Geo-Technical Sub-surface Exploration for Delineation of Structural Foundations: A Case Study of Technical University, Ibadan, Nigeria

Abstract

Sub-surface exploration provides valuable input regarding the type, age and depositional environment of geologic formations existing at a site for use in planning and interpreting the site conditions. Hence, the objective of this paper was to evaluate and provide data on the geo-technical sub-surface exploration for delineation of structural foundations in Technical University, Ibadan, Nigeria using Vertical Electrical Sounding (VES) to determine the suitability of the sub-surface competence of the site for construction purposes and building development in the institution. The results indicated that the resistivity value of different geo-electric layers showed that geologic value greater than 20 m (thick weathered bedrock) can support massive civil engineering structure while 5-10 m can support small civil engineering structure.

Keywords

• Vertical Electrical sounding, Schlumberger, geo-electrical section, resistivity, weathered bedrock