the answer is steel
There are many different lengths of suspension bridges.
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.
Steel, light weight, stainless, sturdy, it will not rust and the lead to civilians dropping onto the tracks, or worse into the path of a train.
Their building material was mud.
The strongest metal commonly used in building construction is steel, particularly structural steel. It has a high tensile strength, making it ideal for supporting heavy loads and withstanding various stresses. Steel can also be alloyed with other elements to enhance its strength and durability, making it a preferred material for skyscrapers, bridges, and other structures. Its combination of strength, flexibility, and resistance to corrosion contributes to its widespread use in construction.
The initial popularity of the truss bridge was based primarily on its simplicity of construction and economics of building the bridges. In the 1800s, wood was cheap and plentiful. Wood was an ideal construction material because it was flexible and elastic to some degree and could withstand the variety of forces that acted against it. The early truss bridges were built from wooden timbers and were constructed in trestle forms where they were composed of a braced framework of timbers, piles or steel beams built to carry roads or railroads over a depression in the landscape topography.
Janet Kardon has written: 'Machineworks' 'Siah Armajani - Bridges - Houses - Communual Spaces - Dictionary for Building' '1967 At the Crossroads March 13 April 26, 1987' 'The Ideal Home, 1900-1920'
False
A material with a density of 0.2 g/ml is light, suitable for cushions in a couch since it provides softness without adding too much weight. However, it wouldn't be ideal for building a bridge due to its low mass and potential inability to support structural requirements.
Mesh is an ideal material to use that is durable.
In my opinion silk.
Triangles are an ideal shape for bridges because they provide structural stability and distribute weight evenly. The triangular configuration allows forces to be transmitted efficiently through the structure, minimizing deformation and ensuring strength. This geometric shape helps prevent buckling and allows bridges to span longer distances with less material, making them more economical and durable. Overall, triangles enhance both the safety and longevity of bridge designs.