Walnut Canyon Dam Seismic Performance Evaluation

Barneich, John A.; Choi, Yoojoong; Shen, David C.; Moriwaki, Yoshi; Tan, Phalkun

doi:10.1061/40975(318)184

Cited by 1 publication

(2 citation statements)

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“…An early example for a terminological framework for uncertainty communication is given in Table 1, which was developed by Barneich et al (1996). It was made for the nuclear power industry as a "Subjective Probability Estimate Guide" and reflects the probability of dangerous events as perceived for the nuclear industry.…”

Section: Introductionmentioning

confidence: 99%

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A consistent terminology to communicate ground-related uncertainty

Erharter,

Lacasse,

Tschuchnigg

2024

Preprint

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Engineering geology is highly affected by uncertainty related to the geology, geotechnical parameters, models used and methods. While the technical aspects of ground-related uncertainty are increasingly investigated, the terminology to communicate uncertainty (i.e. phrases such as “it is very likely that”) has not yet been unified and experts use it however they see fit. The problem arises that due to varying levels of experience, personal biases and cultural backgrounds, people may understand uncertainty statements very differently, which is misleading and can even result in legal disputes. This contribution investigates the usage of uncertainty terminology in ground-related disciplines and finds that there is a pronounced prevalence of uncertainty terminology in disciplines dealing with geo-materials and that there is a special need to express uncertainty related to quantities (e.g. “most of the tunnel consists of…”). In response, we propose a consistent framework to communicate ground-related uncertainty consisting of three steps: 1. if facts are to be described, describe them as such; 2. assess and state the degree of confidence in a statement based on the quantity and quality of the available evidence vs. the agreement of the evidence; 3. if high or very high confidence is achieved, describe the likelihood or quantity in a consistent manner. Using consistent ground-related uncertainty communication is essential to avoid misunderstandings which can lead to dire consequences. The proposed approach is in line with new standards, such as Eurocode 7, that demand an explicit treatment of uncertainty.

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Section: Introductionmentioning

confidence: 99%

“…Table 1: Guidelines for subjective probability estimates for the nuclear energy industry (Barneich et al, 1996).…”

Section: Introductionmentioning

confidence: 99%