Water supply and sewerage systems of the residential complex "Nadrichny" (1400 inhabitants) in Ivano-Frankivsk
Students Name: Nakonechnyi Andrii Romanovych
Qualification Level: magister
Speciality: Water Supply and Sewerage System
Institute: Institute of Civil Engineering, Infrastructure and Life Safety
Mode of Study: full
Academic Year: 2025-2026 н.р.
Language of Defence: англійська
Abstract: The master’s qualification work presents a characteristic of the location of the territory of the residential complex "Nadrichny" in the city of Ivano-Frankivsk. The geographical position, terrain, hydrographic network, climatic conditions and features of the natural environment that affect the design of engineering networks are highlighted. The geological development of the site is presented, taking into account the location complex in the north of the city, in close proximity to the river valley and transport infrastructure. In accordance with current methods and regulatory documents, a calculation of water consumption for 1400 residents of the residential complex was performed. The average daily water flow for domestic and drinking needs was calculated as 249.93 m3 /day, hourly water flow was calculated as 17.76 m3 /hour, and the maximum second water flow was calculated as 7.29 l/s. A separate detailed calculation of the intensity of rain and the flow of rain resources from the roofs of buildings and large areas was performed. The total surface water flow was formed as the sum of the flows from roofs and all hard surfaces and is 113.17 l/s. The work presents technical solutions for moving water supply pipelines with natural and man-made obstacles. Particular attention is paid to the intersection with the highway, which is reflected in the graphic part of the project. Requirements for the minimum depth of the pipeline, laying methods, protective casings, and ensuring the operational reliability of the network are given. A solution has been developed for inserting a new water supply pipeline into the existing city network, taking into account hydraulic and technological parameters. The work assessed the possible impacts of the residential complex on the environment. The sources of emissions of pollutants into the atmosphere that may occur during construction were analyzed. The impact on the aquatic environment, foundations, flora and fauna was assessed, measures were determined to prevent pollution of the territory, the organization and use of construction and household waste, as well as measures to reduce noise pollution during construction work. The work compared the design solutions for the residential complex’s drainage system using a feasibility study. According to the results of the calculations, the optimal option was determined to be the use of polyethylene corrugated pipes, which provide lower operating costs, better technical characteristics and economic feasibility in the long term. The scientific part of the work provides an overview of modern approaches to modeling the rainwater collection system, in particular the stochastic StRaHaS method. The application of stochastic models to assess the reliability of the drainage system under conditions of random precipitation and variable water demand was analyzed. The significance of such methods for optimizing the water balance, designing rainwater collection tanks and increasing the resilience of engineering systems in the context of climate risks is revealed. The object of the study is the water supply and drainage system of the residential complex "Nadrichny" in the city of Ivano-Frankivsk. The subject of the study is the efficiency, reliability and quality of functioning of the water supply and drainage system under the conditions of modern urban development. The purpose of the study: to design external water supply and drainage networks of the residential complex, to develop longitudinal profiles of water supply and sewage networks, to design internal water supply and sewage systems of buildings, to calculate water supply and stormwater, to justify decisions regarding insertion into existing networks and intersection with engineering obstacles, and to indicate modern approaches to modeling the rainwater collection system. Research results: – to develop a project for the water supply and drainage system of the residential complex; – longitudinal profiles of the water supply network, domestic and storm sewerage were performed; – internal engineering networks of the building complex were designed; – a full calculation of water consumption and storm water flow was performed; – the decision on the insertion into the existing network and pipeline cross- sections was substantiated; – an analysis of modern stochastic methods for modeling the rainwater collection system and the possibility of their application in urban conditions was provided. Keywords: water supply, water drainage, surface runoff, water consumption, engineering networks, storm water, pipeline cross-section, insertion, stochastic modeling, residential complex. List of used literature sources. 1. DBN V.2.5-64:2012. Internal water supply and sewerage. Part I: Design. Part II: Construction. 2. DBN V.2.5-75:2013. Sewage. External networks and structures. Basic design provisions. 3. DBN V.2.5-74:2013. Water supply. External networks and structures. Basic design provisions. 4. Water supply and drainage of buildings: Methodological instructions for the course work on the discipline “Water supply and drainage”. – Lviv: Publishing house of NU “Lviv Polytechnic”, 2006. – 36 p. 5. Matsievska O.O. Water supply and drainage – Lviv: Publishing house of NU “Lviv Polytechnic”, 2015. – 137 p. 6. Vasylenko L.P. Hydraulics and hydraulic calculations of pipelines. Kyiv: Karavela, 2013. – 296 p. 7. Educational materials of the Department of Water Supply and Drainage of NU “Lviv Polytechnic”. Methodological recommendations for the calculation of external networks, 2020. – 68 p. 8. Methodological instructions for the course “Water supply and sewerage” / Kots I.V., Dzhedzhula V.V., Bauman K.V. – Vinnytsia: VNTU, 2010. – 84 p. 9. Moglia M., Sharma A., Gray S. Rainwater Use in Urban Areas. Water Science & Technology, 2013. – 55 p. 10. Water Environment Federation. Design of Urban Stormwater Controls. WEF Manual of Practice No. 23, 2017. – 450 p. 11. International Water Association. Principles of Water Supply Operations. IWA Publishing, 2016. – 284 p.