Why triangles are very important in the truss bridges?

Answer 1

Engineers have been building triangular bridges, because it is the most common, and one of the most durable when it comes to handling weight. Because it is in a triangular form it is aero dynamic, and if the truss can hold, it will survive strong winds and small earthquakes?

Answer 2

Triangles are the better option to use as legs of a bridge because they widen at the bottom, giving more support. It essentially gives it double the amount of legs, since each one has two points at the bottom.

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If the above picture was a bridge, see how each "leg" ends with two points touching the ground? This is why it is more supportive.

Answer 3

Triangular supports strengthen towers and bridges by preventing collapse, or racking, of rectangular structures.

Without the center triangular beam, these rectangles would be miore likely to collapse like a 'house of cards' from relatively light static and dynamic loads.

Answer 4

Because the triangle is a very strong shape.

Answer 5

because it makes the bridge more strong ,and truss bridges are very long so it is important