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Structures


Railroads require fairly flat and level track in order to operate. Generally speaking, the track should have no more than a 2% grade, meaning that it can rise/fall no more than 2 feet for every 100 feet of distance (equals 1/4" of rise/fall per 48" of distance).
But terrain is rarely flat, so railroads must bridge over (or fill in) low spots and tunnel under (or excavate) high spots.
Real railroads try to avoid tunnels and bridges because they're expensive to build and maintain, but I'm doing the reverse - finding any excuse to build them - because I think they're interesting!

Here are the structures that I'm currently working on and/or planning to build:
Item When Built % Complete Description
Deck Truss bridge 10/03 - 6/04 100 20 feet long, crosses a small seasonal stream
Covered bridge 0 ? feet long, based on a local historic covered bridge
Big Trestle 8/08 - ongoing 1 100 feet long, 8 feet tall
Low Trestle 10/07-8/08 100 60 feet long, 2 feet tall, curved
Tunnel 9/03 - 8/10 100 50 feet long, curved, cut-and-cover
Retaining wall 10/04 100 30 feet long, routes track around a large tree
Ballast Bunker 4/09 100 Holds 3 yards of ballast, loads it into the hopper
Station 2004 95 Also known as the ground level of the kids' playhouse


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