Site Investigations of Subsurface Conditions Using Electrical Resistivity Method and Cone Penetration Test at Medina Estate, Gbagada, Lagos, Nigeria
No Thumbnail Available
Date
2010
Authors
Oyedele, K.F
Olorode, D.O
Journal Title
Journal ISSN
Volume Title
Publisher
World Applied Sciences Journal
Abstract
Several buildings at Medina Estate, Gbagada, Lagos State, have undergone differential settlement
of various degrees. An investigation was therefore carried out to unravel the prevalent subsurface geological
conditions. 1D and 2D resistivity measurements alongside cone penetration tests were carried out within the
undeveloped part of the estate. The results of the tests showed the site to be underlaid by various shades of
clay occurring from existing ground to over 20m in many parts of the site. Sands of appreciable thickness were
found to occur at depth range of 14 to over 25m in some parts of the site. The information obtained showed that
the soil at shallow depths consists of an extensive layer of material of extremely low shear strength and a
corresponding high volume of compressibility potential, thus making shallow foundation impossible except
some form of soil improvement.
Description
Keywords
Geophysical , Geotechnical , Unfossilifereous , Geoelectric , Resistivity
Citation
Oyedele, K.F. & Olorode, D.O. (2010). Site investigations of subsurface conditions using electrical resistivity method and Cone Penetration Test at Medina Estate, Gbagada, Lagos, Nigeria. World Appl. Sci. J, 11(9), 1097-1104.