Bibliographic record
Abstract
In 1915, the city of Baltimore entrusted one of the founders of Whitman Requardt and Associates, Ezra Whitman, with the task of designing the new Montebello Water Filtration Plant. Montebello would provide clean drinking water for all of Baltimore. In turn, Mr. Whitman relied on the Lockjoint Pipe Company to design and manufacture 108″ (2,700 mm) diameter concrete pipe to act as a finished water conduit for the new Montebello Water Filtration Plant. The pipe, designed to maintain 80 ft (24 m) of head and weighing 11 t (10 MT) each, was manufactured nearby. One hundred years later, the city of Baltimore returned to Whitman Requardt to update the Montebello plant. As part of the modernization, Whitman Requardt planned on cutting into the existing 9′ diameter reinforced concrete pressure pipe, removing a venturi meter and replacing it with an ultrasonic flow meter in a vault. Allan Myers successfully bid on the project and chose to provide new 108″ (2,700 mm) prestressed embedded concrete cylinder pipe to replace a portion of the circa 1915 concrete line. The 1915 pipe was constructed with a joint similar to a single offset reinforced concrete pipe but included a copper expansion band overlapped with reinforcement, and the whole assembly was finished with poured and troweled cement mortar. Replicating this joint to make a connection would have proved very difficult. The pipe manufacturer, Allan Myers, and Whitman Requardt discussed several options to create a watertight seal. This paper will give a brief history of the Montebello facility, give an overview of the improvements being made, and will discuss various options considered to make watertight connections to the existing finished water pipe and the means and methods used by Allan Myers to successfully make this connection on both ends of the cut-in.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.003 | 0.002 |
| Open science | 0.002 | 0.002 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.080 | 0.009 |
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".