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#31
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![]() "Lüko Willms" wrote in message ... Am Mon, 24 Mar 2008 23:00:56 UTC, schrieb Dan G auf uk.railway : Anyone seen a more detailed costing of the scheme? I didn't. But I have some thoughts about this: *Why* is it costing so much more than other, not dissimilar, projects? Comparing just the length of the cross-London tunnel with the length of the HS1 London tunnel and wondering why the same length of tunnel can be much more costly to build -- does make sense only when one wants to see the cost of the tunnel as only the cost of boring it, by meter or kilometer. But there may be a lot of utility lines ond other uses of the underground to be removed before one can go on boring; also London Crossrail is planned to have more stations, and underground stations, which in itself would be more expensive than the one Stratford Int'l box, plus interchanges with existing underground and train stations. That is a lot of extra work, which makes the London Crossrail tunnel more expensive to build than the London HS1 tunnel with the one open station in its middle. Just my two cents... Cheers, L.W. More to do with the very deep foundations of tall buildings in Central London than utilities. In comparison, the tunnelling for CTRL2 and JLE were relatively unimpeded by such constraints. The gradient profile should be 'interesting' as a result of this. Brian |
#32
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In message
, at 09:47:14 on Tue, 25 Mar 2008, Lüko Willms remarked: Comparing just the length of the cross-London tunnel with the length of the HS1 London tunnel and wondering why the same length of tunnel can be much more costly to build Only a third of the Crossrail budget is building the tunnel. And that tunnel is under random property and roads in Central London. HS1 is largely built either in open countryside, or under an existing railway line. -- Roland Perry |
#33
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![]() "Grumpy Old Man" wrote in message news ![]() The Real Doctor wrote: On 25 Mar, 08:47, "Lüko Willms" wrote: Am Mon, 24 Mar 2008 22:26:35 UTC, schrieb The Real Doctor auf uk.railway : The people Crossrail is supposed to benefit - the international financial community I think that London Crossrail will benefit much more people than just the "financial community". It will be a faster way to get _thru_ London, instead of just _into_ London. Well, it would be if it was designed to take long distance trains. But it's not - just stoppers from Maidenhead to Shenfield. Long distance travellers (Bristol - Norwich?) wanting to travel across London will still have to change twice, just as now. Ian All the more reason to pull the plug. Thameslink, by contrast, will accommodate long-distance services, will it not ? Depends if you consider Brighton - Bedford or Peterborough long - distance, but they are still going to use basically high capacity commuter trains. In terms of gauge, there appears little reason why an electric train couldn't run Bristol - Norwich in the future (at least off peak when the service is lighter), but like Thameslink the central section services will require high frequency all stations stoppers at, so they will almost certainly decide against it for reliability of timetabling. Paul |
#34
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"Paul Scott" wrote:
"Grumpy Old Man" wrote in message news ![]() The Real Doctor wrote: On 25 Mar, 08:47, "Lüko Willms" wrote: Am Mon, 24 Mar 2008 22:26:35 UTC, schrieb The Real Doctor auf uk.railway : The people Crossrail is supposed to benefit - the international financial community I think that London Crossrail will benefit much more people than just the "financial community". It will be a faster way to get _thru_ London, instead of just _into_ London. Well, it would be if it was designed to take long distance trains. But it's not - just stoppers from Maidenhead to Shenfield. Long distance travellers (Bristol - Norwich?) wanting to travel across London will still have to change twice, just as now. Ian All the more reason to pull the plug. Thameslink, by contrast, will accommodate long-distance services, will it not ? Depends if you consider Brighton - Bedford or Peterborough long - distance, but they are still going to use basically high capacity commuter trains. In terms of gauge, there appears little reason why an electric train couldn't run Bristol - Norwich in the future (at least off peak when the service is lighter), but like Thameslink the central section services will require high frequency all stations stoppers at, so they will almost certainly decide against it for reliability of timetabling. Paul Well the Thameslink services you mention look longer than is currently proposed for Crossrail. I agree with you, services such as Norwich to Bristol would make better use of Crossrail than allowing it to be hogged mainly for travel within the M25 area. |
#35
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On Mar 25, 8:00*am, The Real Doctor wrote:
On 24 Mar, 23:10, Adrian wrote: On Mar 24, 4:00 pm, Dan G wrote: Anyone seen a more detailed costing of the scheme? *Why* is it costing so much more than other, not dissimilar, projects? In part it will cost a lot because it will be (or should be) engineered to a very high standard. *The Jubilee Line extension is a pointer in that respect. But it is predicted to cost more than five times as much as the Jubilee Line extension ... You have clearly never lived in a city where good spacious (1,000 sq ft per person) affordable housing is available to middle class workers. *Or, enjoyed one where a normal comfortable journey to work is 40 minutes or less. And how many people do you think will find good, spacious, affordable housing as a result of this line. It'll knock quarter of an hour, tops, off the journey onto London - are those fifteen minutes really deterring millions from moving to good, spacious, affordable housing? Ian But wasn't the main justification for crossrail the relief of the overcrowding already present on existing lines, as well as allowing for predicted growth. It will take a fair number of people off the Central line (and other Underground lines) as well as providing extra capacity on the National Rail lines to either side. The fact that it will reduce journey times is an added benefit, but not the main justification for the construction. |
#36
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On 25 Mar, 11:28, "Grumpy Old Man"
wrote: "Paul Scott" wrote: "Grumpy Old Man" wrote in message news ![]() The Real Doctor wrote: On 25 Mar, 08:47, "Lüko Willms" wrote: Am Mon, 24 Mar 2008 22:26:35 UTC, *schrieb The Real Doctor *auf uk.railway : The people Crossrail is supposed to benefit - the international financial community * I think that London Crossrail will benefit much more people than just the "financial community". * It will be a faster way to get _thru_ London, instead of just _into_ London. Well, it would be if it was designed to take long distance trains. But it's not - just stoppers from Maidenhead to Shenfield. Long distance travellers (Bristol - Norwich?) wanting to travel across London will still have to change twice, just as now. Ian All the more reason to pull the plug. *Thameslink, by contrast, will accommodate long-distance services, will it not ? Depends if you consider Brighton - Bedford or Peterborough long - distance, but they are still going to use basically high capacity commuter trains. In terms of gauge, there appears little reason why an electric train couldn't run Bristol - Norwich in the future (at least off peak when the service is lighter), but like Thameslink the central section services will require high frequency all stations stoppers at, so they will almost certainly decide against it for reliability of timetabling. Paul Well the Thameslink services you mention look longer than is currently proposed for Crossrail. *I agree with you, services such as Norwich to Bristol would make better use of Crossrail than allowing it to be hogged mainly for travel within the M25 area.- Hide quoted text - I honestly can't see why. How many people want to make that journey? I'll guess it's far fewer than want to travel within London. The ideal, of course, would be a four track line, allowing fast trains and stoppers to run on different tracks. But if they have to choose one, it should be the heavily used suburban services every time. |
#37
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#38
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In message , Neil Williams
writes On Tue, 25 Mar 2008 08:58:47 +0000, Jane Sullivan wrote: And if those employees lost their jobs, then that would take several billion pounds out of the local economy of the south-east and, by extension, Britain. But why would they lose their jobs if Crossrail didn't happen? They'd lose their jobs if the financial centre of Europe moved out of London to Frankfurt. The existing lines are by and large adequate (if not always pleasant) for getting everyone to their current jobs - if they weren't, they wouldn't get there! Neil -- Jane British OO, American and Australian HO, and DCC in the garden http://www.yddraiggoch.demon.co.uk/railway/railway.html |
#39
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On Tue, 25 Mar 2008 12:21:21 +0000, Graeme Wall
wrote: They've been trying that since the 1950s at least, works well doesn't it? Do you propose that further growth of London is feasible, then? If you want to rent somewhere to live someone else has to invest in buying it in the first place. This is true, though the difference between rents and mortgages in many places suggests that there is not a correct balance. Neil -- Neil Williams Put my first name before the at to reply. |
#40
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![]() On 25 Mar, 11:12, Roland Perry wrote: In message , at 09:47:14 on Tue, 25 Mar 2008, Lüko Willms remarked: Comparing just the length of the cross-London tunnel with the length of the HS1 London tunnel and wondering why the same length of tunnel can be much more costly to build Only a third of the Crossrail budget is building the tunnel. And that tunnel is under random property and roads in Central London. HS1 is largely built either in open countryside, or under an existing railway line. Quite - the CTRL tunnels rarely venture far away from being underneath railway alignments that have been in existence for a long time, so there were far fewer issues about underground utilities (sewers, cable tunnels etc), building foundations etc and also a greater confidence that there were not old hidden excavations. Nevertheless there has been at least one problem caused to the railways above by the CTRL tunnelling - a retaining wall next to the North London Line at Dalston Junction had to be rebuilt. See the bottom of this page for the reference: http://www.loveplums.co.uk/Tube/Broa...et_line_2.html In February 2003 there was also one very significant problem caused by tunnelling away from railway lands in a residential street in central Stratford where a great hole opened up in the back gardens of houses on Lavender Street - the CTRL tunnelling seemingly disturbed a network of old water wells... http://news.bbc.co.uk/1/hi/england/2741307.stm http://news.bbc.co.uk/1/hi/england/2742281.stm http://news.bbc.co.uk/1/hi/england/london/2984955.stm Tunnelling might be far easier these days but it is certainly not without its risks - and tunnelling underneath central London carries a far greater risk. |
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