Former Dominion Archives Building Seismic Upgrade Case Study
Bibliographic record
Abstract
The former Dominion Archives building at 330 Sussex Drive in Ottawa, Canada is a three-storey historic stone masonry building that was built in two stages between 1904 and 1924. The perimeter masonry walls form the lateral load resisting system of the building; however, the walls of the 1904 section were in poor condition with soft and deteriorated mortar, the terra-cotta flat arch floors of the 1904 section did not form a proper diaphragm system, and the floor diaphragms were not adequately anchored to the perimeter walls. This case study will present the seismic upgrade and retrofit work that was undertaken to extend the life of the building, including an innovative solution to restore the structural integrity of deteriorated stone masonry walls, providing new lightweight reinforced concrete topping floor diaphragms in the 1904 section and connecting the concrete floor diaphragms to the historic masonry walls with stainless steel grouted anchors.
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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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.007 | 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".