by J. De la LLera and A. Chopra
De la LLera, J., and A. Chopra (1991). Evaluation of Code Accidental Torsional Provisions Using Strong Motion Records From Regular Buildings. SMIP91
Seminar on Seismological and Engineering Implications of Recent Strong-Motion Data, p. 7-1 - 7-13.
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A procedure was developed for evaluating building code provisions for accidental torsion from
analysis of recorded motions of nominally symmetric-plan buildings during earthquakes. This
procedure was applied to the motions of a three story office building in Richmond (CSMIP
station no 58506), California recorded during the Loma Prieta earthquake. The results for this
particular earthquake show that the prescribed code accidental eccentricity value of 0.05b
predicts reasonably well the torsional effects experienced by the structure.