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| Re: Amtrak Announces Order for complete replacement of 20 Acela Express trainsets (1192196) | |||
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Re: Amtrak Announces Order for complete replacement of 20 Acela Express trainsets |
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Posted by WillD on Sat Dec 15 00:04:24 2012, in response to Re: Amtrak Announces Order for complete replacement of 20 Acela Express trainsets, posted by Broadway Lion on Fri Dec 14 14:55:24 2012. As ever you ignored the actual discussion in this subthread. The discussion was not the construction of new low platforms versus the construction of new high platforms. It was the replacement of low platforms with high platforms for the sake of allowing the foolishly high platform only Acelas to be cascaded to Regional services. Thus the low platforms are free, because they exist, and the high platforms you'd have Amtrak blow their scarce capital funding on are infinitely more expensive.Yes there is a slab, and over the length of a train ground needs to be made level no matter which solution you use. A lot easier, and a LOT cheaper to do that with cut and fill than with driven piles and a precast platform on which the platform will sit. You need ramps that go over or under the tracks to serve the trains on the other platform, Or you can just have the passengers use a grade crossing. There's no requirement that pedestrian flow be grade separated. Ground level platforms, such as I am used to on Long Island, such as we have here in North Dakota cannot accommodate low floor trains in any event and will need to be built up to match the floor level of the equipment to be used. Sure they can, at least to the same degree a high platform can with bridge plates. And GO Transit has an even better solution than the bridge plates most systems use:  What LION says is if you must build a new station then the height of the platform is irrelevant to the overall costs of construction. Nobody is talking about building new platforms. We're talking about how you'd have Amtrak squander their meager funding on wholly unnecessary rebuilding of perfectly good stations simply because you cannot bear to part with the Acelas. LION says:Climb out of the 19th Century and join the 21st Century before you get run over by a train. High platforms are obsolete. The only reason to build high platforms is to allow space for underfloor equipment on the railcars serving those stations. That is no longer a requirement with modern low floor EMUs, DMUs, and railcars and there's no reason to construct new build high platforms in territory currently equipped with low platforms. |
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