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What innovation or invention made suspension bridges possible?
Suspension bridges are one of the oldest engineering forms, dating back to the 4th century. Modern suspension bridges were made possible by the web truss, invented by John Augustus Roebling. The web truss made a very sturdy, rigid structure that could withstand storms, wind forces, and heavy loads.
A advantage of a suspention bridge?
They can be used on fairly long span bridges compared to suspension bridges by using pylons in between. They have better stability against wind loads. They can be constructed in steps working on their own decks.
What is a major problem for suspension bridges?
Although suspension bridges are among the longest bridges, and most are well-built, the design does include features that make them more susceptible to failure. Rather than a rigidly-connected skeleton, a cable bridge is held in place by its own weight, which maintains a constant tension. The cables supporting the roadway are balanced, and if any fail, the change in weight can cause a complete collapse. Cables must be inspected regularly for corrosion, wear, or slippage. Shifts in the foundation of any bridge can cause it to fall, but because there are fewer supports in the cable bridge, any change will tend to have greater effect. High winds can cause structural failure of a poorly-designed bridge by causing swinging oscillations known as "aeroelastic flutter." This causes a twisting motion that can warp or crumble the bridge deck.
Forces that act on a bridge?
Depends on the type of bridge. Suspension bridges, for example, have tension holding them up. All are acted upon by gravity, and to a lesser extent, the force of contact with the wind.
Why did engineers choose suspension bridge to crosses River Thames in London?
Engineers chose a suspension bridge for crossing the River Thames in London primarily due to its ability to span long distances without the need for numerous supporting piers in the water, which could disrupt navigation and shipping. The flexibility of suspension bridges also allows them to withstand dynamic forces, such as wind and traffic, making them ideal for urban settings. Additionally, the aesthetic appeal of suspension bridges can enhance the visual landscape of iconic locations like the Thames.
One problem with wind energy as a major source of electricity is?
The problem with wind energy is that it does not produce much electricity. Wind does not flow at all places. So having wind energy as a major source of electricity is not a option.
What is one problem with wind energy as a major of electricity?
the cost of land in populated areas.
How do high winds affect bridges?
i think its because the wind is blowing to hard.
What is a problem with using wind to produce energy?
The two major disadvantages of wind power include initial cost and technology immaturity.
What does a spiral do on a car radio antenna?
Wind noise reduction and stability. When engineers first designed tall circular towers (such as industrial boiler flues for factories), they ran into a problem - wind currents whipping round the towers would create strange forces that shook the tower from side to side, undermining its structural integrity. They discovered that they could solve the problem by adding a spiral round the top of the tower. It breaks up the wind currents and balances them out. The same problem and solution has been found in some steel suspension wires on bridges. So, the spiral on a car antenna is there solely to reduce wind noise and stop the antenna vibrating. It has absolutely no effect on the antenna's ability to receive radio frequency signals.
What is an example of torsion?
A suspension bridge twisting in the wind.
One problem with wind energy as a major source of electricity is what?
Intermittency is a major issue with wind energy, as it relies on variable wind patterns. This can lead to fluctuations in electricity generation that need to be balanced out with other sources. Additionally, wind turbines can have adverse impacts on local wildlife and landscapes.
