I am trying to do an assignement however I can't figure out what is the purpose for using a train tunnel. does anyone know why are train tunnels made? what is the purpose of the invention of train tunnels?
2006-10-16 04:42:14 · 5 answers · asked by www.mrcooldude.com 2 in Science & Mathematics ➔ Other - Science
Trains have a very limited ability to climb grades due to metal wheels on smooth metal tracks pulling a huge amount of dead weight behind them. Building tunnels eliminates miles of track building and grade excavation and results in a cost savings in construction, distance traveled, and fuel expended. In addition they save time.
2006-10-16 04:52:56 · answer #1 · answered by yes_its_me 7 · 1⤊ 0⤋
Trains are heavy, so it is hard for them to go up or down steep grades. They are also limited how sharp a turn they can make.
Sometimes a tunnel is the only solution. Tunnels in combination with bridges, (trestles)
2006-10-16 04:53:18 · answer #2 · answered by jekin 5 · 0⤊ 0⤋
All these answers are great, but one thing that I can think of is avoiding railroad crossings. There are a lot of train vs. car crashes every year. More tunnels would mean less crossings.
2006-10-16 06:54:39 · answer #3 · answered by Anonymous · 0⤊ 0⤋
trains only climb a gradient of 1 in 16 so unless you have a very long track you couldnt get enough height to climb the hill/mountain. the only other solution is 2 go round it again needing a longer track
2006-10-16 05:03:15 · answer #4 · answered by richeboi 2 · 0⤊ 0⤋
It's easier to go through a mountain than over it. This is especially true for trains, which require long turning radii (so, no tight switchbacks like you can do for cars) and also require fairly shallow grades (degree of climbing) coming up, but especially coming down.
2006-10-16 04:49:16 · answer #5 · answered by Brian L 7 · 0⤊ 0⤋