Risk Analysis in Construction Sites Using Fuzzy Reasoning and Fuzzy Analytic Hierarchy Process

In this paper a risk assessment process is discussed by considering all kinds of body part wise injuries which are commonly occurred in construction sites. The risk corresponding to each body part wise injuries are measured using a combination of fuzzy reasoning and fuzzy-analytic hierarchy process. In the proposed methodology, risk scores corresponding to each body part wise injuries are measured first using fuzzy reasoning. Then associated weights of each body part wise injuries are calculated on the basis of current safety situation using fuzzy-analytic hierarchy process. The overall risk score of the concerned construction sites are evaluated using sum of product method. This risk assessment system is advantageous in dealing with both qualitative and quantitative risk data due to its capability of capturing vague and possibilistic data in an effective and efficient manner and which may help safety professionals and engineers to improve their safety management system of the construction sites. A case study on risk analysis of an Indian construction company is used to illustrate the application potentiality of the proposed approach.