Threading the Needle: Building Dual 42″ Mains in Becks Run Road to Keep Pittsburgh’s Water On
Bibliographic record
Abstract
The Becks Run Raw Water Pumping Station and Intake facility are critical to Pennsylvania American Water Company’s (PAWC) water supply system, delivering 60 million gallons of raw water per day to the Hays Mine Water Treatment Plant. Aging infrastructure, including four transmission mains installed between 1900 and 1953, suffered from leaks, breaks, and reduced capacity due to tuberculation. To ensure a reliable water supply, PAWC initiated the Becks Run Raw Water Main project, replacing outdated mains with 16,000 linear feet of 42-in. ductile iron pipe. A temporary 6,500-ft-long 36-in. HDPE raw water pipeline was constructed to maintain water flow during the upgrade. The project involved overcoming challenges such as unmarked utilities, maintaining traffic on Becks Run Road, addressing thermal expansion in the temporary pipeline, and boring through hillsides for creek crossings. This upgrade is vital for sustaining water supply reliability and operational efficiency in the Becks Run system.
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 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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.006 | 0.002 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.003 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.026 | 0.006 |
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".