A risk-based approach to construction control applied by a developer

Introduction. The activity of a technical customer, performed in the course of implementing construction projects, encompasses numerous functions, including construction control. Given that multitasking is typical for intensive construction, construction control, performed by the technical customer, cannot reach 100 % of the activities conducted by the general contractor and subcontractors. Currently no regulatory documentation determines the level of danger of construction defects and violations of occupational health and safety requirements. In this regard, it is important to develop and implement methods that allow prioritizing the objects of control and management, and determine the sequence of violations to be eliminated. It is important to introduce a risk-based approach into construction control performed by the technical customer to solve these problems. The purpose of the study is to develop a methodology of risk-based construction control by the developer. The objectives of the research include identification, analysis and calculation of risks in the course of construction control. Materials and methods. In this article, methods of systemic and morphological analysis are used to identify risks; standards of the system of indicators applied to the product quality in construction are used to classify defects. Risks are calculated using risk management standards and provisions of the theory of probability, namely, Bayes’ theorem. Results. This article has an overview of application of risk management in construction; it substantiates the relevance of its implementation by the technical customer within the framework of the construction control system. The article identifies the main risks of construction control and suggests a method for calculating them using Bayes’ theorem. Methods of calculating the a posteriori probability of injury in the event of a violation of occupational health and safety rules are determined. In the article, the authors present a classification of defects of monolithic railway structures. The article provides sample classifications of defects of monolithic reinforced concrete structures. The method of calculating the risk of damage caused by a defect in a building structure is determined, which allows assessing the degree of the defect hazard. The method of calculating the a posteriori probability of adverse events in the course of detecting defects in building structures is determined. Conclusions. In the article, the authors present a methodology for identifying risks in the course of construction control. It encompasses the calculation of a posteriori probabilities of adverse events using three a priori indicators: the frequency of hazards, the frequency of damage, the frequency of hazards that cause damage. The prospects of further research are addressed in the conclusion section of the article.