A Scrutiny of the Equivalent Static Lateral Load Method of Design for Multistory Masonry Structures

Sameer Helou's picture
Journal Title, Volume, Page: 
American Institute of Physics
Year of Publication: 
A.R. Touqan
Nablus, Palestine
Current Affiliation: 
An-Najah National University
S.H. Helou
Jerusalem, Palestine
Current Affiliation: 
An-Najah National University
Preferred Abstract (Original): 
Abstract. Building structures with a soft storey are gaining widespread popularity in urban areas due to the scarcity of land and due to the pressing need for wide open spaces at the entrance level. In earthquake prone zones dynamic analysis based on the Equivalent Static Lateral Load method is attractive to the novice and the design codes leave the choice of the analysis procedure to the discretion of the designer. The following is a comparison of the said method with the more elaborate Response Spectrum Method of analysis as they apply to a repertoire of different structural models. The results clearly show that the former provides similar results of response in structures with gradual change in storey stiffness; while it is over conservative for a bare frame structure, it is however less conservative for structures with a soft storey. Thus the superiority of the Response Spectrum Method becomes evident.
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