Analysis of Field-Measured Reversible Deformations in Masonry Cavity Walls
Bibliographic record
Abstract
A remote monitoring system was installed in a 17-year-old clock tower in St. Albert, Alberta, Canada to record and analyze the vertical deformations of its masonry cavity walls. An hourly record of temperature, humidity, and vertical movements in the walls over a period of 638 days has been collected and analyzed. The observations suggest that reversible moisture effects are significant and that radiation-induced temperature spikes could be much higher than what is accounted for by current guidelines for the design of movement joints. It is demonstrated that peak reversible moisture and thermal strains estimated using the Commentaries to the 2010 National Building Code of Canada (NBCC) may be unconservative and that peak design temperature is severely underestimated. Revisions to bring the design values of the 2010 NBCC Commentaries into closer agreement with those of CSA S304.1-04 and ASTM C1472-10 are recommended.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| 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) | 0.001 | 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 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".