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ABSTRACT
This objective of this study is to determine the geotechnical properties of Tropical soil samples gotten from different depth of the same borehole and use the results to determine its suitability for building construction. Tropical soils were collected from Ugbor, Benin City at varying depths of 1.5m, 3.5m and 6.5m. The soil samples were all subjected to the same laboratory test which include Moisture content determination, British standard compaction, Particle size analysis, Atterberg limit (liquid and plastic limit) test, specific gravity determination and Triaxial tests. The results showed that the soils have high plasticity and low cohesive strength. The high plasticity can pose a major threat to structures. The maximum dry density(MDD) of these soils also didn’t meet the standard the Nigeria Federal and Housing 1970. The high plasticity in this region must be considered when constructing buildings and extra attention must be paid to the 3.5m depth as it has the highest plasticity and a higher risk of failure.
