A Comparative Analysis for Base Shear Calculations between Six Countries with Moderate Seismic Activity
Bibliographic record
Abstract
This paper investigates equivalent lateral force design provisions for determining the seismic base shear found in several international design standards. Six standards were chosen from around the globe to investigate their approach to seismic design and the effect of regional differences. Design standards were selected from Canada, USA, the EuroCode, Uganda, India, and China. The seismic base shear for a simple multistory regular structure subjected to a particular ground motion was determined per the provisions in these six design standards. In order to better understand the resulting differences between each standard, the seismic base shear calculations were broken into distinct common components (ground motion, soil interaction, seismic resisting system, and structure importance) and their individual value and resulting impact on the seismic base shear were compared. This paper is of interest to structural engineering faculty involved in seismic engineering research or in teaching seismic design. This paper is also of interest to design professionals involved in international projects. This paper is also of interest to code developers by providing a broader perspective on how other code developers from around the globe approach seismic design. Readers of this paper will take away a review of the equivalent lateral force procedure found in ASCE 7-10 for determining the seismic base shear and an understanding of how other international design provisions approach seismic design.
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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 | 0.004 | 0.016 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.003 | 0.004 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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".