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

O. Falowo Olumuyiwa
O. Falowo Olumuyiwa
   | 29. Juni 2020
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Article Category: Original scientific paper
Online veröffentlicht: 29. Juni 2020
Seitenbereich: 21 - 33
Eingereicht: 31. Jan. 2020
Akzeptiert: 19. März 2020
DOI: https://doi.org/10.2478/rmzmag-2020-0004
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© 2020 Olumuyiwa, O. Falowo, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Figure 1

Location Map showing data acquisition points.
Location Map showing data acquisition points.

Figure 2

Geological map of Southern part of Ondo State.
Geological map of Southern part of Ondo State.

Figure 3

Field Pictures of the thick lateritic clay deposit in Odigbo and Cone penetration test.
Field Pictures of the thick lateritic clay deposit in Odigbo and Cone penetration test.

Figure 4

Geoelectric Section along Traverse 1 in Odigbo.
Geoelectric Section along Traverse 1 in Odigbo.

Figure 5

Geoelectric Section along Traverse 2 in Ore.
Geoelectric Section along Traverse 2 in Ore.

Figure 6

Robertson Chart for the soil classification using cone resistance and friction ratio values.
Robertson Chart for the soil classification using cone resistance and friction ratio values.

Figure 7

Plots of Cone resistance and sleeve resistance against depth at location 1 and 2, corresponding to (a) Odigbo CPT 1 (b) Ore CPT 2.
Plots of Cone resistance and sleeve resistance against depth at location 1 and 2, corresponding to (a) Odigbo CPT 1 (b) Ore CPT 2.

Geotechnical/Engineering Properties of soil in location 2.

Depth (m)Cone ResistanceSleeve ResistanceFriction RatioL.L (%)P.L (%)P.I (%)S.L (%)M.C (%)% Gravel% Sand% Silt% ClayS.G
0.220301.5041.624.117.537.911.8-32.031.236.82.70
0.435501.43
0.650701.4051.730.121.619.118.7-43.620.835.62.69
0.860851.42
1.060901.5057.337.419.938.616.8-36.928.934.12.69
1.21001401.40

Bearing Capacities estimated from the Cone resistance values for both sites (locations).

Depth (m)CPT 1CPT 2
(kPa)(kPa)(kPa)(kPa)
0.24914749147
0.49829486257
0.6142426123368
0.8123368147441
1.0152456147441
1.2172515245735
1.4208625--

Settlement variation at Different Depths and Foundation Widths.

Foundation width (m)Settlement (mm) at Depth Level (m)
1 m2 m3 m
0.643.9745.6448.20
1.224.4927.2030.70
1.520.1323.0726.82
2.014.5317.5421.33
3.09.0312.3216.21

Bearing Capacities for Strip and Square Shallow Foundations in the Study area.

Depth (m)StripSquareStripSquare
(kPa)(kPa)(kPa)(kPa)
114031956468652
218702523623841
3266634898891163

Geotechnical/Engineering Properties of soil in location 1.

Depth (m)Cone ResistanceSleeve ResistanceFriction RatioL.L (%)P.L (%)P.I (%)S.L (%)M.C (%)% Gravel% Sand% Silt% ClayS.G
0.220351.7530.520.310.29.96.30.125.356.917.72.65
0.440601.50
0.658701.2127.219.47.806.310.50.244.643.511.72.65
0.850601.20
1.062701.1335.820.914.910.212.6-22.054.922.82.65
1.270901.29
1.4851201.4134.119.814.311.812.2-28.463.38.42.65
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