m willing to bet that this cost a lot of money (certainly more than it should have) Hasn't cost TfL a penny - paid for by Visa. TfL have almost certainly made a profit on the deal. Wonders never cease...
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Post by Deleted on Jul 25, 2018 19:36:06 GMT
Had a Jubilee train terminating at Canons Park this evening. T341 18.21 ex.Kilburn
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Post by M1104 on Jul 27, 2018 9:10:44 GMT
Regarding the ongoing work building the new southbound Bank platform (Northern Line), will the new southbound tunnel run all the way under the river to merge into the newer[1] tunnel at London Bridge... or is it a case of trains leaving Bank Station in the new tunnel to merge into the old tunnel under the river before entering the newer tunnel for the London Bridge platform?
[1] - built in recent years for the new London Bridge platform towards Morden
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Post by snowman on Jul 27, 2018 9:47:43 GMT
Regarding the ongoing work building the new southbound Bank platform (Northern Line), will the new southbound tunnel run all the way under the river to merge into the newer[1] tunnel at London Bridge... or is it a case of trains leaving Bank Station in the new tunnel to merge into the old tunnel under the river for entering the newer tunnel for the London Bridge platform. [1] - built in recent years for the new London Bridge platform towards Morden The published plans (and TfL tend to restrict these things to stop terrorists drilling into their tunnels) show the route rejoining just south of Arthur Street (where there is a construction shaft), at the Northern end the diverging tunnel is almost under the Princes St-Lothbury junction This section has right hand running as at the time of construction, had to fit in with the replacement for the King William Street station section. Also could avoid paying property compensation by running it under streets, so in some parts of the City the tubes were built almost above each other rather than side by side and had some sharp curves to match street pattern as existed around 1900 before some streets were widened I have a vague memory that the London bridge new section was built, the old line closed for a few months, plugged (blocked and sealed) near river then the tunnel rebuilt under the river without a step plate because a step plate being large diameter would have taken it too near the river bed. So to answer your query must use a section of the 1900 tunnels that were built for Moorgate extension of City and South London railway
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Post by snoggle on Jul 27, 2018 9:50:58 GMT
Regarding the ongoing work building the new southbound Bank platform (Northern Line), will the new southbound tunnel run all the way under the river to merge into the newer[1] tunnel at London Bridge... or is it a case of trains leaving Bank Station in the new tunnel to merge into the old tunnel under the river for entering the newer tunnel for the London Bridge platform. [1] - built in recent years for the new London Bridge platform towards Morden AIUI the new tunnel alignment at Bank s/b rejoins the existing tunnel just south of Bank Stn. There isn't a new tunnel all the way to London Bridge. I took this photo of the cut away model of the scheme when they had an exhibition a few years ago. You can see that the new tunnel links into the old tunnel not far south of Monument station.
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Post by M1104 on Jul 27, 2018 9:56:41 GMT
Regarding the ongoing work building the new southbound Bank platform (Northern Line), will the new southbound tunnel run all the way under the river to merge into the newer[1] tunnel at London Bridge... or is it a case of trains leaving Bank Station in the new tunnel to merge into the old tunnel under the river for entering the newer tunnel for the London Bridge platform. [1] - built in recent years for the new London Bridge platform towards Morden AIUI the new tunnel alignment at Bank s/b rejoins the existing tunnel just south of Bank Stn. There isn't a new tunnel all the way to London Bridge. I took this photo of the cut away model of the scheme when they had an exhibition a few years ago. You can see that the new tunnel links into the old tunnel not far south of Monument station. Nice one on the photo link, thanks! Would be interesting to know if there were any 'senario' blueprints for similar works at Clapham North and Clapham Common, them still being Island platform stations.
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Post by snoggle on Jul 27, 2018 10:18:59 GMT
AIUI the new tunnel alignment at Bank s/b rejoins the existing tunnel just south of Bank Stn. There isn't a new tunnel all the way to London Bridge. I took this photo of the cut away model of the scheme when they had an exhibition a few years ago. You can see that the new tunnel links into the old tunnel not far south of Monument station. Nice one on the photo link, thanks! Would be interesting to know if there were any 'senario' blueprints for similar works at Clapham North and Clapham Common, them still being Island platform stations. I am not aware of TfL / LU having instigated any planning works for either of the Clapham stations. I think any crowding issues there are a very long way down the list compared to Camden Town, Holborn and other Zone 1 stations. Of course the other issue that comes into play in that area is the existence of the disused "express Northern Line" tunnels which are now used for tours and small businesses. That may make station works a tad complicated at the Claphams.
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Post by snowman on Jul 27, 2018 10:32:25 GMT
AIUI the new tunnel alignment at Bank s/b rejoins the existing tunnel just south of Bank Stn. There isn't a new tunnel all the way to London Bridge. I took this photo of the cut away model of the scheme when they had an exhibition a few years ago. You can see that the new tunnel links into the old tunnel not far south of Monument station. Nice one on the photo link, thanks! Would be interesting to know if there were any 'senario' blueprints for similar works at Clapham North and Clapham Common, them still being Island platform stations. Thanks for the photo, I assume the purple section in foreground is the long closed King William Street station Both Clapham North and Clapham Common already have extra tunnels (built during WW2 as shelters, for post war conversion to extra running tunnels), so it would only need a diversion tunnel into these if required, however they were designed as running tunnels so only 4.9m diameter, but about 427m long (almost 4 train lengths based on 108m trains) underground-history.co.uk/shelters.php
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Post by capitalomnibus on Jul 27, 2018 13:02:42 GMT
Regarding the ongoing work building the new southbound Bank platform (Northern Line), will the new southbound tunnel run all the way under the river to merge into the newer[1] tunnel at London Bridge... or is it a case of trains leaving Bank Station in the new tunnel to merge into the old tunnel under the river for entering the newer tunnel for the London Bridge platform. [1] - built in recent years for the new London Bridge platform towards Morden AIUI the new tunnel alignment at Bank s/b rejoins the existing tunnel just south of Bank Stn. There isn't a new tunnel all the way to London Bridge. I took this photo of the cut away model of the scheme when they had an exhibition a few years ago. You can see that the new tunnel links into the old tunnel not far south of Monument station. Why is there a need for a new tunnel?
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Post by snoggle on Jul 27, 2018 13:25:56 GMT
AIUI the new tunnel alignment at Bank s/b rejoins the existing tunnel just south of Bank Stn. There isn't a new tunnel all the way to London Bridge. I took this photo of the cut away model of the scheme when they had an exhibition a few years ago. You can see that the new tunnel links into the old tunnel not far south of Monument station. Why is there a need for a new tunnel? Two main reasons. The N Line platforms at Bank are incredibly narrow and congested. This means they can't cope with the peak number of passengers. This affects train dwell times which means Bank is currently a constraint on how many trains LU can run on the City branch. It therefore makes sense to "do an Angel" and build a new tunnel s/b and then fill in the existing s/b tracks and make a new concourse area. In addition the entire station will be made step free internally - parts of it already are from DLR to Street - and there will be new connecting tunnels, escalators and a new accessible ticket hall on Cannon Street. All of this eases the chronic congestion that Bank suffers from. It also improves the evacuation times at the station in the event of a fire. Let's just say Bank tube station is quite possibly the last place I'd want to be in if there was a fire. One final thing - the Northern Line platforms are also an interchange routes between Monument and the Central Line. This just compounds the frankly ridiculous congestion in this part of the station.
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Post by Deleted on Jul 27, 2018 15:05:27 GMT
Last week was at Hatton Cross and a terminating train arrived westbound into platform 1 departed shortly after to Arnos Grove. I think that’s very rare, having a PL turned short at Hatton Cross.
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Post by ronnie on Jul 27, 2018 15:30:17 GMT
Why is there a need for a new tunnel? Two main reasons. The N Line platforms at Bank are incredibly narrow and congested. This means they can't cope with the peak number of passengers. This affects train dwell times which means Bank is currently a constraint on how many trains LU can run on the City branch. It therefore makes sense to "do an Angel" and build a new tunnel s/b and then fill in the existing s/b tracks and make a new concourse area. In addition the entire station will be made step free internally - parts of it already are from DLR to Street - and there will be new connecting tunnels, escalators and a new accessible ticket hall on Cannon Street. All of this eases the chronic congestion that Bank suffers from. It also improves the evacuation times at the station in the event of a fire. Let's just say Bank tube station is quite possibly the last place I'd want to be in if there was a fire. One final thing - the Northern Line platforms are also an interchange routes between Monument and the Central Line. This just compounds the frankly ridiculous congestion in this part of the station. ANd while TfL don't say it (for obvious reasons) it is faster to go from District - > Northern platforms -> DLR than the signposted route. Adds to the congestion
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