Author(s)

A.C. Heidebrecht & A. Rutenberg

Abstract

Seismic site-dependent response spectra for building codes: a proposal A.C. Heidebrecht", A. Rutenberg* "Department of Civil Engineering and Engineering Mechanics, McMaster University, Hamilton, Ontario L8S 4L7, Canada ^Faculty of Civil Engineering, Technion - Israel Institute of Technology, Haifa 32000, Israel ABSTRACT Results of an extensive parametric study on site response effects due to strong ground shaking [5] are used to develop new design spectra for different soil conditions for inclusion in future seismic codes. The proposed spectra are a variant of a recently proposed foundation factor F* [6]. This factor depends on the ratio of the natural vibration period of the structure to the predominant period at the site. However, site periods are not usually available for low and mid rise buildings. Therefore, the main feature of the new design spectra is that they are not explicit functions of the site period. The proposed spectra relate to four new classes of soil dep

Keywords