MCA: Bridges

The first bridge was made _____________.

• from Steel

• from Wooden Beams

• from Brick

• in Nature

A Truss Bridge is made up of which type of shape?

• Rectangles

• Squares

• Triangles

• Octagans

The calculation for bridge efficiency is

• WEIGHT of Bridge / LENGTH of Bridge

• LENGTH of Bridge / WEIGHT help before failure (load)

• HEIGHT of Bridge / WEIGHT of Bridge

• Load the bridge held before failure / Weight of bridge

Why do engineers make truss bridges? **(Select all that apply)

• inexpensive to build

• strong

• provides support over a long span

• stable

_________ is defined as part of the structure which supports traffic and includes deck, slab and girders

• Substructure

• superstructure

• abutment

• deck

___________ is part of the structure, ie piers and abutments, which supports the superstructure and which transfers the structural load to the foundations.

• superstructure

• substructure

• deck

• abutment

__________ is the bridge floor directly carrying traffic loads

• superstructure

• substructure

• deck

• abutment

__________ is the part of the structure which supports the superstructure at its extremities and retains earthworks.

• superstructure

• substructure

• abutment

• deck

What forces act on a bridge? (Circle all that apply)

• Torsion

• Compression

• Tension

• Shear

__________ is the application of power, pressure, or exertion against an object that causes it to become squeezed, squashed, or compacted.

• Compression

• Tension