The impact of constructivism density of the urban tissue in improving the physical urban ambience of the free space - The street- for Saharian cities. The study of the case city of Biskra

Abstract

The urban tissue is designed for a major and an important role, which is the protection of the free space under the physical data that surrounds it. Thus the protection of the free space is one of the most important objectives of the constructed mass for the tissue. That's why the success of the tissue in providing a great deal of the protection from the physical factors is considered as a success in the design and engineering of this tissue. Here comes this research. Which is based on a comparative study of the ambience physical elements, via two urban tissues that contain different constructivism density and the conclusion of the effect of every tissue in improving the physical ambience for the free space - the street -.the research is based on the comparison of three main axes of the physical ambience, they are 1-the Thermal ambience, 2-the visual ambience. 3- the Audio ambience. The cording to that the methodology of the research was due to the field of experience in order to raise the real values of the physical ambiences every two hours, each three consecutive days. According to the measurement stations that is positioned via the three types of the street engineering (H≥2W, H=W, H≤0.5W). Through the obtained results and with the comparison of those values. We noticed and recorded the difference between these values in the three types of street engineering. The difference in the thermal values of the air reached 4 ° C, and the difference in the direct natural lighting periods of the high amount reached six hours. Even the recording of difference in the level sound values can reach 15 (db) between the three types. This difference in values indicates the impact of constructivism density in improving the physical urban ambience within the free space - street- for urban tissue. And this means that the urban tissue smart and sustainable city in the desert.