structure and forces

An object that provides support is called ________.

• a structure
• a design
• the base
• supportive

The function of a structure refers to ___________.

• its overall design
• its use or purpose
• how it is built
• the technological requirements

What is torsion force?

• a squeezing force

• A twisting force

• a sliding force

• a pulling force

Bridge A collapsed because there was too much traffic on the bridge. The bridge collapsed due because

• it could not support its dead load

• it could not support its live & dead loads

• it could not support its live load

• the bridge was hit by wind

Bridge B collapsed under its own weight. What cause the collapse?

• the live load

• the environmental load

• too much traffic on the bridge

• the dead load

What is tension?

• a sliding force

• a twisting force

• a squeezing force

• a pulling force

What is compression?

• a sliding force

• a twisting force

• a squeezing force

• a pulling force

What is shear force?

• a twisting and pulling force

• a twisting force

• a squeezing force

• a pulling force

What is a dead load?

• The weight of anything not permanently attached to the structure.

• Cars

• The weight of the structure.

• People

What is a live load?

• the deck

• The weight of anything not permanently attached to the structure.

• The weight of the structure.

• Cables and Towers