The beginning of climate change
Brings back the old Physics class. Mass Coefficient Delta Temperature = MCDT. The Brooklyn bridge is 6000 feet long, so 14 feet is only 0.20% of the total distance. Seems unlikely, but who knows.
A truss is not the whole bridge. It is just one section of steel. So maybe 100 feet. so around ~30 meters
but lets for a moment assume it was -40°C ( or F)
A warm day is only 34°C so that would be 74° of swing.
The coefficient of expansion for steel is on the order of 13x10-6 per degree C.
It just can't have that kind of impact. that hundred foot piece of steel would contract 0.028 meters about an inch or so.
Now let's assume the author wasn't real clever and confused trusses with cables.
The cables holding up the bridge are continuous. 1,000 meters of cable could contract a meter.
It's longer but still not 14 ft.
but lets for a moment assume it was -40°C ( or F)
A warm day is only 34°C so that would be 74° of swing.
The coefficient of expansion for steel is on the order of 13x10-6 per degree C.
It just can't have that kind of impact. that hundred foot piece of steel would contract 0.028 meters about an inch or so.
Now let's assume the author wasn't real clever and confused trusses with cables.
The cables holding up the bridge are continuous. 1,000 meters of cable could contract a meter.
It's longer but still not 14 ft.
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Mr. Eryozgatliyan
California - Southern California S2000 Owners
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Jan 11, 2008 10:25 PM










