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[References: р. 3496-3497 (24 tit.)]

Geotechnical aspects of the Flood plain deposits in south east Aswan City were investigated to evaluate their geotechnical behaviour. Flood plain deposits in the study area composed of soft soils which are difficult to both sample and test. The paper describes some geotechnical properties of these soft soils which representing the foundation bed for engineering constructions in south east Aswan City. Laboratory tests were carried out to assess the physical and mechanical properties of the soils. Different types of soft soils were detected by drilling six boreholes all over the studied zones including friable clays, clayey sand with remains of calcareous materials and well graded sand with gravel. The particle size distribution classified samples as clayey sand (SC) and well graded sand (SW). The investigated soil samples which were tested have low to medium water content and the water content were increased with increase the depth. Also the friable clay had low density and classified as loose soil, while well graded sand and clayey sand had medium to high density values and classified as medium to high dense soil. The unconfined compressive strength showed promising values in range of 1.86 - 22.1Mpa. Shear characteristics of the fine grained soils (friable clay) possessed the lowest peak friction angle (17?), while the medium to coarse grained sands had the highest peak friction angle (25?). Clay samples displayed moderate swelling pressure, in the vicinity of 16kg/cm2, pointing to less probability for various problematic situations during and after constructing processes. The extracted water from soil samples under investigation showed not aggressive manner.