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Oxonhutch
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« Reply #1365 on: May 13, 2020, 08:34:43 » |
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Is there any other, can just see a 44' 3" ramp would work at 125 mph
Just under a quarter second should be enough, shouldn't it?  Although reading the attached article, the effective length is only 25'8" so 140 milliseconds might be a bit tight! |
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« Last Edit: May 13, 2020, 08:40:08 by Oxonhutch »
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SandTEngineer
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« Reply #1366 on: May 13, 2020, 08:38:31 » |
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Yes, it could be done with coded track circuits like the original 1968 Victoria tube line. Level 1 is nothing new.. |
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TaplowGreen
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« Reply #1368 on: May 17, 2020, 20:14:55 » |
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Does that represent a further delay? |
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stuving
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« Reply #1369 on: May 17, 2020, 20:18:17 » |
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Does that represent a further delay? No, it reads almost the same as January's update. |
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SandTEngineer
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« Reply #1370 on: May 18, 2020, 08:51:48 » |
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I picked out this snippet: Each Elizabeth line station has over 50 km of communications cabling, 200 CCTV▸ cameras, 66 information displays, 200 radio antennas, 750 loudspeakers and 50 help points. All this technology needs to be fully installed, tested and integrated.  |
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grahame
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« Reply #1371 on: May 18, 2020, 09:19:54 » |
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I picked out this snippet: Each Elizabeth line station has over 50 km of communications cabling, 200 CCTV▸ cameras, 66 information displays, 200 radio antennas, 750 loudspeakers and 50 help points. All this technology needs to be fully installed, tested and integrated. 750 loudspeakers at places like Taplow may lead to complaints of noise nuisance from nearby housing, might it not? |
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Coffee Shop Admin, Chair of Melksham Rail User Group, TravelWatch SouthWest Board Member
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SandTEngineer
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« Reply #1372 on: May 18, 2020, 09:29:41 » |
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I picked out this snippet: Each Elizabeth line station has over 50 km of communications cabling, 200 CCTV▸ cameras, 66 information displays, 200 radio antennas, 750 loudspeakers and 50 help points. All this technology needs to be fully installed, tested and integrated. 750 loudspeakers at places like Taplow may lead to complaints of noise nuisance from nearby housing, might it not? I think they are speaking of the central section stations (pun intended) |
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Electric train
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« Reply #1373 on: May 18, 2020, 13:47:27 » |
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I've been in one of the Contractors Lab / development area. It would be complex in its self if it was just one company supply systems but its not. There are large companies who are normally in cut throat competition with each other have to work collaboratively.
One concern they have (and they are a the UK▸ part of Germany company) is the free flow of information and engineers after the 31st Dec 2020, whilst it will not stop progress may be slowed down
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Starship just experienced what we call a rapid unscheduled disassembly, or a RUD, during ascent,”
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TaplowGreen
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« Reply #1374 on: May 19, 2020, 07:06:52 » |
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I picked out this snippet: Each Elizabeth line station has over 50 km of communications cabling, 200 CCTV▸ cameras, 66 information displays, 200 radio antennas, 750 loudspeakers and 50 help points. All this technology needs to be fully installed, tested and integrated. 750 loudspeakers at places like Taplow may lead to complaints of noise nuisance from nearby housing, might it not? Depends who's singing. |
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stuving
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« Reply #1375 on: May 24, 2020, 18:40:58 » |
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Now seems a good time to invite you to look at the Crossrail Learning Legacy programme - if only because it may be taken down soon! WARNING: Please make sure you are not eating anything you might choke on when you look at this. About Learning Legacy
Learning Legacy is the collation and dissemination of good, practice, innovation and lessons learned from the Crossrail construction programme aimed at raising the bar in industry and showcasing UK▸ PLC.
The Crossrail learning legacy builds on the work previously undertaken on the London 2012 Learning Legacy and contributes to an overall body of knowledge on major construction projects. It aims to share:
Knowledge and insight gained during the lifetime of the Programme that may be of benefit to future projects and programmes
Documents and templates that have been used successfully on the Programme that can be ‘pinched with pride’ by other projects
Datasets that can inform future research projects
The experts behind the delivery of the Crossrail Programme
There's much more at that link. When I first came across this, some time ago, the words "hubris" and "tempting fate" did flicker across my consciousness... Wel, in fact the Crossrail Learning Legacy programme wasn't tactfully folded up and packed away, but it (or at least its web presence) is still there. Now I find that there is still a public corporation no less (the same status as the BBC» ) called Crossrail International. OUR MISSION
Our mission is to share the experience of Crossrail’s people and partners in helping cities around the world unlock their potential through the provision of world-class transport networks that enable sustainable growth for their communities.
OUR EXPERTISE
We're raising the bar for infrastructure projects around the world by making Crossrail's experts, lessons learned, good practice and innovations available to industry stakeholders.
I bet its employees are rather glad we are not going to parties at the moment - it must be painful having to field those "Crossrail International - what do you do there?" questions. |
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grahame
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« Reply #1376 on: July 24, 2020, 13:25:49 » |
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From The GuardianThe heavily delayed Crossrail will not open as planned in summer 2021 because of delays caused by coronavirus, its board has said.
The troubled railway, from Berkshire to Essex via central London, was originally expected to open in December 2018 but repeated delays have pushed it back.
On Thursday evening, Crossrail said: “A programme of this scale and complexity was already challenging, the impact of Covid-19 has clearly made the existing pressures more acute.
“Due to a pause of physical activity on sites and significant constraints on ongoing work – time has been lost, only some of which can be recovered.
“The opening of the central section between Paddington and Abbey Wood next summer, as announced earlier this year prior to Covid-19, is not achievable.”
Crossrail did not provide a new date for when the railway line, to be called the Elizabeth line, was now expected to be open, but said that a “more comprehensive update” would be issued in due course. |
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Coffee Shop Admin, Chair of Melksham Rail User Group, TravelWatch SouthWest Board Member
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IndustryInsider
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« Reply #1378 on: August 21, 2020, 16:45:16 » |
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On this occasion at least a much more plausible reason.
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To view my GWML▸ Electrification cab video 'before and after' video comparison, as well as other videos of the new layout at Reading and 'before and after' comparisons of the Cotswold Line Redoubling scheme, see: http://www.dailymotion.com/user/IndustryInsider/ |
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TaplowGreen
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« Reply #1379 on: August 21, 2020, 18:35:56 » |
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"Rail project runs years behind schedule and way over budget".......who'd have thought it? 🤦♂️
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