Cast Iron Trunk Watermains in the City of Toronto
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Transmission watermains in the city of Toronto use predominantly the following two material types: cast iron with cement mortar lining (“CML”) and CML steel with concrete encasement. The focus of this paper is to discuss the history, current condition, the city’s cast iron watermain rehabilitation plan, and a few recent highlight projects related to cast iron trunk watermain replacement. Record drawings show that cast iron pipes in Toronto’s transmission water system were used from 1900s to early 1950s. After 1950s, cement mortar lined steel pipes with concrete encasement were the predominant standard for new trunkmains. Currently, there are about 100 km of cast iron trunk watermain ranging from 600mm to 900mm in diameter still in service today. Most of them in the older parts of Toronto such as downtown core and west end of downtown Toronto. Currently, the city has planned $153 million (Canadian Dollars—“CAD”) over the next 10 years to replace and rehabilitate cast iron trunkmains to restore the useful life of our trunkmain linear infrastructure.
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.
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 it