Equivalent RHS Approach for the Design of EHS in Axial Compression or Bending
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Bibliographic record
Abstract
The use of steel elliptical hollow sections (EHS) has grown steadily, but the implementation of EHS has been done without appropriate design guidelines or procedures. A pragmatic objective has been to develop a section conversion method to transform the EHS into an equivalent shape for which design equations and guidelines already exist. This paper further explores the equivalent RHS (rectangular hollow section) approach for member design. By using the equivalent RHS approach to convert the EHS into an equivalent RHS, the validity of existing RHS cross-section classification limits and member design equations are demonstrated for EHS columns subjected to axial compression that buckle about the major axis and the minor axis, and EHS beams subjected to bending about the major axis and the minor axis. The equivalent RHS approach is a single consistent and rational procedure, and it is shown to be a viable method for designing EHS compression members and flexural members.
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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 | 0.000 | 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