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Civil Engineering: The Art of Managing Risk

  • 1.  Civil Engineering: The Art of Managing Risk

    Posted 12-17-2024 10:28 AM

    Risks are present in almost everything we touch as civil engineers. Civil Engineers implicitly manage risk through design and building codes and standards and explicitly through design choices and trade-offs. Are we doing enough to make the profession understand its role as a risk manager and what more needs to be done?



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    Mitch Winkler P.E.(inactive), M.ASCE
    Houston, TX
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  • 2.  RE: Civil Engineering: The Art of Managing Risk

    Posted 30 days ago

    Thanks Mitch!

    Q. "Are we doing enough to make the profession understand its role as a risk manager and what more needs to be done?"

    So, seems to me that at the "100,00 foot level" many would unequivocally answer "YES!"

    However, when we breakdown the accountability for risk,

    we go right into the C-suite of public and private orgs.

    Experience and research identify the main "Restraining  Forces" to

    such can best be captured by the expression

                       "Follow The Money."

    Cheers,

    Bill

    p.s. An example of the above remark includes "Pay to play."

    When confronted with the need for change or prove there is no need,

    Most immediately begin working on the proof.



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    William M. Hayden Jr., Ph.D., P.E., CMQ/OE, F.ASCE
    Buffalo, N.Y.

    "It is never too late to be what you might have been." -- George Eliot 1819 - 1880
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  • 3.  RE: Civil Engineering: The Art of Managing Risk

    Posted 25 days ago

    Follow the money - OK, for how long??  While business risk may be as short as the builders' quarterly profits, operational risk in this rapidly changing world requires us to stretch our evaluations to that remarkably uncertain future, which we too often neglect. We civils, whose realized designs last many decades, must learn to estimate/calculate future risks - and costs - better.  LCA should be a tool for all our work.  We must also learn how to convey our understanding of the risks and benefits so clients and stakeholders  understand the choices realistically.



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    Sarah Simon P.E., M.ASCE
    RETIRED
    Ipswich MA
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  • 4.  RE: Civil Engineering: The Art of Managing Risk

    Posted 25 days ago

    My encounters with project and regulatory engineers suggests widespread ignorance about risk management. They know the words, but not the principles and practices.

    For example, I attended a public agency workshop on risk in which the organizers defined risk incorrectly as the "probability of adverse event occurrence," instead of the correct engineering definition that includes two distinct components in risk – the probability of an event and the magnitude of consequences from that event. Even ASCE Policy Statement 437 on Risk Management is fuzzy on the definition. 

    The U.S. National Research Council and International Standards Organization provide engineering practice guidance on risk and risk management consistent with the correct definition.

    What more can be done? We can review ASCE's Continuing Education offerings and either create or promote those that teach true risk management. We can add a concise definition to Policy 437. We can encourage an article in ASCE magazine aimed at educating a general engineering audience. 

    Thanks for raising the issue, Mitch. It's important.

    Bill Mc



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    William McAnally Ph.D., P.E., BC.CE, BC.NE, F.ASCE
    ENGINEER
    Columbus MS
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  • 5.  RE: Civil Engineering: The Art of Managing Risk

    Posted 22 days ago

    It is good that we're thinking about it. Here is what I like to add.

    As I see it, uncertainty, probability or likelihood, and risk assessment and management – all belong to the Risk Envelope – Uncertainty and Risk.

    There are at least two NAP publications I came across: The 2013 U.S EPA Env Decisions in the Face of Uncertainty # 12568; and The 2024 Advancing Risk Communication . . . Atypical Climate Events # 27933, that provide some great directions to Risk Assessment and Management.

    The method of risk assessment, obtained as the product of the probability of occurrence of an event and the damage consequences of that event, is rather well-established. Estimating the probable but realistic damages and assigning financial values to them – have not been something easy to do (during the planning and design phases of a project) in the past. It is only the recent advances of GIS, mapping and remote sensing technologies – that have made the efforts easier, for example to estimate flood and storm surge damages.

    There is also an easy assessment approach, called the method of Encounter Probability. It relates the return period (in years) of an event to the design life of a project. For example, the likelihood or probability that a 100-year event will be encountered during the 30-year design life is 26%.

    Despite its simplicity, encounter probability reinforces the common notion of the design philosophy that – the longer the lifetime of a project – the stronger its components must be to withstand the long return-period events. It's a risk minimization step.

    Dilip

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    Dr. Dilip K Barua, Ph.D

    Website Links and Profile




  • 6.  RE: Civil Engineering: The Art of Managing Risk

    Posted 21 days ago

    Thanks for the references.

    We need to be careful these days about relying on 100 year flood categories.  New weather prediction methods, which don't only rely on the past 50 years of weather and precip, show that what used to be called 1,000 year floods may now occur every 70 years.  So no longer do "1,000" year floods occur once in many generations



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    Sarah Simon P.E., M.ASCE
    RETIRED
    Ipswich MA
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  • 7.  RE: Civil Engineering: The Art of Managing Risk

    Posted 20 days ago

    You are exactly right, Sarah. NOAA Atlas 15, with updated precipitation-frequency predictions for the contiguous USA, is scheduled for preliminary release in 2025 and final publication on 2026. Meanwhile, my clients are asking what numbers they should use right now, knowing that Atlas 14 is seriously out of date. They want to be responsible, but they don't want to overdesign by a huge margin.



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    William McAnally Ph.D., P.E., BC.CE, BC.NE, F.ASCE
    ENGINEER
    Columbus MS
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  • 8.  RE: Civil Engineering: The Art of Managing Risk

    Posted 19 days ago

    Good point, Sarah.

    Indeed, the non-stationarity of data that are affected, in particular by Warming Climate processes – tells that data from different periods cannot all be blended together. One implication of this – is that, data attributes (e.g. return period, probability, likelihood, etc) of a certain period in the past – are not likely to be the same as in present times. There was a Collaborate Discussion in June 2024 that touched upon this issue.

    And as you know, a certain return period in years – is another way describing the Annual Exceedence Probability (AEP). For example, a 100-year event has an AEP of 1%.

    * * *

    Good to know, Mitch.

    I see that ICE document made the reference to a London based CIRIA (Construction Industry Research and Information Association) document. CIRIA guidelines are very practical and useful.

    There is also a British Standard BS 8444 Part 3 (IEC 300-3-9) on Risk Assessment.

    I like NAP documents – they are mostly thorough and scientific. In most of them with multiple authors contributing – collectively they work as peer-reviewer to one another.

    Dilip

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    Dr. Dilip K Barua, Ph.D

    Website Links and Profile




  • 9.  RE: Civil Engineering: The Art of Managing Risk

    Posted 19 days ago

    I will also quickly add that there is a professional society, the Society for Risk Analysis

    This society, of which I am also a fellow, has extensive coverage of engineering and infrastructure risk issues, and has developed a glossary of terms which are quite useful and should be consulted.  ASCE needs to take more cognizance of what has been done in the risk field than they have (nor merely ISO, which has its own set of problems).



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    Charles Haas F.ASCE, NAE
    LD Betz Professor of Environ. Eng. Civil, Architectural and Environmental Eng.
    Philadelphia PA
    haas@...
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  • 10.  RE: Civil Engineering: The Art of Managing Risk

    Posted 18 days ago

    Thanks, Charles. That's very useful, especially the glossary.

    Bill Mc



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    William McAnally Ph.D., P.E., BC.CE, BC.NE, F.ASCE
    ENGINEER
    Columbus MS
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