DESIGN Flashcards
Center of mass and center of rigidity does not coincide
Torsional Shear Stress
Building which has a floor which is less than 70% as stiff as the floor above it, or less than 80% as the average stiffness of the three floors.
soft storey
lateral displacement of one level relative to the other level above or below
storey drift
The point which the resultant of the resistance to the applied lateral force acts
center of rigidity
The point on a structure through which the applied seismic force acts
center of mass
Refers to the flexibility of a structure
reciprocal of stifness
material condition that causes it to deform permanently even due to a slight increase of stress
Yielding
Fracture caused when a material is subjected to repeated cycles of stress or strain
fatigue
When a material is overloaded over a long period, it causes to deform continuously until fracture
creep
When the structure’s period earthquake period
resonance
it is nothing more than a column driven into the soil to support a structure transferring building loads to a deeper and stronger layer of soil or rock
Pile
Applied seismic force acts
Center of mass
Cross-section is same at any location across the long axis of the beam
Prismatic
Force needed to stretch or compress
Spring constant
Perpendicular distance between incident and emergent ray
Lateral displacement
Where maximum amplitude oscillation occurs
Resonance
Vertical members bearing horizontal force are located on another axis
Out of plane offset
Aimed to account for any unforeseen factor that may attribute to the torsional response
Accidental Eccentricity
The number of waves that pass through a point in one second
Frequency
Amount of time it takes on wave to cycle to pass the given point
Period
Sudden drop of shear strength
Liquefaction
Instrument that measures 2 record of details of earthquake (duration and force)
Seismograph