PSAD TERMS

Identify the state of stress in a material described as follows: Stress at Failure

• Proportional Limit

• Ultimate Strength

• Yield Strength

• Rupture Strength

Highest Ordinate in Stress-Strain diagram

• Proportional Limit

• Ultimate Strength

• Yield Strength

• Rupture Strength

An Appreciable elongation or yielding of the material without any corresponding increase of load.

• Proportional Limit

• Ultimate Strength

• Yield Strength

• Rupture Strength

What do you call the retarding force acting opposite a body in motion

• Inertia

• Dynamic

• Static Friction

• Kinetic Friction

It is the displacement of one level relative to the level above or below

• Fatigue

• Torsional Shear Stress

• Story Drift

• Creep

Occurs when the center of mass and rigidity do not coincide

• Fatigue

• Torsional Shear Stress

• Story Drift

• Creep

If the structure is subjected to a cycle of stresses and _____ , it causes the beam to have sudden ultimate

structure

• Fatigue

• Torsional Shear Stress

• Story Drift

• Creep

It is measured by the Richter scale

• Ground Acceleration

• Intensity of observed effects

• Magnitude of Earthquake

• Resonance

it is measured by a Seismometer

• Reference Points

• Attenuation

• Components of ground motion

• Actual Displacement

Besides the epicenter, it describes the location of the Earthquake

• Geologic Formation

• Fault Line

• Focal Depth

• Dip Angle