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Bridges and Tunnels
A bridge is a link between two places, such as over a river, a road or a depression, that caters to pedestrians and/or vehicles. A tunnel is an underground link between two places, often underneath a riverbed, for pedestrians and/or vehicles.
4,393 Questions
When should each type of bridge be used?
We are a species of bridge builders. Since time out of mind, humans have engineered structures to surmount obstacles, such as, say, Jiaozhou Bay. The body of water is now home to a 26.4-mile (42.5-kilometer) bridge that links the busy Chinese port city of Quingdao to the Chinese suburb of Huangdou.
We've tamed steel, stone, lumber and even living vegetation, all in an effort to reach the places, people and things we desire.
Although the concept itself is as simple as felling a tree across a creek, bridge design and construction entails serious ingenuity. Artists, architects and engineers pour vast resources into bridge construction and, in doing so, reshape the very environment in which we live.
Which metal would be the best to make a bridge from?
I think steel Because it is versatile Building material
What is the Channel Tunnel popularly called?
The Channel Tunnel is normally just called the Channel Tunnel.
Road signs say "Channel Tunnel" on the English side, and "Tunnel sous la Manche" on the French side.
Advantages and disadvantages of Business growth?
Advantages:
- Higher profit for owners
- More status , prestige and wages for managers
- the business controls a larger share of the market
- economies of scale
Disadvantages:
- Weaker communication
- loss of control
- financial challenges as larger businesses require more money
What was wrong with iron bridges?
There is nothing inherently wrong with iron as a bridging material, just as there is nothing inherently wrong with virtually anything used to make a bridge, not excluding fiber ropes and wood used by the Incas. Cast iron was plentiful and easy to work and was used in many types of bridges from the 18th well into the 19th Centuries. Some beautifully crafted iron bridges are still in use today. Technically, steel is just iron with more of the impurities removed. Steel has greater tensile strength (resistance to breakage) than iron but until the Bessemer process was invented in the mid-19th Century it was harder to make, so iron was the material of choice. Iron and steel do rust, but paint helps to resist weathering, and any material exposed to weather will eventually deteriorate unless maintained.
A group of identical individuals that always produce offspring of the same phenotype when intercrossed.
Where does the confederation bridge start?
it starts in new brunswick and goes to prince edward island. 12 kilometers
How long is the bear mountain bridge?
1,641 feet. Or 497 meters. http://site2.wikianswers.com/templates/images/saveBtn_enable.gif?v=34812
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