Calibration of AASHTO LRFD Concrete Bridge Design Specifications for Serviceability (2014) / Chapter Skim
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ABSTRACT The notion of limit state is fundamental in the AASHTO LRFD Bridge Design Specifications (AASHTO LRFD)
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EXECUTIVE SUMMARY The current service limit states (SLS) of the AASHTO LRFD are intended to ensure a serviceable bridge for the design life; assumed to be 75 years in AASHTO LRFD.
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The results of the work indicated that the main problem in calibrating the service limit states is the lack of clear consequences to exceeding the limit state and the ability to define more than one limit state function to address the same phenomenon. In the absence of reasons to increase or decrease the reliability inherent in the designs performed using the current specifications, the goal of the calibration was to achieve uniform reliability with an average reliability similar to that inherent in current designs.
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