Prospects for a test procedure for rating floor toppings on joist floors
Bibliographic record
Abstract
Recently ASTM issued a new test method, E2179, for rating the reduction in impact noise when a floor topping is placed on a concrete slab. E2179 is essentially the same as ISO140-8. Measurements have shown that the reduction in impact noise obtained when a floor topping is placed on a concrete slab is not the same as when the topping is placed on a wooden subfloor supported on joists. To complicate matters, the improvement obtained for a given topping changes when the construction of the joist floor on which it is placed changes. Thus a standard test method with a rigorous definition of a reference joist floor might be created but the measured improvements would not necessarily be applicable to joist floors of different construction. The ISO and ASTM single number ratings for some joist floor systems with toppings do not always give good agreement because of the 8 dB rule that exists in ASTM E989 but is absent in ISO 717-2. This paper will review some of the activities in ASTM and ISO and present some measurement resuts obtained in several laboratories.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| 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) | 0.000 | 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 teacher head, 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".