This article is based on the materials presented in the Scientific and technical report on the results of contractual work performed by employees of Scientific Association "Stroidiagnostika" in 2019. The article presents the results of in-kind surveys of reinforced concrete trippler bearer of Reftinskaya hydroelectric station. Reasons for formation and nature of cracks of different orientation caused by pressure of fastening anchors on concrete during unloading of wagon. A new method of calculating the strength of concrete for puncturing under load is proposed.