Bishopville Road Arch, Nova Scotia - Reduction of Excavation for Soil Foundation Improvement
Bibliographic record
Abstract
The Nova Scotia Department of Transportation and Public Works (NS TPW) called a tender in July 2007 to replace a corrugated steel tunnel (CST) crossing Highway 101 near Windsor, Nova Scotia. The new concrete arch structure was stipulated as Design-Build, allowing the contractor to use innovative construction techniques, acceptable to NS TPW, to provide a cost effective structure replacement. This paper will describe the geotechnical analysis, approval and processes used to reduce the volume of foundation excavation for a new Bishopville Road arch tunnel. It will demonstrate the foundation improvement design did not adversely affect the structural integrity of the new structure. Survey data taken before, during and after final construction of the arch will illustrate the foundation settlement was well within design limits. The proven results of this case study show that geotechnical analysis of the in-situ material along with controlled construction practices can save backfill replacement costs, energy, and emissions to the environment.
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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".