Thermosyphon foundation design and performance at Iqaluit ATB and CSB
Bibliographic record
Abstract
The Air Terminal Building and Combined Services Building at Iqaluit Airport are supported on thermosyphon stabilized foundations.The design incorporated the use of a "warm fill" layer above the thermosyphon system to facilitate the installation of below-grade utilities and services.This foundation design concept was an innovative variation and has since become a typical configuration for large-scale flat loop thermosyphon systems.This design concept is described.The design review analyses considered three short-term severe climatic conditions as well as projected climate warming over an assumed 50-year service life.The climate assumptions are reviewed, and the short-term conditions are found to remain conservative, but the climate change assumption may not be.The foundations were constructed in 2014 and 2015.Instrumentation was installed at the time of construction to permit the thermal performance of the foundation to be monitored.Performance monitoring data are reviewed.The available data indicate that thermal performance to-date has exceeded design expectations.The implications of the performance to-date with respect to the climatic assumptions are reviewed.Satisfactory long-term performance is still anticipated.1
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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 | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".