Study of minimum base shear on design seismic code

The seismic response coefficient, Cs, shall be determined in accordance with:

C S R I

= ⎛ ⎝⎜

⎞ ⎠⎟

(2)

where SDS = the design spectral response acceleration parameter in the short period range as determined

1 INTRODUCTION

Many country adopted seismic design provisions of ASCE 7-10. As compared to the previous version, several major modifications have been included in the ASCE 7-10. The code now requires a minimum base shear in analysis.