Network designing and analysis of water supply and sewerage systems
Student name: Ms Simi S Nair
Guide: Dr Devesh Sharma
Year of completion: 2010
Host Organisation: SAI Consulting Engineers Pvt. Ltd.
Supervisor (Host Organisation): Ms Janki D Jethi
Abstract: This report documents the analysis and designing of water supply and sewerage systems. It also
provides an insight for augmenting the existing systems. Specifically it gives an overview of the
strategies which can be employed for obtaining the best possible solution for any water/drainage
systems related issues. The report also suggests requirement of reference to CPHEEO manual for
meeting the desired standards. Analysis and designing of water supply/sewerage systems begins
with the preparation of desk report (identification report) which focuses on requirements of
existing and projected population. Detailed study requires analysis of base map, contour plan and
existing water supply plans. The population can be forecasted by number of methods (but usually
average geometric ratio method was chosen since it gave most probable figures). After
population estimation, the next task is calculation of water requirement based on civics of people,
development requirements and lifestyle. After data is obtained about population and water
requirement, the work then involves strategic planning to make the best possible use of available
storage structures like ESR, Sump and assessment of hydraulic characteristics of pumping
machinery to be installed .LOOP, BRANCH, AutoCAD software are used to analyze the designs
and to work out the best possible planning to design an efficient system. Once the data is ready
and design criteria are met (understood by running the aforementioned software). The work is
concluded by estimating the cost of the project undertaken which involves detailed analysis of
each and every component of the proposed water supply/drainage systems. The most cost effective
solution is chosen as the optimal solution for the given problem.
Keywords: water supply systems, drainage systems, LOOP, BRANCH, AutoCAD
