Design requirements 1- Low Cost: According to our project's aim, we have to make improvements on the agricultural field in order to keep Egypt’s water share, and this in order means that the project should be affordable, as it is granted that the affordability and the low cost are important factors for the success of any project. In order to achieve the affordability in the project we have to exploit the materials in the surrounding nature which are very cheap, also having a feasibility study for the project is very important because it helps us to control the cost of the project, and from the factors that help. 2-Efficiency: Efficiency is an important factor for the project success, as for having a successful project we should achieve high efficiency because efficiency correlates moderately strongly to overall project success. The project Efficiency is a ratio for determining the relationship between the input and the output of a project, If the outputs are adequate to inputs, then project efficiency is equal to 100%, and if a project is underperformed, then its rate can be 90% so, we have to calculate the efficiency of our project in order to know if our project is successful or not .We can increase the efficiency of our project by many ways including: 3-Safety: Safety is an important design requirement. Which means that the project needs high percentage of safety to avoid disasters from chemicals and sharp materials. To ensure safety our project shouldn’t contain any toxic materials or chemicals that may harm the people, plants and the environment. Another important point is during operation, maintenance, inspection and testing of systems, employees must be aware of the potential hazards they might be exposed to and understand safe work practices necessary around these systems. Employees that will construct the project should understand equipment and Installation Requirements (What systems look like), they must install equipment correctly. 4-Eco-friendly: For a project to succeed, the environmental impact is one of the main requirements to be considered. How the project is affecting the ecosystem in the present or further on is known to be a major variable in starting. An example for its importance, that in June 2003 the European Commission adopted a Communication on Integrated Product Policy (IPP). They were highly aware of the importance of maintaining a balanced clean ecosystem. This 146 highlights the importance of keeping a project eco-friendly. The project can be considered as Eco-friendly as we produce clean water and energy without polluting the air or the nature. And we depend on environmental materials that cannot affect the health of the environment. 5-Applicability: Applicability is one of the primary prerequisites that separates between a logical research and a working, advantageous item. It is the exacting importance of transforming hypothetical speculations into an undertaking that benefits the economy. It is important to re-examine the procedures used to construct a composite venture, with the end goal to protect it works, as a model, as well as in an entire framework, satisfying a particular assignment. This prerequisite is basically expressing whether a logical base, and its reliant undertaking can be developed on a vast scale. The undertaking can be built on a substantial scale as it intended to suit each conceivable circumstance.