The main concept is to set a unique structural system and ducts for services pipes to can keep the opportunity for design flexibility up to the end of constructing the whole structural system and building skin. The flexibility means that the typical floor plan can be divided into different unit types (One bedroom, two bedrooms, three bedrooms, & studio “if the social culture can approve it”). This flexibility will make the project a step forward towards the social mixture and gain the optimum level of client satisfaction. Also, the structure system should be built on a sequence to can achieve the best performance for mixed-use development. This project has parking underneath the residential types. The site regulations and codes defined certain dimensions for car parking space and vehicle pathway. The reason for creating a structural grid with (8.00 meters) width from axon to axon is to can have three cars. The horizontal division which is (5.00, 6.40 meters) was created for the car length and the car pathway according to the code. The next presentation will be for the unit’s design which include also flexibility for the unit design itself, for example adding (Mai room with private bath) or eliminating it without any change for structural or service systems.

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