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Technical Justification for Proposed Design Provisions for AAC Structures: Assemblage Test and Development of R and CD Factors

A general procedure for selecting values for the seismic force reduction factor (R) and the corresponding displacement amplification factor (C) for use in the seismic design of different structural systems is presented. The proposed procedure is based on comparing the predicted ductility and drift demands in autoclaved aerated concrete (AAC) structures as functions of the ductility reduction factor with the ductility and drift capacities of AAC shear walls as observed in quasi static testing under reverse cyclic loads. Seismic performance of AAC shear wall structures was evaluated using nonlinear analyses with hysteretic load displacement behavior based on test results .The paper presents the second part of a consistent technical basis for the design of AAC structures.