Inglewood Sanitary Trunk—A Case Study in Using Today’s State of the Art Technologies to Provide Sewage Conveyance Capacity to Meet Tomorrow’s Needs
Bibliographic record
Abstract
The Inglewood Sanitary Trunk (IST) is a large diameter sanitary trunk located in Calgary, Alberta. Construction of Phase 1 was completed in November 2020 and consisted of approximately 3,500 m (2.2 mi) of 2,286/2,500 mm (90/98 in.) reinforced concrete pipe installed by microtunneling and approximately 270 m (0.17 mi) of 3,000 mm (120 in.) × 1,500 mm (60 in.) reinforced concrete box section installed by traditional cut and cover construction. Live connections were completed to 1,800 mm (71 in.) diameter pipe, a 2,100 mm (83 in.) × 1,500 mm (60 in.) concrete box section and the Bonnybrook Wastewater Treatment Plant (BBWWTP) headworks. Design of Phase 2 is currently nearing completion and consists of a twin 400 m–1,500 mm (60 in.) inverted siphon crossing of the Bow River. Construction is projected to be completed by 2024. When fully constructed, this upgrade will provide much needed additional sanitary capacity for a total equivalent population of 1.1 million residents and support growth to the 2,076 design horizon. This paper discusses the hydraulic concepts of the IST solution, design and selection of construction concepts, and a summary of the construction itself, including risk mitigation and project challenges overcome in the successful delivery of this project.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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 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".