Forces acting on structures

What is a force?

• A push or a pull that causes an object to change its movement or shape.

• A push or twist that causes an object to change its movement.

• Something from Star Wars

What is a static load?

• A load that causes static electricity

• A moving load

• A load that is constant (does not change)

What is a dynamic load?

• A force that changes or moves.

• A constant load

• An energetic and out-going force

Compression is a force that ________

• squeezes material together

• twists materials

• pulls materials

• rips materials

What type of force is torsion?

• Twisting

• Pushing

• Ripping

• Pulling

What type of force is shear?

• Twisting

• Pulling

• Ripping

• Pushing

Tension is a twisting force.

• True

• False

External forces such as extreme weather pose a constant threat to the structural reliability of structures.

• True

• False

How does a structure maintain structural reliability?

• When the internal forces of a structure are greater than the external force

• When the external forces of a structure are greater than the internal force

• When the structure is there for you when you need it most.

The following are all examples of internal forces except...

• Compression

• Tornado

• Tension

• Shear