Bridge Building: Structural Concepts

__________ are the weights and impacts a bridge may be subjected to.

• loads

• stresses

• materials

• components

__________ are the types of forces bridge components are designed to resist.

• stresses

• loads

• materials

• components

__________ are the properties of traditional bridge-building materials.

• materials

• loads

• stresses

• components

________ are traditional and modern bridge designs.

• bridge types

• loads

• stresses

• components

Miscalculation of the types and magnitudes of loads will not likely lead to catastrophic failure.

• True

• False

An engineer seldom knows the exact loads that a bridge may have to withstand.

• True

• False

A ___________ is a calculation of how much stronger the bridge is than it needs to be for an intended load.

• safety factor

• dynamic factor

• live load calculation

• dead load calculation

Which of the following is true about is the dead load?

• Sometimes called gravity load

• They are permanent, constant and stationary

• Easy to estimate

• Includes the weight of the bridge itself.

The _______ load is the weight of the people, trucks, snow that the bridge has to support.

• live

• dead

• thermal

• dynamic

Safety factors for live loads tend to be _________ than those for dead loads.

• higher

• lower

• the same

• exactly 3.2 times more