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Public Transportation and Smart Growth

jeff47

(26,549 posts)

6. They didn't buckle because of the train running over them.

Reply to Atman (Reply #1)

Fri Jul 13, 2012, 03:36 PM

Jul 2012

The steel expanded in the heat. Like all steel does. So the tracks grew longer. If you don't have enough expansion joints in the tracks the ends of the rails run into each other, and then the rail bends somewhere in the middle.

Train runs over the sudden bend, the wheels can't follow it, and you get a derailment.

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Too hot for the Washington Metro? [View all] marmar Jul 2012 OP

Sorry, I'm skeptical... Atman Jul 2012 #1

They didn't buckle because of the train running over them. jeff47 Jul 2012 #6

Still not buying it. Atman Jul 2012 #7

Well, it has happened in the past jeff47 Jul 2012 #8

Only 85 degrees? djean111 Jul 2012 #2

"Imaginary" global warming? marmar Jul 2012 #3

Sorry - forgot the sarcasm thingy. djean111 Jul 2012 #4

Whew. You scared me there for a minute. marmar Jul 2012 #5