Bridges how they work

There are a variety of bridges, starting from the 3 main bridges; the suspension, arc and the beam bridge. As simple as these bridges may seem, they must be made with precise measurements and strong materials. Expectations for bridges are high. It is compulsory for the bridge to withstand severe weather and carry all cars, buses, motorcycles and trucks travelling along the bridge safely. One car on a bridge can equal to the weight of a cargo ship, therefore if the bridge is not stable, injuries will be made and in unlucky cases, lives may be lost. Bridges are also expensive to build, with something as simple as a pedestrian bridge costing up to $250,000. 

The task is to discuss how bridges are made and how they can be used in tough conditions. Majority of the bridges out there can out stand bizarre temperatures and wild storms. In this case, American cities experience bad earthquakes causing the bridges in America trauma and leaving them fragile to collapse.

Bridges take a long time to build, from up to months to years for a bridge to be built. Working on one bridge alone can take up to 2,500 workers. 

To prevent bad conditions and ensure safety, there are two steps to which workers use to make the perfect bridge. Step 1 is design and placement; This determines what type of bridge is best suited for the placement/area the bridge would stand. Step 2 is bridge construction; Once the design for the bridge is finalised, the actual building process will begin. This will be where workers assembles the materials used to support the bridge. Support is one of the major points for a bridge to stand. It determines the structure and the lives of the people who cross the bridge.

As simple as bridges may seem, the amount of effort architect designers and construction workers put into creating one is astounding. With bridges built so surely, we may cross them with our vehicles confidently without the worry of the bridge crashing down into the ground or the depths of the water beneath. The view from bridges and the people involved in the making of bridges is definitely something to be admired by us.

Introduction written by Tsae Mann, task written by Ruby, process written by Juliette, evaluation written by Juliette, conclusion written by Tsae Mann, teacher's page created by Ruby, credits written by Tsae Mann.