Cylindrical steel tanks are very popular shell structures used to store the products of chemical and petroleum industries. Any failure might have disastrous consequences, therefore their safety and reliability is essential. Earthquakes are the most dangerous and also the most unpredictable dynamic loads acting on such structures. On the other hand, mining tremors are usually considered to be less severe due to lower acceleration levels observed. The aim of the present paper is to show the results of the shaking table experimental study focused on the behaviour of a steel cylindrical tank under moderate earthquakes as well as mining tremors, as obtained for different levels of liquid filling. Results of the study confirm that the level of liquid filling is really essential for the structural analysis. Comparison of responses under moderate earthquakes and mining tremors indicate that the second excitation may sometimes be more dangerous.
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