Vol 5, No 3 (2015)

The article focuses on the formation of Samara planning pattern while applying the method of component analysis of the changes in the city planning pattern and outlining the interdependence of these changes in the process of investigating the genesis of the planning pattern. The paper shows different stages of the quantitative growth of the city and qualitative changes in its planning organization. Quantitative growth of the road network in Samara and its qualitative changes over the time are investigated. The stages of both nodal and linear urban centers formation are marked. Processes of intensive and extensive development of these centers are described. Quantitative growth rates for all components of Samara planning pattern are determined. These figures are summarized in the tables. In conclusion a graphical sheme of the genesis of Samara planning pattern is put forward.

In the article the author dwells upon blending of two cultures, Russian and European, in order to find something fresh and new. For some time architects were trying to search for Russian authenticity both in architecture and without. The author describes this idea of combining beautiful and useful as old-fashioned and urges to look for new solutions to the problem

The article dwells upon renovation of several large industrial parts of Samara. The authors explore the history of the development of industrial enterprises which were formed the first part of the 20th century, and the reasons of their land degradation. The article summarizes the characteristics of former industrial areas urban location and the problems of their development. It is concluded that prospects of these newly emerged territories in the public areas of the city are unique. Shortcomings of the proposed projects for the land reconstruction are analyzed. The authors aim to develop a methodology for renovation and fundamental transformation of these large industrial areas.

The paper states that operating sewage pumping station always goes together with high electrical energy consumption, even if most suitable sewage pumping is used. Under conditions of strongly marked land forms with height difference the authors suggest using the so-called “continuity of stream” and claim that it would result in short-term work of water-pumping sets. This method would allow to enlarge water-pumping sets overhaul period and to reduce energy costs. The paper introduces practical results obtained while operating a certain sewage facility. These results make possible to calculate the efficiency of the introduces method of clean water runoff pumping.

The aim of this paper is to introduce results of an experimental research of a spillway with a wide threshold. To identify this spillway main characteristics the authors use traditional methods of hydraulic calculations. The paper presents experimental data of a spillway with a wide threshold at δ/H>8...10 which were obtained on a hydraulic tray in the laboratory of hydro technical structures and structural engineering of Don State Agrarian University named after A.K. Kortunov. The research demonstrates basic dependences for the event of water leakage through a spillway with a wide threshold for a fl at stress problem. The obtained values of discharge coefficient for a spillway with a wide threshold at δ/H>8...10 are within the limits of 0,303≤mспр≤0,305 with a relative error 0.0242-0.0076%. Taking in account experimental studies and using a well-known formula by H.А. Tibara the authors specified the dependence for calculating discharge coefficient for a spillway with a wide threshold. The experimental results were mathematically processed by Microsoft Excel, and a new empirical dependence m=f(P/H) was introduced.

The paper states that maximum permissible emission analysis was brought about by the necessity to show that emissions from boiler plants infl uence the environment and the degree of this infl uence. The authors are the fi rst to investigate the sources of atmospheric pollutant emission. Their experiment involved introducing maximum permissible emission for every boiler plant. This emission was taken as MPE for the existing situation. The calculation of diff usion made with UPRZA-program showed that there was no excess in the harmful substances of boiler plants emission.

The paper describes automated hydropower stations for power supply and energy saving of independent consumers in Altai Krai and Altai Republic. These stations present various types of micro hydroelectric power stations with water fi lling wheels, axial water-wheels and blocks of automatic control of electric loading which were developed and introduced by the authors. The main technical characteristics of these micro-HPPs are given.