A Two-Stage Safety Assessment Methodology for Construction Activities

by M. H. M. Hassan, Univ of Maryland, College Park, United States,
B. M. Ayyub, Univ of Maryland, College Park, United States,

Document Type: Proceeding Paper

Part of: Probabilistic Mechanics and Structural and Geotechnical Reliability


The control of construction activities requires the evaluation of the condition of the control attributes of interest. In order to develop the required methodology, a model of the construction activity was built. In this model, the activity was modelled as an overall system which comprises several subsystems that represent the underlying processes. The two-stage methodology results in a safety assessment at the process as well as at the activity level. The two-stage approach is necessary for accurate feedback decisions within the control system. In this study, the likelihood of failure during construction was chosen as the safety measure, and the probability of failure was used as the likelihood measure. The assessments resulting from the developed methodology were then integrated in a fuzzy-based control system that monitors the safety during construction. The control system then suggests corrective actions based on the deviation of the current safety levels and the targeted standards.

Subject Headings: Construction methods | Occupational safety | Control systems | Fuzzy sets | Safety | Failure analysis | Probability | Building codes

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