Evaluation of allowable bearing capacity of Ayila Soil, south-west Nigeria

Accurate determination of allowable bearing capacity of soil is key to geotechnical foundations design so as to prevent collapse of structures built on them. Allowable bearing capacity of the study location has been determined by shear wave velocity approach. The seismic data used in this study are...

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Main Authors: V.C. Ozebo, F.E. Ikuemonisan
Format: Article
Language:English
Published: Joint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP) 2019-05-01
Series:Journal of Applied Sciences and Environmental Management
Subjects:
Online Access:https://www.ajol.info/index.php/jasem/article/view/186379
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author V.C. Ozebo
F.E. Ikuemonisan
author_facet V.C. Ozebo
F.E. Ikuemonisan
author_sort V.C. Ozebo
collection DOAJ
description Accurate determination of allowable bearing capacity of soil is key to geotechnical foundations design so as to prevent collapse of structures built on them. Allowable bearing capacity of the study location has been determined by shear wave velocity approach. The seismic data used in this study are the in-situ shear and compressional wave velocities values measured by a 12-channel signal enhancement seismograph. Three layers were detected by the method. Empirical formulations and mathematical relationship between seismic velocities and elastic parameters were used to evaluate the allowable bearing capacity and other parameters presented in Table 1. Results show that allowable bearing capacity for layer 1 ranges from 123.56 to 173.54kN/m2. Layer 2 ranges from 233.24 to 377.62kN/m2, while layer 3 ranges from 437.62 – 616kN/m2. It was observed that allowable bearing capacity increases with depth – a 13% difference between layers 1 and 2 while between layer 2 and 3 there is a 22% difference. By comparison, the allowable bearing capacities evaluated in this study are in agreement with empirical values of allowable bearing capacity of soils proposed by other scholars. Findings show the study location is suitable for geotechnical foundation designs. Keywords: Ayila, Shear wave velocity, Allowable bearing capacity, Coefficient of subgrade reaction
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spelling doaj.art-2cc01b3076744209b4aa4c593490cc702024-04-02T19:50:50ZengJoint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP)Journal of Applied Sciences and Environmental Management2659-15022659-14992019-05-0123410.4314/jasem.v23i4.7Evaluation of allowable bearing capacity of Ayila Soil, south-west NigeriaV.C. OzeboF.E. Ikuemonisan Accurate determination of allowable bearing capacity of soil is key to geotechnical foundations design so as to prevent collapse of structures built on them. Allowable bearing capacity of the study location has been determined by shear wave velocity approach. The seismic data used in this study are the in-situ shear and compressional wave velocities values measured by a 12-channel signal enhancement seismograph. Three layers were detected by the method. Empirical formulations and mathematical relationship between seismic velocities and elastic parameters were used to evaluate the allowable bearing capacity and other parameters presented in Table 1. Results show that allowable bearing capacity for layer 1 ranges from 123.56 to 173.54kN/m2. Layer 2 ranges from 233.24 to 377.62kN/m2, while layer 3 ranges from 437.62 – 616kN/m2. It was observed that allowable bearing capacity increases with depth – a 13% difference between layers 1 and 2 while between layer 2 and 3 there is a 22% difference. By comparison, the allowable bearing capacities evaluated in this study are in agreement with empirical values of allowable bearing capacity of soils proposed by other scholars. Findings show the study location is suitable for geotechnical foundation designs. Keywords: Ayila, Shear wave velocity, Allowable bearing capacity, Coefficient of subgrade reaction https://www.ajol.info/index.php/jasem/article/view/186379AyilaShear wave velocityAllowable bearing capacityCoefficient of subgrade reaction
spellingShingle V.C. Ozebo
F.E. Ikuemonisan
Evaluation of allowable bearing capacity of Ayila Soil, south-west Nigeria
Journal of Applied Sciences and Environmental Management
Ayila
Shear wave velocity
Allowable bearing capacity
Coefficient of subgrade reaction
title Evaluation of allowable bearing capacity of Ayila Soil, south-west Nigeria
title_full Evaluation of allowable bearing capacity of Ayila Soil, south-west Nigeria
title_fullStr Evaluation of allowable bearing capacity of Ayila Soil, south-west Nigeria
title_full_unstemmed Evaluation of allowable bearing capacity of Ayila Soil, south-west Nigeria
title_short Evaluation of allowable bearing capacity of Ayila Soil, south-west Nigeria
title_sort evaluation of allowable bearing capacity of ayila soil south west nigeria
topic Ayila
Shear wave velocity
Allowable bearing capacity
Coefficient of subgrade reaction
url https://www.ajol.info/index.php/jasem/article/view/186379
work_keys_str_mv AT vcozebo evaluationofallowablebearingcapacityofayilasoilsouthwestnigeria
AT feikuemonisan evaluationofallowablebearingcapacityofayilasoilsouthwestnigeria