The natural light represents an important factor for the life of man. It fulfills the needs of humans and thus raises his capacities and capabilities. It was observed that people consume artificial lighting during daylight especially in spaces overloading courtyards. This search is intended to examine the problem of the inability of the natural lighting in such spaces to function well in the framework of the building codes and resolved to compensate for the human visual comfort while at the time reducing the electrical consumption and environmental pollution. This aim can be reached by comparative study of simulation using computer and the mean time to cope with the international norms and recommendations of natural lighting for such spaces under study. This will be done in harmony with the requirements of the local building codes and assist in solving the problems of the penetration of light in the interior of the service spaces in the tall building. The findings of such study can be summarized in important steps. The need for rendering the court with white paints of more than 75% reflection or highly reflecting surfaces while observing maintenance. Secondly, n multistory buildings the area of the window should be much larger than recommended by current codes to 15% of floor area instead of the required 10% by law for building up to 30 meters high. Finally for heights of courts more than 30 meters the smallest dimension of courts should not be less than 3 meters wide (current requirements is 2.5m). |
