Purpose. To carry out predictive assessment of the hydrodynamic regime at the prospective construction site on the Dnipro floodland in order to choose an expedient drainage system and substantiate the drainage parameters. Methods.In studying the hydrodynamic regime, we used the method of variant modeling of three-dimensional filtration processes during the operation of various types of drainage and different drainage element layouts using a numerical mathematical model implemented on the basis of a finite differences method. Findings.The main mode-forming factors of the investigated territory have been determined using the results of analysis and generalization of the data related to geological structure and hydrogeological conditions. The general hydrodynamic scheme of the simulated area has been developed, the structure of geofiltration model has been justified, its initial and boundary conditions have been determined. Predictive estimation of groundwater level regime has been executed, comparative analysis of vertical and bed drainage efficiency with various schemes of drainage element layouts has been carried out by simulation. The efficiency of the drainage structures operation in the protected area has been estimated for high-level flood conditions with 1% probability in the Dnipro.Originality. Patterns in the hydrodynamic regime formation of the Dnipro floodland have been determined under the influence of the main mode-forming factors in conditions of drainage operation.Practical implications of the work consist in substantiation of choosing the hydrodynamically expedient drainage system, the layout of dewatering constructions and drainage parameters for the site of the projected construction. The results of this research can form the basis for the development of the protective engineering measures in construction design at sites within potentially flooded river valleys.

The article discusses key issues related to the historical prerequisites for the formation of a high-density low-rise residential development. This is a complex and long process, the stages of which took place at different times and in different countries of the world. Today, such a building is very promising for modern rapidly growing cities, so it is important to track the history of its formation and the features of such planning decisions at different times. Such architecture can become a new vector in the development of modern cities, because low-rise residential buildings are much more comfortable than high-rise buildings. The article gives examples of low-rise city houses in different histories and in different countries. The aim of this work is to review the historical background of the formation of modern high-density low-rise buildings. The following historical examples of low-rise high-density buildings are considered: early single-family residential buildings of the ancient settlements of Mesopotamia and Egypt, residential buildings in Ancient Greece and Rome, blocked residential buildings for workers in the 19th century. In the UK, townhouses of the 1920s and 30s. In the USA, etc. The article shows the planning decisions and the appearance of low-rise high-density residential buildings. The main features of such houses are quarterly development, large-scale man, blocked development and the presence of a small house area.