الفهرس 
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Abstract
The water supply project is one of the important projects in our
orld, that is required for developing . The water distribution system
eluding, pipes, fittings, valves, tanks and pumps. Determining the
osts of project, and how to minimize these costs are the most important
bjectives through analysis and design with good level of service. The
cost of the distribution system of any water supply system may account
or 50% or more for the system entire cost. Water network of any city
requires periodic expansion and improvement to get rid of bad service
problems.
Taking into consideration a flow distributions which satisfying the
flow continuity at each junction, and conservation of head pressures
around any closed loop. Faqus network sector as an example. Several
attempts have been carried out and finally a trail was submitted toward
solving such problems. Developing optimum solutions are carried out
using computer.
This thesis studying the factors which affect on the optimum
design. These factors are: pressure head, flow rate, pipe diameters,
velocity of flow through network pipes and head losses. This study
presents the assumed data as population, water consumption and water
ource are expected to be in the year 2025, also the inflow, out flow,
pressure, pipeline data and junction data. The obtained results of
computer are discussed for the two proposed designs which solve most
of the drawbacks of the network . The first design is composed of forty
three pipes in twelve closed loops and the second design of forty nine
pipes in seventeen closed loops. The first design is recommended due to