Amtrak7 Posted June 28, 2011 Share #1 Posted June 28, 2011 Go to the MTA home page, in the MTA news box click on tab 2: We are debuting a new weekly feature that will highlight the work that we do each weekend to keep our transit system running reliably, starting with last weekend's work on the N Line.... Best of all, these photos are free to use!!! (CC-BY, just give attribution) Link to comment Share on other sites More sharing options...
chrisliz09 Posted June 28, 2011 Share #2 Posted June 28, 2011 wow those new tracks look so cool thats what they did in the bronx on the wpr line but not concrete Link to comment Share on other sites More sharing options...
m7zanr160s Posted June 28, 2011 Share #3 Posted June 28, 2011 Why the dip in the center of the ties? Link to comment Share on other sites More sharing options...
mark1447 Posted June 28, 2011 Share #4 Posted June 28, 2011 wow those new tracks look so cool thats what they did in the bronx on the wpr line but not concrete Concrete will pretty much be used on embankments and open-cuts. The ELs will still get wood. Concrete last longer then wood. Not sure why ELs are not getting it. I'm glade the NYC Subway Embankment/Open-Cut Lines will get them. I thought only MNR/LIRR was, but I was wrong! Link to comment Share on other sites More sharing options...
Amtrak7 Posted June 28, 2011 Author Share #5 Posted June 28, 2011 Well, MBTA is doing the exact opposite on its commuter rail lines—defective concrete ties are being replaced with wood, not new concrete. Link to comment Share on other sites More sharing options...
Law Posted June 28, 2011 Share #6 Posted June 28, 2011 Concrete ties aren't new to NYCTA. They had concrete ties on Brighton for years (3?), however only at the stations. Link to comment Share on other sites More sharing options...
MattTrain Posted June 28, 2011 Share #7 Posted June 28, 2011 Concrete will pretty much be used on embankments and open-cuts. The ELs will still get wood. Concrete last longer then wood. Not sure why ELs are not getting it. I'm glade the NYC Subway Embankment/Open-Cut Lines will get them. I thought only MNR/LIRR was, but I was wrong! I think Concrete ties for rails aren't a good idea, it's heavier than wood, and I don't think the Els would support it, (correct me please if I'm wrong) Link to comment Share on other sites More sharing options...
Eric B Posted June 28, 2011 Share #8 Posted June 28, 2011 With the els, there is too much vibration for the concrete. They even had problems on the Rockaways viaducts (which are basically els filled in with concrete and ballast), but were able to resolve that somehow. Yet a totally open el would have too much vibration. They've also been testing plastic ties. That's what they should use on els, then. Link to comment Share on other sites More sharing options...
overclocked Posted June 28, 2011 Share #9 Posted June 28, 2011 With the els, there is too much vibration for the concrete. They even had problems on the Rockaways viaducts (which are basically els filled in with concrete and ballast), but were able to resolve that somehow. Yet a totally open el would have too much vibration. They've also been testing plastic ties. That's what they should use on els, then. What about those rubber/plastic fill-ins they used on Ocean Parkway? What is their purpose? To eliminate vibration? Link to comment Share on other sites More sharing options...
Eric B Posted June 29, 2011 Share #10 Posted June 29, 2011 I don't know what you're referring to. Link to comment Share on other sites More sharing options...
overclocked Posted June 29, 2011 Share #11 Posted June 29, 2011 Few years back during Ocean Parkway Rehab, they completely removed the gravel and wooden ties, filled the whole structure with concrete and installed new rails with short ties. The interesting part was that, the ties were encased with this rubber/plastic form. image Not sure, but I think I saw this on Culver Viaduct as well Going back to my original question, What is the purpose of those "things"? Thank You!!! Link to comment Share on other sites More sharing options...
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