Self-tapping screws as reinforcement for rounded dovetail connections
Why this work is in the frame
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Bibliographic record
Abstract
The use of self-tapping screws as reinforcement to improve the structural performance of rounded dovetail connections (RDC) under vertical shear loading was studied. RDC are a versatile concept for connecting two wooden members. RDC without reinforcement were compared with RDC with three different types of reinforcements: joist reinforcement with screws at an angle of 90° between the screw axis and the wood grain of the joist, reinforcement of joist and main beam with screws at an angle of 55° between the screw axis and the wood grain of the joist, and reinforcement of joist and main beam with angled screws crossing each other. The failure modes in shear tests were studied; and the capacity, the load at 3 mm deformation, and the relative vertical deformation at capacity were evaluated using analysis of variance. Self-tapping screws significantly improve the structural performance of RDC. All reinforcement types significantly increase capacity, and stiffness is significantly increased when main beam and the joist are reinforced with self-tapping screws. Copyright © 2008 John Wiley & Sons, Ltd.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 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 it