RE: If you were in a government Cyber-warning center
Conduit? What's THAT ;-? Only exposed (bridge crossing, etc) parts are in conduit.
Conduit is typically used along the entire length of most railway builds I have seen. Most recent railway builds have been multi conduit projects with up to 12 x 1.5 inch HDPE conduits plowed in by rail mounted cable plow. Your correct that steel conduit is used at bridge crossing or other exposed locations. I understand that when railway routes became popular some years ago for telecom that some railway/telecom companies did some research to understand where to place the cable with respect to the rail to minimize damage in a derailment. Apparently by placing the conduit 3-4' down and relatively close to the rail (ie: 2-3' from the rail) the steel rail will act somewhat as a shield to minimize exposure of the cable in a derailment. (ie: the car has to rip up the trackage and move the dirt to get to the cable) -Randy
Unnamed Administration sources reported that Randy Neals said:
Most recent railway builds have been multi conduit projects with up to 12 x 1.5 inch HDPE conduits plowed in by rail mounted cable plow. Your correct that steel conduit is used at bridge crossing or other exposed locations.
I call the HDPE stuff "duct" and reserve "conduit" for material that passes the magnet test; YMMV. BTW, a 18" piece of HDPA is a useful tool in some neighborhoods.. even BEFORE it's filled with ballast.
Apparently by placing the conduit 3-4' down and relatively close to the rail (ie: 2-3' from the rail) the steel rail will act somewhat as a shield to minimize exposure of the cable in a derailment. (ie: the car has to rip up the trackage and move the dirt to get to the cable)
That's quite rational. But I'm still glad I don't have to dig that. There are pictures of ATT with a honking big digger wheel going across Kansas et. al. I keep saying to myself "This is a BIG country and there are LOTS of rocks down there..." The pole crew in front of my house "Seaned" on the 5" water main. To get to it, they pulled out most of a glacial boulder the size of a Ford Van and carted it away. -- A host is a host from coast to coast.................wb8foz@nrk.com & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433
participants (2)
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David Lesher -
Randy Neals