Near-surface seismic refraction method and electrical resistivity methods were used to characterise the subsurface of a site reclaimed fromudwater bodies, in order to determine the depth to the most competent layer for construction purposes. Nine seismic refraction profiles wereudsurveyed and the data was interpreted using SeisImager software package. Also, twelve vertical electrical soundings were carried out and theudacquired data was interpreted using WinResist computer package. The seismic refraction method delineated three layers while the electricaludresistivity method revealed between four and five geoelectric layers. The result of the seismic refraction method showed that the third layer isudthe most competent layer having the highest elastic moduli. Furthermore, the resistivity method revealed that the third geoelectric layer is theudmost competent having resistivity ranging between 23.3 and 1107.2m . It was also discovered that the depth to the most competent layer isudbetween 7 m and 18 m in the subsurface. It was concluded that piling will be the most appropriate foundation for any building in the study area.
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