Bibliographic record
Abstract
The Chaudiere Crossing was the first bridge built over the Ottawa River and today provides a vital interprovincial transportation link between Ottawa, Ontario and Gatineau, Quebec. The Crossing is a primary commuter route between the cities of Ottawa and Gatineau, carrying approximately 28,000 vehicles daily. As such, this crossing cannot be closed to traffic nor is it feasible to replace structures. Therefore, structure rehabilitation is the only practical solution. Public Works and Government Services Canada (PWGSC) was allocated $400 million over two years to repair Crown-owned public infrastructure such as buildings and bridges. While this presented a great opportunity for PWGSC to accelerate the rehabilitation of the Crossing, it also posed a challenge to complete a major project in a tight timeframe. After much consideration, the solution selected was to re-line the existing arches with a series of precast arch elements and to grout the annulus between the host structures and the precast elements. This case study examines the various aspects of this project from the initial stages of design, through the various solution options, to the development of the final solution. More importantly, it explores the challenging manufacturing and construction operations that involved working with a series of large and heavy components, in a restricted space, over the Ottawa River. With a restricted time schedule and the above noted construction constraints, the paper details how those major obstacles were overcome to complete this project on time and on budget. For the covering abstract of this conference see ITRD number 201211RT334E.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 |
| 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".