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Recent content by civ-eng-jim

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    York 3rd Line Works

    On whose part? Network Rail has a budget for enhancements and if it is forecast to be an overspend then some projects will be paused. Other projects will be more developed so will be seen out to completion. 1729532724 Tens of new OLE structures have been installed to facilitate the third line...
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    York 3rd Line Works

    TOCs like the operational flexibility but Network Rail doesn't like the capital cost and ongoing maintenance liability of an extra pair of points in a tight spot. One principal aim was to remove the need for the Leeds via Harrogate service to run on the ECML Up & Down lines. 1729156986 Yeah -...
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    York 3rd Line Works

    A new deck on new abutments on the Siemens depot side of the road. It's a bit tight! 1729097356 Access will be provided for Platform 8. The P8 link to the York Down Fast line is currently proposed to be removed, but there are a few options for the link to be retained with a new alignment...
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    Ashley Down station construction updates

    Possibly this system is being used:
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    Heritage railway track and the two second rule?

    Is the two second rule the design standard that says (geometrical) element lengths should be no less than 2 seconds at line speed? A lot of the national network doesn't achieve that either and over point work it won't apply as you're constrained by S&C geometry. I've not heard a definitive...
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    HS2 High Salaries - Value?

    That's the headline-grabbing figure but what about all the other roles matacaster listed?
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    HS2 High Salaries - Value?

    Can you provide some figures for these roles? Otherwise it's a baseless argument.
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    Northampton to Milton Keynes closed in September

    An aerial view of the North connection works at the top of the page with the depot on the right.
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    Trivia: Platforms on one 'fast' line but not the other?

    Bedford (MML) has a platform on the Down Fast but not the Up.
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    Disconnected short section of track (Snodland, Kent)

    Housing development on the other side of the Medway. The satellite image in the original post is a little old - Peter's bridge is now complete. EDIT: Just spotted it's a very old thread!
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    Thanet Parkway updates

    Back to the original question, I'm reliably informed that there's signalling/level crossing commissioning that has caused some delay to the station opening. There are level crossings either side of the station both currently AHB (Automatic Half-barrier). One will be converted to an MCB...
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    Maximum platform gap?

    Group standards require the following - max 275mm horizontally, 230 vertically and 350mm diagonally. But invariably this isn't achieved everywhere for all rolling stock. 1681204292 It's now in GMRT 2173. RSSB Standards send me round in circles!
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    Which crossover has the highest speed limit?

    NR60 Mk2 H (32.365 - 34.5. Not sure on the Xing angle adopted) was being developed a few years back
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    HS2 construction updates

    Yep - It pays to have friends in high places!
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    HS1: is there a published gradient profile?

    Judging by the 0.442km marker on the end of the international platforms, I'd imagine it was the buffers on Platforms 5-10
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