Estimates of flanking paths involving the wall-floor junction in wood framed construction
Bibliographic record
Abstract
This paper reports findings from a recently completed study of flanking sound transmission involving the wall/floor junction in wood framed buildings. The paper examines how common construction details affect flanking paths between rooms separated vertically by a floor/ceiling assembly. Variables considered include: the mounting conditions and orientation of joists, the framing of the wall assembly, and the mounting and number of layers of gypsum board. Estimates of the apparent sound insulation were obtained by summing the energy transmitted via the direct path through the floor-ceiling assembly and all the flanking paths involving four wall-floor junctions. Results indicate that if there is no floor topping (i.e., the subfloor is bare) then it is quite likely that the apparent sound insulation for both airborne and impact sources will be limited by flanking. Three different toppings are considered as treatment options for the floor, and additional layers of gypsum board and resilient mounting are considered as options for the walls. The effectiveness of each option is considered and discussed.
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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 | 0.002 |
| 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 | 0.000 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".