[PRCo] Re: "place curves"

[Phillip Clark Campbell]

----- Original Message -----

From: Derrick Brashear <shadow at gmail.com>
To: Pittsburgh Railways Group <pittsburgh-railways at dementix.org>
Cc: 
Sent: Tuesday, April 17, 2012 11:28 PM
Subject: [PRCo] "place curves"

I have to assume they meant crossovers.

http://news.google.com/newspapers?id=sx4bAAAAIBAJ&sjid=1kkEAAAAIBAJ&pg=3494,2192728&dq=east-carson+railroad-crossing&hl=en

article about ordinances referencing PRCo underliers in 1922

-- 
Derrick

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Mr.Brashear,

Turns could be substituted for curves which would include any hardware
necessary to make the turn.  Intersections 'evolved' over time depending
upon need.  This is generic for the details and seems better reporting than
what I have seen recently on similar matters.

More interesting is the reference to "underlying companies" of Prc suggesting
they had a life of their own -- these companies actually installed the turns seems
to be suggested.

As an aside:  These curves or turns would include turnouts and crossings thus
adding function to the intersection.

On street railways a crossover on double track allows a double-end
car to change directions.  These crossovers are generally trailing 'turnouts' in
normal operation. 

Some mainline RR fans claim a crossover doesn't include turnouts but only diamonds
like "Diamond" now Forbes crossing Smithfield.  Use of 'crossover' for same
indicates "up & Over" while 'crossing' indicates physical contact with another line.
Maybe I misunderstood what these RRers were saying!


 
Phil