Seismic Analysis & Earthquake Engineering - Fundamentals

Trace seismic codes progression from Building Seismic Safety Committee to FEMA and ASCE, showing ASCII and ABC provide loading criteria while design criteria reside in codes, on a five-year cycle.

Apply the response spectrum method to seismic analysis and derive region-based spectral components. Identify region one’s short-period constant spectral acceleration, region two’s constant spectral velocity, and region three’s constant displacement.

Combine displacement, velocity, and acceleration into a single response spectrum curve to deduce all three spectra from any one, and relate short-period acceleration sensitivity, long-period displacement sensitivity, and mid-range velocity.

Examine the time history scaling method using real time histories and real earthquakes to align responses to the response spectrum, then note its disadvantages: time consuming and varied results.