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Sydney Harbour Bridge

What is the piece at the top of an arch bridge called?

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Answered 2011-01-11 17:32:30

a key stone

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the top of the arch under goes tension and horizontal thrust


They used a keystone. It is a wedge-shaped piece at the top of an arch. It is the final piece placed to lock in the other stones of the arch.


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The keystone on top, which should be at the centerThe Arch distributes the weight down to the supporting upright.


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The bridge was the city's tallest structure until 1967. According to Guinness World Records, it is the widest long-span bridge in the world and is the highest steel arch bridge with the top of the bridge standing 134 meters (429.6 feet) above the harbor. It is also the fourth-longest spanning-arch bridge in the world.


No. Sydney Harbour Bridge is an arch bridge. It is the world's largest steel arch bridge, measuring 134 metres (429.6 ft) from top to water level, although it is not the longest. Up until 2006, it was also the world's widest long-span bridge, at 48.8 metres wide.


The Sydney Harbour Bridge is an arch bridge. It is the largest steel arch bridge in the world, measuring 134 metres (429.6 ft) from top to water level, although it is not the longest. Up until 2006, it was also the world's widest long-span bridge, at 48.8 metres wide.Originally, the bridge's designer, JCC Bradfield, proposed a suspension bridge, then a cantilever bridge, which was the first proposal accepted. After that, Bradfield turned his sights towards an arch bridge, after travelling overseas and seeing the developments in light steel which made a steel arch bridge such a possibility.


The total length of the Sydney Harbour Bridge including approach spans is 1149 metres and its arch span is 503 metres. The top of the arch is 134 metres above sea level.


The top of the arch is 134 metres (432 feet) above sea level.


The "domed arch" is the high ceiling where the light bulb is hanging down on the Underground Tour. Climb the wire to get the torn Dragon Face piece at the top of the arch.


Cracks in the rock got filled with water causing the expansion of the cracks. then rocks get broken off as it expands. The arch is formed only when all the rock is removed and stronger, harder rock is left over making the arch. Then (this will happen to the Green Bridge of Wales someday) as the arch gets bigger and biggger and bigger until the top of the arch collapses leaving something called a stack and then as the stack erodes leaving only a stump


The arches are the curved doorways at Golden Harbor. When you light the street lights there (4th, then 2nd, then 1st), the map piece appears at the top of the third arch.


The arches are the curved doorways at Golden Harbor. When you light the street lights there (4th, then 2nd, then 1st), the map piece appears at the top of the third arch.


Sydney harbour bridge is the widest long-span bridge in the world and is the highest steel arch bridge with the top of the bridge standing 134 meters (429.6 feet) above the harbour. It is also the fourth-longest spanning-arch bridge in the world.sydney harbour bridge climb is a tourist attraction. Opera house is near to sydney harbour bridge only ,which is another tourist attraction .


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The Sydney Harbour Bridge is the largest steel arch bridge in the world, though not the longest. It is 48.8 m wide, and the top of the bridge stands 134 metres above the harbour.


Climb the wire from the light bulb in the arch, then jump hard to the right from the top.



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Jump up to the hanging light bulb and climb up the wire. When you are at the top, you should be able to jump hard to the right, off the wire, to get the piece.


An arch that is pointed at the top. Think 'gothic windows'


Yes. The Sydney Harbour Bridge is the largest steel arch bridge in the world, although it is not the longest. The top of the bridge stands 134 metres above the harbour. At 48.8 m wide, it was the widest bridge in the world up until 2006.


In the large domed arch, climb up the cord from the light bulb. When you are at the very top, jump hard sideways (to the right) to reach the picture piece.


Sydney harbour officially opened in 1932, Sydney harbour bridge is the world's widest long-span bridge and it is tallest steel arch bridge, measuring 134 metres (429.6 ft) from top to water level.Bridge length is 1,150 m.



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