r6ot-2026-02-06_12_45_00-design-terms.pdf
r6ot-2026-02-06_12_45_00-design-terms.pdf
Soft storey - A building which has a floor which is less than seventy percent as stiff as the floor immediately above it, or less than eighty percent as stiff as the average stiffness of the three floors above it.
Toughness - to absorb energy in plastic range
Resilience - to absorb energy in elastic range
Ductility - to deform in plastic range without breaking
Ground displacement - measured by a seismometer.
Elastic Limit - greatest stress applied to elastic body without permanent deformation
Elasticity - tendency of solid materials to return to their original shape after being forces are applied on them. When the forces are removed, the object will return to its initial shape and size.
Liquification - sudden drop of shear strength
Center of rigidity - resultant of the resistance to the applied lateral force act
Center of mass - point on a structure through which the applied seismic force acts
Orthotropic material - The material composition is the same but its mechanical properties are different in every direction
Yielding - material begins to deform plastically will have an appreciable deformation when small amount of stress is experienced
Reciprocal of stiffness - refers to the flexibility of a structure
Reciprocal of deflection - refers to the rigidity of a structure
Torsional shear stress - will develop if the center of mass and center of rigidity of a structure does not coincide
Storey drift - refers to the lateral displacement of one level relative to the other level above or below k equals k one plus k two - If two springs with stiffness k, and k, are arranged in parallel, which of the following gives the combined stiffness k?
Which of the following best describes liquefaction? A. Decrease in pore water pressure B. sudden drop of shear strength - answer C. increase in effective stress.
D. increase in bearing capacity