Deflection criteria for controlling timber floor vibrations: A 200-year evolution
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Timber floor vibrations have long been a significant challenge in design and research, growing in importance with advancements in engineered wood products and the increasing use of mass timber panels. Since the publication of Thomas Tredgold's Elementary Principles of Carpentry in 1820, deflection limits have been essential in controlling excessive vibrations in timber floors, a practice that has evolved over 200 years. Despite updates to align with modern construction and timber engineering innovations, these criteria are often deemed insufficient for mass timber floor systems, underscoring the need for more rational analyses. This review examines the evolution of deflection criteria for timber floor vibrations and identify critical technical aspects for future design criteria, especially for mass timber floors. It highlights two distinct paradigms for floor vibrations: acceptability-based and perception-based. The deflection criteria, derived from acceptability-based studies, integrate three key factors: vibration source, transmission path, and occupant response (receiver), offering a practical and effective solution for controlling timber floor vibrations, despite being essentially empirical. In the future, a reliability-based approach is urgently needed to handle the significant uncertainties involved. Additionally, the human side of floor vibration serviceability equation has been least studied, emphasising the importance of recognising the variability and subjectivity of human responses. • This review traces the 200-year evolution of deflection criteria for controlling timber floor vibrations. • Advancements and shifts in deflection criteria are highlighted, providing insights into their effectiveness and limitations. • A detailed comparison of acceptability-based and perception-based paradigms was conducted. • Two problem-solving strategies for floor vibration were summarised.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 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 it