As known water is considered one of the natural lives needs because no one can live without it and cannot do his daily works without water. Water supply networks are being used in order to move the water to demand area. When water is being used then the wastewater will be generated.
The traditional method for the disposal of wastewater is by using cesspits. This method has many problems such as the pollution of the groundwater, caused cracks in the nearest foundations, and the wastewater cause disease spread and hygienic problem. Because of these problems the conduits networks must be constructed and from our view we make our design to share solution.
This current situation in Illar, thus this requires to construct a sewage collection network. Construction of the network needs design and this is our rule in the project.
Storm water is the water that originates during precipitation events. It may also apply to water that originates with rain fall that enters the storm water system. Storm water that does not infiltrate into the soil becomes surface runoff, which either flows directly into surface waterways or is channeled into storm sewers, which eventually discharge to surface waters.
When the rain falls on the surface in huge quantity, it can damage crops, houses and infrastructure, so we will design a storm water collection system to avoid previous problems if the design is implemented.
Our design area is large and has large population and does not contain the sewer net works and storm water net works, this was chosen to design by SewerCAD to design wastewater system, and use StormCAD to design Storm water net work.
1.2 Objectives
The main objectives of this project are:
1- To design a wastewater collection network for Illar Village using SewarCAD.
2- To design a stormwater collection network for Illar Village using StormCAD.

	Total cost
	Unit cost($)
	Amount
	Description

	17561
	1
	20660
	Volume of cut (m³)

	48020
	14
	3430
	Volume of sand (m³)

	149130
	9
	16570
	Volume of backfill (m³)

	863100
	63
	13700
	Length for 8 ̏ (m)

	26400
	88
	300
	Length for 10 ̏  (m)

	168324
	338
	498
	Number of manhole 

	91000$/km
	Total unit cost
	1272530
	Total cost of the project






conclusions:
· The cost of the wastewater collection network is 90$/m.
· Finally we found that the minimum velocity of the flow inside the sewer conduit is 0.01 meter per second and the maximum average velocity is 2.95 meter per second.
· A few sewers do not satisfy the minimum velocity criterion at the beginning of the wastewater collection network because the wastewater load is small and the minimum diameter allowed is 8’’.
· For the minimum velocity constraint, to meet it we have to increase the cover depth at the upstream sewers and this will increase the cover depth all over the network.

Recommendations
After the design of the wastewater and a stormwater collection network for Illar village there are some recommendations needs to be mentioned:  
· This project is a primary study and it is not available to be carried out, because it needs more information such as a comprehensive survey of the area.
· Illar municipality can use this project when submitting applications for development projects in the village.


Result 
Sewer results
	Summary table

	Number of Manholes
	498

	Number of Conduit
	497

	Total length   (km)
	14

	Total length of 8˝  diameter (km)
	13.7

	Total length of 10˝ diameter (km)
	0.3

	Maximum Velocity (m/s)
	2.95

	Minimum Velocity  (m/s)
	0.01

	Maximum Cover start (m)
	6.6

	Minimum Cover start (m)
	1

	Maximum Cover stop (m)
	6.4

	Minimum Cover stop (m)
	1

	Maximum Slope (%)
	12

	Minimum Slope (%)
	1







Storm results
	Summary table

	Number of Catch Basin
	497

	Number of Conduit
	497

	Total length   (km)
	13.9

	Total length of 8˝  diameter (km)
	9.2

	Total length of 10˝ diameter (km)
	1.8

	Total length of 12˝  diameter (km)
	0.7

	Total length of 15˝  diameter (km)
	1.3

	Total length of 21˝  diameter (km)
	0.68

	Total length of 24˝  diameter (km)
	0.17

	Total length of 30˝  diameter (km)
	0.03

	Maximum Velocity (m/s)
	5

	Minimum Velocity  (m/s)
	0.41

	Maximum Cover (m)
	7.5

	Minimum Cover (m)
	1

	Maximum Slope (%)
	12

	Minimum Slope (%)
	1