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Laying Tracks

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Charter Member · 159 posts

What is the modern method(s) of laying track now? I've heard of screwspikes and such...seen pictures of concrete slabs instead of wooden ties and toher weird stuff.I though all railways used the method of wooden ties held down with straight iron spikes. Whats the deal with all this new stuff???/JayLaying Tracks – image 1 Laying Tracks – image 2 http://www.freewebs.com/peterbiltsrule Laying Tracks – image 3 Laying Tracks – image 4Site now with new Message Board!

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Charter Member · 617 posts

RE: Laying Tracks

Laying Tracks – image 5

It allows the load to be spread better over the right of way. With todays heavier cars, heavier locomotives, and higher speeds a more stable platform is needed.All of the new track and turnouts that my crew is installing is using roll plates and Pandrol clips instead of the standard tie plate and straight spikes. - Andrew

Laying Tracks – image 6

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Member since Apr-8-03 · 894 posts

RE: Laying Tracks

>What is the modern method(s) of laying track now? I've heard
>of screwspikes and such...seen pictures of concrete slabs
>instead of wooden ties and toher weird stuff.
>
>I though all railways used the method of wooden ties held
>down with straight iron spikes.
>
>Whats the deal with all this new stuff???/ What, Railroads aren't allowed to take advantage of modern technology? -Jeff

Union Pacific is my drug.

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Member since Oct-7-02 · 140 posts

RE: Laying Tracks

Here in the NYC Metro Area, the Long Island Rail Road, and my employer, Metro North, are replacing wooden ties with concrete "sleepers", using a track laying machine. Now, this TLM autmatically welds the joints together, thereby making the track continuous welded rail (or CWR). It also automatically levels off the track before welding the joints, thereby reducing the amount of juggling that occurs when going over the rail. This machine allows for a smoother ride overall. I haven't seen it myself yet, to be honest, but I've seen it's work, and all I gotta say is "wow!"Stuart D. Guberman
Chief Operations Officer
Atlantic Coastal Railway
http://www.atlanticrail.com
P32 & Electric MU Engineer
MTA Metro North Railroad
http://www.mta.info/mnr

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Charter Member · 315 posts

RE: Laying Tracks

There are a number of ways of building track. The simplest, cheapest method is to put lateral ties (sleepers) made out of wood, and use screwspikes to attach the rails.Since the early 1900s, certainly on fast lines, mainly in Europe, rails have not been mounted directly on to the ties, due to the forces acting on the rail/tie 'interface' when the fast, heavy trains of the time passed over. Instead, they are mounted on 'chairs', cast iron 'feet', which are spiked to the tie, and the rail laid between the two teeth, and secured by a wedge.More recently, using concrete sleepers, these chairs have been replaced by a newer type of baseplate, on to which the rail is 'clipped'. To find out all you could ever possibly imagine about these, look here: http://www.pandrol.com/But it doesn't stop with wood and concrete! ties can be made out of virtually anything, in the UK we're now starting to use steel ties, which have been long used in place of wood where rot/termites are a problem, and the UP is trialling 'composites' (ie Plastic) ties. Also, ties are not just in monoblock form (single units), but TGV lines use Duo-Block ties (two concrete ties, one for each rail, with a steel spacer linking the two) - see here: http://www.trainweb.org/tgvpages/track.html

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