Geophysical and Geotechnical Investigation for Post Foundation Studies, Faculty of Social Sciences and Humanities, Federal University Oye Ekiti
| Autor: | Odunayo Bamidele, Akindeji Opeyemi Fajana, Oladunjoye Olabode, Olayiwola G. Olaseeni |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | FUOYE Journal of Engineering and Technology. 1 |
| ISSN: | 2579-0625 2579-0617 |
| DOI: | 10.46792/fuoyejet.v1i1.17 |
| Popis: | A combined geophysical methods involving very low frequency-electromagnetic, electrical resistivity, magnetics prospecting method and geotechnical investigations were used in delineating the causes of cracks on the buildings of Faculty of Social Science and Humanities, Federal University Oye- Ekiti. Five (5) Very Low Frequency-Electromagnetic traverses, Twenty-one (21) Vertical Electrical Soundings and three (3) magnetic profiles were occupied and investigated around the distress building. Two (2) locations were also occupied for geotechnical investigations. Three major layers were delineated in the study area which includes the topsoil, weathered/fractured layer and fresh basement. The VES curve types obtained were A, H, K and Q curves. The buildings were found to be situated within the area of a fairly high concentration of fractures that can aid subsidence in the area and relatively low resistivity zones typical of incompetent clay formation. The geotechnical results also show that the soil has relatively high clay content. Based on the consistency limits. The soils within the area is classified as medium plasticity, hence, the soils are expected to exhibit medium swelling potential. It can however be concluded that the subsoils on or within which buildings are founded within the study area are not competent. From the result, the building failure observe as cracks and foundation subsidence may have been caused by the foundation soils that made up of incompetent materials (clay) which could compress on imposing loads by differential settlement. It is noteworthy that geological features such as fractures/faults delineated within the bedrock is also inimical to the building foundation. |
| Databáze: | OpenAIRE |
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