NEHRP Clearinghouse

Title
Evaluation of Code Accidental-Torsion Provisions Using Earthquake Records from Three Nominally Symmetric-Plan Buildings.
File
PB94117611.pdf
Author(s)
De la Llera, J. C.; Chopra, A. K.
Source
National Science Foundation, Washington, DC.; California Strong Motion Instrumentation Program, Sacramento., July 1992, 170 p.
Identifying Number(s)
UCB/EERC-92/09
Abstract
A procedure is presented for evaluating building code provisions for accidental torsion from analysis of earthquake-induced motions of nominally-symmetric-plan buildings. The procedure is used to analyze the motions of three buildings recorded during recent California earthquakes. The results demonstrate that the accidental torsional moments specified by the Uniform Building Code are more than sufficient in representing the torsion in the recorded motions of these three buildings, a conclusion that should be applicable to almost all buildings with nominally-symmetric plan.
Keywords
; Seismic design; California; Torsion; Lateral pressure; Design standards; Earthquake engineering; Office buildings; Building codes; Structural analysis