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Old 02-23-2013, 04:23 PM
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Default Some new infrastructure under NYC



The Atlantic Monthly collection of photos of the construction of the underground extension of the LIRR to Grand Central Station.
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Old 02-24-2013, 11:52 PM
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Default Re: Some new infrastructure under NYC

Good stuff, Michael! Thanks.

I've always been fascinated with tunnel boring machines and the work they can do.

This project involved seven of them. It's hard to find the exact specs on each, but at least one of them (T.E.S.S.) weighs in at about two million pounds, and has eight electric motors producing about 2700 hp to drive the hydraulic motors that spin the cutter head.



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Old 02-25-2013, 01:22 PM
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Default Re: Some new infrastructure under NYC

John,

How hard can it be to get specs on one of those machines? Can't you just go out to your shop and read the data plate on one of yours?

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Rutager
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Old 02-25-2013, 03:53 PM
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Default Re: Some new infrastructure under NYC

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Originally Posted by rutager View Post

How hard can it be to get specs on one of those machines? Can't you just go out to your shop and read the data plate on one of yours?
No can do, Rutager, I don't have anything over 2000 hp.

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Old 02-25-2013, 05:37 PM
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Default Re: Some new infrastructure under NYC

Those diggers have electric motors? Must need some serious extension cords!!
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Old 02-25-2013, 09:16 PM
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Default Re: Some new infrastructure under NYC

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Those diggers have electric motors? Must need some serious extension cords!!
Jesse, I think the boring machine is run entirely by hydraulic motors and rams, and that the hydraulic pressure is created by pumps driven with electric motors. So, maybe only the pressure lines have to be long.

If I'm wrong about this someone please jump in and correct me.

Here's an interesting video produced by Herrenknecht AG, the German company that built the boring machines for the Queens project:




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Old 02-26-2013, 01:35 AM
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Default Re: Some new infrastructure under NYC

Okay, my mind is totally blown!
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Old 02-26-2013, 01:54 AM
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Default Re: Some new infrastructure under NYC

Sure hope it wasn't The Atlantic that called a certain train terminal "Grand Central Station".

Even some Alaskans know there ain't no such place.
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Old 02-26-2013, 02:59 PM
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Default Re: Some new infrastructure under NYC

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Sure hope it wasn't The Atlantic that called a certain train terminal "Grand Central Station".

Even some Alaskans know there ain't no such place.
Nope, it was me


Thanks for that video John.
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Old 02-26-2013, 06:42 PM
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Default Re: Some new infrastructure under NYC

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Nope, it was me
Apparently, you're not alone, Michael.

From Wikipedia:

"Grand Central Terminal (GCT)—colloquially called Grand Central Station, or shortened to simply Grand Central—is a commuter rail terminal station at 42nd Street and Park Avenue in Midtown Manhattan in New York City, United States.

Although the terminal has been properly called “Grand Central Terminal” since 1913, many people continue to refer to it as “Grand Central Station”, the name of the previous rail station on the same site, and of the U.S. Post Office station next door, which is not part of the terminal. It is also sometimes used to refer to the Grand Central – 42nd Street subway station, which serves the terminal."

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