Structural Design Alternatives that may Reduce Seismic Retrofitting Costs , in A Quantitative and Qualitative Evaluation of Seismic Retrofits According to the Los Angeles Non-Ductile Reinforced Concrete Buildings Ordinance

This project contains the models, data, and qualitative documentation and approvals for the dissertation, "A Quantitative and Qualitative Evaluation of Seismic Retrofits According to the Los Angeles Non-Ductile Reinforced Concrete Buildings Ordinance". This research focused on the progression of the Los Angeles non-ductile concrete retrofitting ordinance, in terms of quantitative performance metrics such as repair cost and recovery time, but also qualitatively on the perceptions of those impacted by the ordinance. This project contains STKO, DeepSoil, and SP3 model descriptions (1. Seismic Performance of Non-Ductile Concrete Moment Frames Constructed to Older Building Standards), the IRB approved documentation (2. Perceived Enablers and Barriers of the Los Angeles Non-Ductile Concrete Ordinance), and the survey results and SP3 model descriptions (3. Alternatives for Reducing Direct and Indirect Costs to Seismically Retrofit Residential Non-Ductile Concrete Buildings).

1) Seismic Performance of Non-Ductile Concrete Moment Frames Constructed to Older Building Standards:
This project provides numerical STKO models that were used to obtain the demand parameters which were uploaded in SP3 to obtain the repair cost and recovery time assessments. In turn, the SP3 model inputs are described in relevant csv files. Additionally, we investigated the differences in site class and site response analyses. We did this with DeepSoil equivalent-linear models that propagated the ground motions from the bedrock to the surface. These ground motions were input at the fixed-base of the 3D STKO models, processed, and the demand parameters were input into the same SP3 models.

2) Perceived Enablers and Barriers of the Los Angeles Non-Ductile Concrete Ordinance:
Due to the IRB protocols, were are unable to share the qualitative data from our interviews. However, we have included the IRB files and information for archival contexts.

3) Alternatives for Reducing Direct and Indirect Costs to Seismically Retrofit Residential Non-Ductile Concrete Buildings:
In this portion of the study, we used mixed qualitative and quantitative methods with a survey and SP3 models. We present the survey results decoupled from personal information. The SP3 model inputs are described in relevant csv files.