FAQ

What type of bridge is best for connecting long spans?

What type of bridge is best for connecting long spans?

This is in contrast to the modern suspension bridge, where the cables supporting the deck are suspended vertically from the main cable, anchored at both ends of the bridge and running between the towers. The cable-stayed bridge is optimal for spans longer than cantilever bridges and shorter than suspension bridges.

When a bridge is made up of beams spanning between only two supports it is called?

Encyclopædia Britannica, Inc. When a bridge is made up of beams spanning between only two supports, it is called a simply supported beam bridge. If two or more beams are joined rigidly together over supports, the bridge becomes continuous.

What is the reason some bridge types are able to span longer distances than others?

When all the materials and circumstances are the same, suspension bridges can span longer distances than simple beam bridges. This is because the bridge deck, or roadway, is supported from above using tension in the cables and compression in the towers rather than just from bases.

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What is span bridge?

Span is the distance between two intermediate supports for a structure, e.g. a beam or a bridge. A span can be closed by a solid beam or by a rope. The first kind is used for bridges, the second one for power lines, overhead telecommunication lines, some type of antennas or for aerial tramways.

Which of the following bridges is used in the world’s longest bridges?

Completed

Name Length Completed
m
Beijing Grand Bridge Beijing–Shanghai High-Speed Railway 48,153 2010
Lake Pontchartrain Causeway (across Lake Pontchartrain in Louisiana) Guinness: Longest bridge over water (continuous), 1969 38,442 1956 (SB) 1969 (NB)
Line 1, Wuhan Metro Bridge Wuhan Metro 37,788 2009

What is bridge span?

What is a continuous span bridge?

Continuous span bridges cross from one side to the other with one structural beam truss, or arch. Cantilevered bridges are supported at one end or in the middle and are often held up by tensile suspension.

How does the length of the bridge affect its strength?

There was direct correlation between the length of the bridge and the weight pressed upon it. The longer the span of the beam, the more compression and tension would happen upon the beam. If there is too much weight on a beam of a certain length then it will break or snap.

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How does the bridge type relate to the distance it can span?

A span is the distance between two bridge supports, whether they are columns, towers or the wall of a canyon. A modern beam bridge, for instance, is likely to span a distance of up to 200 feet (60 meters), while a modern arch can safely span up to 800 or 1,000 feet (240 to 300 m).

Can a bridge be built over an ocean?

A floating bridge would interrupt the normal movement of ships across the Atlantic ocean. Also considering the strength of sea waves, tides and tsunamis, the bridge would have to be strong enough to withstand such natural forces.

Can a bridge be built across the ocean?

Chinese President Xi Jinping has officially opened the world’s longest sea crossing bridge, nine years after construction first began. The bridge cost about $20bn (£15.3bn) and should have opened in 2016. Construction has been dogged by safety issues – at least 18 workers have died on the project, officials say.

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Why don’t bridges have gates at both ends?

Only if there were gates at either end of the bridge, preventing water loss, would the level on the bridge rise, all the weight of displaced water would still be supported by the bridge, and you’d also have the added weight of the boats to support. But without gates there is no sudden increase in load as the boat moves onto the bridge.

What is the mass of the water above the bridge?

Assume that the level of water on such a bridge remains nearly constant as ships cross it, and so does the mass of water above the bridge—it might be 10,000 tons. A ship that travels the canal has a weight of 1000 tons.

Are there any physics problems that can be solved?

There are physics problems and physics puzzles. I like the puzzles. This collection encourages one to seek simple, clever and insightful methods to arrive at the answer. I especially like those that yield to only elementary mathematics. Some can also be solved by tedious formal mathematical analysis, but only as a last resort.

How much water is displaced by a boat in the canal?

Answer: The water displaced by a boat is only a small part of the much larger body of water in the entire canal.