ISSN 1119-4618
 

Original Article 


Forensic Geotechnical Investigation of Cracks in Buildings around Gubi and Environs, Bauchi, North-East Nigeria

Abdullateef Lawal, Khalid Hashimu Dori, Yusuf Abdulmumin.

Abstract
Abstract
The study aims to undertake a geo-forensic investigation of the major causes of cracks in buildings in Gubi and its environs. To achieve this, geophysical and geotechnical approaches were adopted to characterise the soil properties and subsurface rocks. Five (5) Vertical Electrical Soundings (VES) were purposively carried out using Schlumberger configuration to characterize the geoelectrical properties of the soil. In addition, 10 disturbed soil samples were collected for geotechnical laboratory analyses. The indices analyzed are natural moisture content, particle size distribution, Atterberg limits, free swell index, linear shrinkage, and specific gravity. Three geoelectrical layers comprising topsoil, weathered layer, and bedrock basement were delineated within the study area. The resistivity values (10.8 - 42.8 Ωm) suggest that the top and the weathered layers of VES 1and VES 2 are incompetent clay materials. The results of the geotechnical tests however, revealed that the site is underlain by poorly graded clay sand to sand clays (SC) with low to medium plasticity, specific gravity (2.2 - 2.7), liquid limit (25.8 % - 39.0 %), plastic limit (18.8 % - 35.1 %), natural moisture content (7.10 % - 25.0 %) and linear shrinkage limit (2.8 % - 11.3 %). The result generally shows that the soils in the northeastern parts have natural moisture content, linear shrinkage, and free swell value above the permissible limit for a foundation. It was concluded that differential settlement of the incompetent subsoil materials is responsible for the failure of the foundation materials and building walls.

Key words: Geophysical approaches, Atterberg limits, Shrinkage limit, Weathered layer, Differential settlement


 
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How to Cite this Article
Pubmed Style

Lawal A, Dori KH, Abdulmumin Y, . Forensic Geotechnical Investigation of Cracks in Buildings around Gubi and Environs, Bauchi, North-East Nigeria. JPAS. 2022; 22(2): 386-394. doi:10.5455/sf.140822


Web Style

Lawal A, Dori KH, Abdulmumin Y, . Forensic Geotechnical Investigation of Cracks in Buildings around Gubi and Environs, Bauchi, North-East Nigeria. https://www.atbuscienceforum.com/?mno=140822 [Access: November 12, 2022]. doi:10.5455/sf.140822


AMA (American Medical Association) Style

Lawal A, Dori KH, Abdulmumin Y, . Forensic Geotechnical Investigation of Cracks in Buildings around Gubi and Environs, Bauchi, North-East Nigeria. JPAS. 2022; 22(2): 386-394. doi:10.5455/sf.140822



Vancouver/ICMJE Style

Lawal A, Dori KH, Abdulmumin Y, . Forensic Geotechnical Investigation of Cracks in Buildings around Gubi and Environs, Bauchi, North-East Nigeria. JPAS. (2022), [cited November 12, 2022]; 22(2): 386-394. doi:10.5455/sf.140822



Harvard Style

Lawal, A., Dori, K. H., Abdulmumin, Y. & (2022) Forensic Geotechnical Investigation of Cracks in Buildings around Gubi and Environs, Bauchi, North-East Nigeria. JPAS, 22 (2), 386-394. doi:10.5455/sf.140822



Turabian Style

Lawal, Abdullateef, Khalid Hashimu Dori, Yusuf Abdulmumin, and . 2022. Forensic Geotechnical Investigation of Cracks in Buildings around Gubi and Environs, Bauchi, North-East Nigeria. Science Forum (Journal of Pure and Applied Sciences), 22 (2), 386-394. doi:10.5455/sf.140822



Chicago Style

Lawal, Abdullateef, Khalid Hashimu Dori, Yusuf Abdulmumin, and . "Forensic Geotechnical Investigation of Cracks in Buildings around Gubi and Environs, Bauchi, North-East Nigeria." Science Forum (Journal of Pure and Applied Sciences) 22 (2022), 386-394. doi:10.5455/sf.140822



MLA (The Modern Language Association) Style

Lawal, Abdullateef, Khalid Hashimu Dori, Yusuf Abdulmumin, and . "Forensic Geotechnical Investigation of Cracks in Buildings around Gubi and Environs, Bauchi, North-East Nigeria." Science Forum (Journal of Pure and Applied Sciences) 22.2 (2022), 386-394. Print. doi:10.5455/sf.140822



APA (American Psychological Association) Style

Lawal, A., Dori, K. H., Abdulmumin, Y. & (2022) Forensic Geotechnical Investigation of Cracks in Buildings around Gubi and Environs, Bauchi, North-East Nigeria. Science Forum (Journal of Pure and Applied Sciences), 22 (2), 386-394. doi:10.5455/sf.140822