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Thread: Kenya's new railway - BBC

  1. #1

    Kenya's new railway - BBC

    Kenya's new railway line will be diesel hauled. BBC piece.

    http://www.bbc.com/news/world-africa-40171095

    Looking at the pics the track is jointed rather than continuous welded rail. Could that be because it's a hot country and CWR is outside heat expansion limits, or cost factor?

  2. #2
    Senior Member DiveController's Avatar
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    Directly on the equator, 55C on my watch in the shade of the Turkana desert last time I was there, maybe a little cooler in the south where the line heads to Mombasa. That said, I thought only the ends of CPW were subject to expansion.... needs to look at the physics of that or maybe someone will comment on CPW. Anyway, I can tell you it beats the bus or anything else on wheels given the infrastructure
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    Senior Member DiveController's Avatar
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    For those who like physics, I suppose, but basically when the track is long enough or placed on tension during construction only the ends are subject to expansion, subsequent compression and buckling
    https://pwayblog.com/2016/11/06/cwr-...inted-anymore/

    More succinct explanation of how the thermal limits would be exceeded when exposed to the sun in equatorial regions
    http://vinchad.blogspot.com/2014/06/...ly-welded.html

    I suppose it might be possible to tension CWR to a higher stress free temperature to accommodate these regions?
    "Where Seventeen Railroads Meet the Sea"

  4. #4
    Hi DC

    I'd say its to do with cost, far cheaper to employ a few guys to bolt up 400 something miles than to import the welding equipment, tensioning equipment and pay the franchise cost- wages are incredibly low in Kenya & Ethiopia, and those poor people are getting into serious hock.....

    Eoin
    www.ecmtrains.com - Manufacturing the Model Dart

  5. #5
    Quote Originally Posted by murrayec View Post
    Hi DC

    I'd say its to do with cost, far cheaper to employ a few guys to bolt up 400 something miles than to import the welding equipment, tensioning equipment and pay the franchise cost- wages are incredibly low in Kenya & Ethiopia, and those poor people are getting into serious hock.....

    Eoin
    Far simpler to remove a section of jointed track if it needs replacing, too...

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    Senior Member DiveController's Avatar
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    True, Eoin. It would be cheaper to have less maintenance and more reliable running in Europe but you're right about the labor costs there. I would have thought that would have allowed the entire project to come in under budget, although maybe the road was laid by a specialist company rather than local labor.

    Good point garfield
    "Where Seventeen Railroads Meet the Sea"

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    Senior Member jhb171achill's Avatar
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    Fifty plus degrees!!!!!

    I'm struggling to cope with 28-30 in Portugal. Guess I won't be visiting Kenya!
    “An error does not become truth by reason of multiplied propagation, nor does truth become error because nobody sees it. Truth stands, even if there be no public support”

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  8. #8
    Quote Originally Posted by jhb171achill View Post
    Fifty plus degrees!!!!!

    I'm struggling to cope with 28-30 in Portugal. Guess I won't be visiting Kenya!
    Where I worked, we had an Environmental Chamber, if you timed it right with the weather and ran it flat out for a few days, you could get it down to -55C and up to +55C, both of which were fairly entertaining, even for short periods.

    In Cyprus, I (stupidly) put my hand on the wing of a matt grey Austin 1800 and managed to peel it off just before big damage was done, but it still blistered the whole palm and fingers. The blister popped at the the wrist and for a couple of days, I had the ability to inflate and deflate my hand at will, by blowing and sucking at the vent of the blister.

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  9. #9
    Senior Member jhb171achill's Avatar
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    I almost burned my hand on the steering wheel of a hired car in Spain once, and the internal temperature was "only" forty something.....

    I had made the mistake of NOT parking it in the shade!!!!
    “An error does not become truth by reason of multiplied propagation, nor does truth become error because nobody sees it. Truth stands, even if there be no public support”

    Never argue with an idiot. He will bring you down to his level, then beat you with experience.

  10. #10
    Hi DC

    Unfortunately & unofficially the bribe system is a daily part of business there, one agrees the cost of the item, when that's done you then negotiate the bribe before its handed over. My sis worked in Ethiopia, I visited her there and experienced this first hand in the bank of all places- after the 46 forms and documents were signed by me, the teller, and the counter sign, the teller then started to negotiate with me as to how much she was getting out of the transaction!!

    It's a fantastic place, fantastic people, but everything we know and do cannot be applied there- it's completely different!

    Eoin
    www.ecmtrains.com - Manufacturing the Model Dart

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