Occupancy category -- Importance factor and seismic design category -- Site classification procedure for seismic design -- Determining ground motion parameters -- Developing a response spectrum -- Ground motion scaling for response history analysis -- Structural system selection -- Combinations of lateral load resisting systems -- Horizontal structural irregularities -- Vertical structural irregularities -- Diaphragm flexibility -- Structural analysis requirements -- Use of the redundancy factor -- Accidental torsion and amplification of accidental torsion -- Load combinations -- Effective seismic weight (mass) -- Period of vibration -- Equivalent lateral force analysis -- Drift and p-delta effects -- Modal response spectrum analysis -- Modal response history analysis -- Diaphragm forces.