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The substructure seismic-design process in the bridge modeler is documented in the Bridge Seismic Design manual. This manual, based on AASHTO specifications for LRFD bridge seismic design, describes the automated seismic-design procedure for bridges. Displacement-demand formulation is based on Article 4.8 of the AASHTO Guide Specifications for LRFD bridge seismic design.

 On this page:

Table of Contents

Applicability

Design procedures implemented in the bridge modeler are applicable to reinforced-concrete columns. 



Seismic design category

The seismic design category, determined through AASHTO Article 3.5, is based on the design spectral acceleration of a one-second period.

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