الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
The user spends most of his time in his own room, whether to spend free time or to complete many tasks and in the year 2020, one of the emerging circumstances around the world appeared, which is COVID 19, which made everyone turn to the concept of work at home, to limit the spread of the virus, so personal rooms became Most of the daylight hours are work offices and study places, so you need optimal lighting at the lowest possible costs. Relying on artificial light for long periods results in a negative return on the human being in various aspects such as the health, psychological and economic aspect.... etc. This return may be directly or indirectly, which affects the performance of the individual as it reduces his production capacity. On the other hand, it increases electricity consumption. Many studies have proven that artificial lighting for the housing sector in Egypt occupies a prominent position in electricity consumption, which indicates the existence of a problem that needs effective solutions. God has blessed us with a great blessing that has no alternative at all, which is the natural light, which is characterized by its great ability to improve the psychological and health status of the user and thus increase his activity and productivity at work and complete many tasks unlike artificial light. Hence the role of the architect in meeting this important need within the space in which man spends most of his time, this element must be taken into account in the design process. Local building laws and codes support this role through the conditions and requirements that they provide in their texts and must be applied by the concerned authorities in order for the owner to obtain building permits before implementing any step on the site. Therefore, there is an urgent need to research about the shortcomings of the Egyptian building law 119 for 2008 in this subject by reviewing the available literature and referring to a set of definitions that help the reader to understand some of the important terms on which the thesis is based. Also, an analytical comparison of the Egyptian Building Law with a group of other codes for different countries, with the aim of identifying the gaps in the law and knowing the possibility of improving it. This was not satisfied with the theoretical and analytical framework only for this study, but the study was supported by an applied framework through the use of one of the distinguished simulation programs in many studies of daylight, known as VELUX, as it is easy to use by different parties, both specialists and non-specialists. Through this program A graph has been reached that can be used as a tool to know the efficiency of residential room design in terms of meeting the user’s need for daylight in addition to urban design where the relationship between street widths and the buildings height and its impact on daylight as well. The thesis concludes with a summary of its results, in addition to recommendations for the parties concerned with the development and drafting of the local Egyptian building code, and finally, it provides recommendations for further future research on the subject.