Nonlinear Performance Based Seismic Assessment for Low-Rise Buildings
Bibliographic record
Abstract
In May 2004 the Ministry of Education of British Columbia (Ministry) announced a $1.5 billion seismic mitigation program for public K-12 school buildings. The goal of this program is to achieve the seismic mitigation of the most hazardous school buildings within a reasonable length of time. The development of innovative, cost effective assessment and mitigation design is being prepared under contract with the Ministry through a cooperative agreement between the Association of Professional Engineers and Geoscientists of British Columbia (APEGBC) and the Department of Civil Engineering of the University of British Columbia (UBC). The unique approach to develop a new cost effective seismic mitigation program within a reasonable period of time is a real challenge. The basic concepts of the approach and preliminary data were generated and released to the design community in November 2006. Internally this document is referred to as the Bridging Guidelines. However, the official title of the copyrighted document is Performance-Based Seismic Assessments and Retrofit Design Concepts — Second Edition. In March 2007 the Ministry announced the availability of $254 million in funding for capital construction. The Ministry required that the funds for this program be utilized for the assessment and structural seismic retrofit designs of the school buildings. Non-structural seismic mitigation was in a separate program. APEGBC and UBC are continuing the program development. The concepts and ideas given herein are a combination of those released in November 2006 and more recent developments. This paper is intended to be consistent with the new, significantly improved version of the program. However, as new concepts continue to be developed this paper cannot assure the reader that what is presented will be the final approved program.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".