SEISMIC DESIGN OF STRUCTURES
Group A

Characteristics of earthquake: Earthquake terminology. Magnitude. Intensity. Measurement
of ground motion. Frequency-magnitude relationship. Liquefaction.
Strong ground motion: Acceleration time histories. Peak parameters (peak ground
acceleration/velocity/ displacement). Response spectrum. Site effects.
Earthquake analysis of structures: Idealisation on structures. Response spectrum analysis.
Equivalent force concepts. Torsionally coupled systems.












Group B

 

Concepts of earthquake-resistant design: Objectives. Ductility, ductility reduction factor, over
strength, response reduction factor. Design response spectrum. Lateral stiffness. Building
configuration. Base isolation. Concept of structural control.
Building codes: Performance of buildings in past earthquakes. Historical perspective on code
development-Indian code (IS 1893) provisions for buildings.
Detailing of reinforced concrete and masonry buildings: Provisions of IS 13920, IS 4326, IS
13827. Retrofitting and strengthening of buildings (IS 13935).
Other structures: Introduction to concept of seismic design for bridges and liquid retaining
tanks.


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