Engineers Are Telling the TBL-CBA Value Story: Financial + Social + Environmental Returns from Sustainable Infrastructure
Bibliographic record
Abstract
This paper will describe how civil engineers are playing new roles in delivering sustainable infrastructure projects. Beyond traditional tasks including steel and concrete takeoffs, engineers are now calculating triple bottom line or TBL returns (financial/economic + social + environmental returns on investment) for design alternatives under their control. They have learned to use cost-benefit, life cycle cost, sustainable return on investment based TBL analysis to determine project value which is essential to competing in best value based procurements. They are providing data sourced from practical and accessible economic assessment tools to inform community sustainability and resilience plans. They are revealing the value of their work through compelling business cases with outputs that address returns by project stakeholder group. Finally, they have discovered the benefits (customer service and competitive) of being able to test and tune their designs as decisions are made with the goal of delivering optimal returns.
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.
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 | 0.006 | 0.015 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.003 | 0.007 |
| Scholarly communication | 0.010 | 0.011 |
| Open science | 0.001 | 0.004 |
| Research integrity | 0.004 | 0.008 |
| Insufficient payload (model declined to judge) | 0.010 | 0.002 |
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".