<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The study integrates geophysical and geotechnical methods for subsoil evaluation and shallow foundation design. The study involved six vertical electrical sounding and geotechnical investigation involving cone penetration test and laboratory soil analysis. Three major geologic units were delineated; the topsoil, weathered layer and partly weathered/fractured/fresh bedrock. The overburden thickness is in between 15.2–32.9 m. Based on resistivity (16–890 ohm-m) and thickness (12.7–32 m) the weathered layer is competent to distribute structural load to underlying soil/rock. The groundwater level varies from 4.5 to 12.3 m. Therefore an average allowable bearing capacity of 200 kPa is recommended and would be appropriate for design of shallow foundation in the area, at a depth not less than 1.0 m with an expected settlement ranging from 9.03–48.20 mm. The ultimate bearing and allowable bearing capacity for depth levels of 1–3 m vary from 1403–2666 kPa and 468–889 kPa for strip footing while square footing varies in between 1956–3489 kPa and 652–1163 kPa respectively.</p></abstract>

The study integrates geophysical and geotechnical methods for subsoil evaluation and shallow foundation design. The study involved six vertical electrical sounding and geotechnical investigation involving cone penetration test and laboratory soil analysis. Three major geologic units were delineated; the topsoil, weathered layer and partly weathered/fractured/fresh bedrock. The overburden thickness is in between 15.2–32.9 m. Based on resistivity (16–890 ohm-m) and thickness (12.7–32 m) the weathered layer is competent to distribute structural load to underlying soil/rock. The groundwater level varies from 4.5 to 12.3 m. Therefore an average allowable bearing capacity of 200 kPa is recommended and would be appropriate for design of shallow foundation in the area, at a depth not less than 1.0 m with an expected settlement ranging from 9.03–48.20 mm. The ultimate bearing and allowable bearing capacity for depth levels of 1–3 m vary from 1403–2666 kPa and 468–889 kPa for strip footing while square footing varies in between 1956–3489 kPa and 652–1163 kPa respectively.

Engineering Site Investigation and Shallow Foundation Design in Ore Area of Ondo State, Nigeria

Department of Civil Engineering Technology, Faculty of Engineering Technology

Materials and Geoenvironment

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Inženirsko kartiranje in načrtovanje plitvega temeljenja na območju Ore v zvezni državi Ondo, Nigerija

The study integrates geophysical and geotechnical methods for subsoil evaluation and shallow foundation design. The study involved six vertical electrical...

Engineering Site Investigation and Shallow Foundation Design in Ore Area of Ondo State, Nigeria

Article Category: Original scientific paper

Published Online: Jun 29, 2020

Page range: 21 - 33

Received: Jan 31, 2020

Accepted: Mar 19, 2020

DOI: https://doi.org/10.2478/rmzmag-2020-0004

Keywords
cone penetration test, vertical electrical sounding, settlement analysis, bearing capacity, Ore southwestern

© 2020 Olumuyiwa, O. Falowo, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Engineering Site Investigation and Shallow Foundation Design in Ore Area of Ondo State, Nigeria

Article Category: Original scientific paper

Published Online: Jun 29, 2020

Page range: 21 - 33

Received: Jan 31, 2020

Accepted: Mar 19, 2020

DOI: https://doi.org/10.2478/rmzmag-2020-0004

Keywordscone penetration test, vertical electrical sounding, settlement analysis, bearing capacity, Ore southwestern

© 2020 Olumuyiwa, O. Falowo, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
cone penetration test, vertical electrical sounding, settlement analysis, bearing capacity, Ore southwestern