الفهرس 
INTRODUCTIONيوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
The main aims of this study concern mainly with delineation and evaluation of structural patterns prevailed in the industrial region of the New Cairo City as well as determination and estimation of nature of the over-buried foundation layers and their geotechnical characteristics in the area. This area far 24 km south-east ward from the Egyptian Capital ”Cairo” town and located between latitudes 29° 56’ 45.68” and 29° 58’ 47.53 N and longitudes 31° 28’ 1.69” and 31° 30’ 17.74” E covers a surface area of about 15 Km2.
The present study embraces laboratory measurements of test wells rock properties, two-dimension resistivity, and shallow seismic refraction surveys. The study aims at detailing the prevailing subsurface conditions from the viewpoint of Geotechnical and structural location, depth and quality. Also, it includes detecting the nature and the shape of the subsurface layers.
The focused geophysical study involves the first method as Electrical Resistivity Tomography ”ERT” in two-dimension array. The second method is the shallow seismic refraction study. According to the previous used methods, they suggest a succession of three layers. The geotechnical parameters of the foundation layers have been seismically specified. These parameters allow for dividing the area into parts of different competence nature and consequently different construction suitability. The two methods suggest a succession of three layers, these layers can be described as surface layer ”mixed soil of clay, sand, and gravel”, second layer ”Marley or argillaceous limestone”, third layer ”Hard limestone”.
In conclusion, it is outstanding to mention that, within the investigated depth of seismic profiles, their interpreted layers are in close agreement with the ERT method that used in the shape and the thickness of the interpreted layers. This study is clearly supporting the achieved results from the three used techniques especially in the geotechnical fields.