# Suspension Bridge

Topics: Suspension bridge, Bridge, Parabola Pages: 3 (873 words) Published: February 7, 2013
Suspension bridge – A parabola
What is meant by suspension bridge?
A suspension bridge is a type of bridge in which the deck (the load-bearing portion) is hung below suspension cables on vertical suspenders. Outside Tibet and Bhutan, where the first examples of this type of bridge were built in the 15th century, this type of bridge dates from the early 19th century. Bridges without vertical suspenders have a long history in many mountainous parts of the world.

Structure of suspension bridge –
This type of bridge has cables suspended between towers, plus vertical suspender cables that carry the weight of the deck below, upon which traffic crosses. This arrangement allows the deck to be level or to arc upward for additional clearance. Like other suspension bridge types, this type often is constructed without false work. Can a suspension bridge be considered as a work on parabola? Yes, a suspension bridge can be called a work on parabola. As a suspension bridge is designed on parabola as the bridge is also in the “U” shaped figure as we can see it in our project. Parabola is a curved conical shaped open figure. Parabola can be defined in different ways. First, it is the graph of any quadratic function of the form y = ax2 + bx + c. Another way though, is to define it as the collection of all points that are equidistant from a line and a point not on the line. A parabola is a curve, much like a U shape. The most simple parabola is y = x^2.

and suspension bridge
Some facts about parabola and suspension bridge:-

The vertical line passing through the vertex is called the axis of symmetry. The eq. for the line is where D=0 Quadratic formula if ax2 + bx + c = 0 then x=-b±b2-4ac2a

Basic design of parabolic bridge:-

Dutch scientist Christian Huygens believed that two cables running between two towers could support weight that was...

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