Engineering Test

The lower columns of a skyscraper are squeezed by the heavy weight above them. This squeezing force is called.

• Compression

• Tension

What is the force that stretches a material apart?

• Compression

• Tension

What is the engineering term for a twisting force?

• Torsion

• Seismic

• Thermal

What is bending force?

• The top side of the material is pulled apart in tension, and the bottom side is squeezed together in compression.

• Causes parts of a material to slide past one another in opposite directions.

What is Shear force?

• The top side of the metal bar is pulled apart in tension, and the bottom side is squeezed together in compression.

• Causes parts of a material to slide past one another in opposite directions.

The weight of the structure itself & anything permanently attached to the structure is part of its ___________load.

• Static or Dead

• Dynamic or Live

Things that move around in or on a structure, like people, furniture, and cars, are all examples of __________ load.

• Static or Dead

• Dynamic or Live

When used properly, ________ are the most stable and rigid shapes used in construction today.

• Rhombuses

• Trapezoids

• Triangles

What is a truss?

• 2 sides of the bridge and it’s constructed of interconnected triangles.

• It is constructed of interconnected squares.

• It is constructed of parallelograms.

The 2 trusses rest on what part of the bridge structure?

• Concrete abutments

• widgets

• Steel stakes