Investments in made ground are a big problem. The present investigation concerns ground derived from limestone treatment waste from SOLVAY soda plants. This waste is deposited in the southern area of Krakow in a reservoir called ‘White Seas’ in an area of approximately 15 ha. Currently, part of the route and tram investment, ‘The Łagiewniki Route’ Currently through the ‘White Seas’ area. The article presents an analysis of a section of this route by a high and steep slope made from made ground. The first stage of the in-situ measurements was to scan the shape of the high slope with the RIEGL VZ-400 terrestrial laser scanner. It was necessary to obtain the shape of the slope for numerical modelling using the FEM method. The point cloud perfectly reflected the shape of the slope with an accuracy of 5 mm. Soil samples (limestone waste) were also collected in the area of the slope for laboratory tests. In order to determine the effective strength parameters of the made ground of the embankment, a series of tests was carried out using triaxial compression apparatus. All triaxial tests were performed in accordance with British Standard 1337 Part 8. Modelling was performed using an FEM finite element method in MIDAS. The analyses also included the variant of irrigation of made ground. The conducted research shows that the high and steep slope made from calcareous waste indicates stability. The irrigated land did not make the high escarpment unstable.

Knowledge of the fluid dynamic characteristics in a stirred vessel is essential for reliable design and scale-up of a mixing system. In this paper, 3D hydrodynamics in a vessel agitated by a Rushton turbine were numerically studied (with the help of a CFD computer program (CFX 13.0)). The study was carried out covering a wide Reynolds number range: 104 - 105. Computations, based on control volume method, were made using the k-ε model. Our main purpose was to investigate the effect of vessel configuration and agitation rates on the flow structure and power consumption. Three types of vessels were used: unbaffled, baffled and a vessel with slots placed at the external perimeter of its vertical wall. The effect of slot length has been investigated. The comparison of our predicted results with available experimental data shows a satisfactory agreement.