Common Geotechnical Design Challenges for Solar Power Plant Development in the USA and Canada
Bibliographic record
Abstract
By 2023, global utility-scale solar photovoltaic (PV) installations are expected to reach almost 1,000 GW. Ground-mounted solar PV racking systems typically consist of a steel structure supported by drilled or driven pile foundations. Due to the relatively light-weight nature of solar racking installations, environmental conditions such as hazards due to frost action are of critical importance for PV ground-mounted systems. Pile uplift due to adfreeze stresses from frost action typically controls the foundation design for projects in the northern portions of the United States and in Canada. This paper presents a discussion of important considerations for geotechnical design for utility scale solar PV racking systems, with a focus on frost action risk, typical evaluation methods, design recommendations, and mitigation options for impacted sites. The important role of a typical design process including performing appropriate geotechnical investigations and incorporating results of pile load testing for optimization of design are also discussed.
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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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.003 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 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".