Structural Forces and Tall Buildings

The structural force that puts one side of a structure under compression and the opposite side under tension is called ___________.

• Torsion

• Shear

• Bending

• Tension

A weight or source of pressure on a structure or object is called a __________.

• tension

• torque

• presence

• load

External and internal forces that stress a structure are called _________.

• dynamic loads

• static loads

• structural forces

• compressions

The difference between a static load and a dynamic load is that ______.

• static loads change frequently and dynamic loads do not.

• dynamic loads are fixed and static loads vary.

• dynamic loads change frequently and static loads do not.

• there really is not any difference between them.

Squeezing a ball or stacking bricks on top of one another are examples of ____________.

• tension

• compression

• torsion

• shear

What type of structural force causes a structure to be twisted?

• tension

• bending

• torsion

• compression

Structural forces being applied in opposite directions like a pair of scissors cutting through paper is called __________.

• compression

• bending

• shear

• torsion

What makes triangles a strong shape?

• Two sides are in compression against one side in tension.

• Two sides are in tension against one side in compression.

• The force is evenly distributed around the perimeter.

• Buttresses at each end hold it stable.

What joins the top cord to the bottom cord of a truss?

• cables

• arches

• webs

• beams

What is the advantage that arches have over triangles?

• They support loads at the corners.

• They support loads at the ends.

• They support loads at any point along their curves.

• They do not require abutments.