The City of Calgary’s Nose Creek Sanitary Sewer Trunk Phase B Contract 4
Bibliographic record
Abstract
The City of Calgary's Nose Creek Sanitary Sewer Trunk Phase B project has been constructed over several years to accommodate future population growth and open more developable lands in northern Calgary.The project was divided into three phases, Phase A, B, and C, with each phase delivered by a separate consultant.Phase A was the downstream section of this project and was undertaken by Stantec Consulting.Phase B was the upstream section designed by CH2MHILL (now Jacobs) and further divided into different contracts (1 through 5).Phase C was a separate sewer called the Saddleridge Trunk sewer and this was designed by Associated Engineering.This paper covers Phase B, Contract 4, which had several unique challenges and included many innovative design and procurement solutions.One procurement strategy included a two-phase qualification package, with the initial phase to select a tunnelling contractor with the experience to deliver technical installations under rail and creeks, and the second phase, a RFP (request for proposal), to select a general contractor, with broader experience in open-cut and stormwater drainage, which were other aspects included within the project.This approach ensured that The City had the most qualified team available to complete the project.Technical challenges discussed in this paper include an oblique CPKC (Canadian Pacific Kansas City) rail and Nose Creek crossing that required independent review, and CFD (computational fluid dynamics) and hydrogen sulfide modelling to confirm conditions within the trunk sewer.
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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 | 0.001 |
| 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".