Critical Evaluation of Design Methods for Overhanging Steel Girders
Bibliographic record
Abstract
This paper assesses existing design procedures used to determine the flexural resistance of overhanging steel girders as part of the Gerber roof framing system. Three design procedures are first introduced for overhanging girders based on the available design methods for their individual segments. A data set of nonlinear finite-element analysis results consisting of 7,539 practical overhanging steel girders is then developed. Three different loading and lateral restraint conditions at the cantilever tip are considered: (1) loaded at the shear-center level and unrestrained; (2) loaded and restrained at the top-flange level; and (3) loaded at the top-flange level and restrained at both the top and bottom flanges. All the point loads and lateral restraints at the back span are provided to the top flange at joist-to-girder connections. The results of the numerical simulation are used to critically evaluate the three design procedures and make recommendations regarding the conditions under which each design procedure may be overly conservative or unconservative.
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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 | 0.009 | 0.021 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 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".