Abstract
The article presents the results of investigation of soils in the base and reasons for the collapse of a reinforced concrete chimney. Based on the materials of the conducted studies, it was concluded that the main reason for the collapse of the reinforced concrete shaft of the chimney of coke oven batteries no. 5 and no. 6 of arcelormittal temirtau jsc (formerly karaganda metallurgical plant) is a decrease in the strength characteristics of concrete due to many years of constant moisture, freezing and thawing in the autumn winter-spring periods of time, and indirectly due to the lack of proper control over the technical condition of building structures of all areas of reinforcement of the reinforced concrete chimney shaft and assessment of their strength characteristics. The design of the reinforcement instead of its original purpose contributed to the development of negative consequences and the safe operation of the facility.