Essay about Bridges Types Assessment Of Bridges
There are five main types of bridges, these include the truss bridge, the arch bridge, the suspension, the beam bridge and the cable-stayed bridge. Each of these categories has various strengths, weaknesses and defining features and these are listed and clarified in the following report.
The Truss Bridge
Truss bridges are a reliable, economical and easy-to-build variety of bridges as they use a combination of tension and compression to provide a high level of stability. The effect of the high levels of tensile and compressive forces is that truss bridges are usually constructed from steel, reinforced concrete, timber and/or other high strength materials. The average span of a truss bridge is between 40 to 500 metres as the average truss bridge cannot endure the tensile and compressive forces that are encountered when building a bridge of those proportions. The lower amount of materials used in the truss bridge design causes all of the bridge to take stress which increases the reliability of the design. An example of this mechanism is –
Like the beam the truss has compression in the top chord, tension in the bottom chord and either tension or compression in the vertical and diagonal components.
Most trusses rely on this principle but their designs vary to allow for a better appearance or to make the bridge better…