Retrofit Proposal for a 70-Year-Old Educational Building in a HighSeismicity Zone
Bibliographic record
Abstract
This article analyses the structural behaviour of an educational pavilion more than 70 years old in a highly seismic area, with damage to beams and columns attributed to the current use of the roof as a warehouse, in addition to having a high probability of collapse according to the FEMA P-154 seismic vulnerability study.Diamond extractions were carried out based on the ASCE 41-06 standard to obtain the compressive strength of the columns and beams.After the tests, linear and nonlinear analysis were performed based on the E.030 and ASCE 41-17 standards, respectively.The structural modelling confirmed non-compliance with the maximum distortion of 7/1000 allowed by the standard for the Y-axis gantry system.Therefore, RC jacketing was proposed as a reinforcement alternative according to the UNAM reinforcement guide and the IS 15988:2013 standard.The encasement of columns along the Y-axis reduced the drift by 58%, while the encasement of beams resulted in a 45% reduction.However, when implemented separately, neither of these encasements met the regulatory limit, prompting the adoption of a combined encasement solution, which achieved an 80% reduction.Whereas the pushover analysis indicated that in the event of frequent and occasional earthquakes, the reinforced structure would be fully operational, which shows the importance of developing a reinforcement plan at the superstructure level addressed in this research, which not only offers a reinforcement solution, but also serves as a reference for similar initiatives in other countries.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".