What risk means
In projects, a risk is an uncertain event that, if it happens, affects an objective such as cost, time, quality or safety. Some risks are threats; some are opportunities.
Risk management follows a cycle. Identify risks, from workshops, checklists and past projects. Analyse each by its likelihood and its impact, first qualitatively with a probability-impact matrix, and for the biggest ones quantitatively. Plan a response: avoid the risk by changing the plan, reduce it, transfer it through insurance or contract, or accept it with a contingency. Then monitor, because risks change as the work proceeds.
All of this is recorded in a risk register with an owner for each risk. Ground conditions, weather, design changes, utility diversions, approvals and supply delays are typical construction risks.
Safety risk on site uses the same logic but different priorities: eliminate the hazard first, then substitute, engineer controls, administrative controls, and only last rely on personal protective equipment. ISO 31000 and ISO 45001 give general frameworks.
A risk is different from an issue: an issue has already happened and needs action now. Turning risks into issues early, by monitoring triggers, is a key project control habit.
Risk score = likelihood rating × impact rating (qualitative)Expected monetary value EMV = probability × cost impact
Problem. A risk has a 20 % chance of causing a Rs 50 lakh overrun. Find its EMV.
- EMV = 0.20 × 50 = Rs 10 lakh.
Answer. Rs 10 lakh
Quick quiz
1Four response strategies to a threat?
Avoid, reduce, transfer, accept.
2Top of the hierarchy of controls?
Elimination.
3What is a risk register?
A record of risks, ratings, owners and responses.
- ISO 31000 (International): Risk management guidelines.
- ISO 45001 (International): Occupational health and safety management systems.
- ISO 9001 (International): Quality management systems: requirements.
Cited by number and clause only. We do not reproduce clause text, tables or figures (BIS Act 2016, s.10(5) and s.11). Check the current edition and amendments before use.
References and further reading
Standard texts, listed in no order of merit. We do not copy text, figures, tables or solved problems from any book; our explanations and examples are original.
- F. Harris, R. McCaffer, Modern Construction Management, Wiley-Blackwell, latest edition.
- K. K. Chitkara, Construction Project Management, McGraw Hill Education (India), latest edition.
Free and official sources
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