Bibliographic record
Abstract
The 774-ft (236-m) long twin structures of the Bow River Bridge, which is currently under construction in Calgary, Canada is using high performance concrete for its precast, prestressed concrete girders. Each structure consists of two 174-ft (53-m) and two 213-ft (65-m) long spans. The precast concrete alternative provided a cost savings of about 10 percent (CAN $9.6 million versus CAN$10.5 million) compared to the steel plate girder option. This bridge marks the first time a one-piece 211-ft (64.25-m) long girder weighing 268,000 lb (122 Mg) has spanned the entire distance between permanent pier supports without recourse to segmental I-girders, intermediate splice joints, and temporary falsework towers. Another source of economy is the relatively wide girder spacing of 11.65 ft (3.55 m). This spacing resulted in fewer girder lines despite the relatively long spans and the uncommonly heavy design live load mandated in Alberta. The heavy equipment hauling demands of the oil refinery industry result in a maximum live load moment that is 1.5 to 2 times that produced by AASHTO HS20 loading.
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 | 0.002 | 0.002 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.041 | 0.007 |
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".