Validity of SPT–CPT Correlation for Bearing Capacity Prediction of Reclaimed Soils in Lagos Island, Lagos State, Nigeria

References

[1] Dogan R. The world’s largest cities in 2025 by population. ArchDaily [Internet]. 2025 Jul 11 [cited 2026 Nov 3]. Available from: https://www.archdaily.com/1032049/the-worlds-largest-cities-in-2025-by-population

[2] Oyedepo JA, Oluyege DE. Spatiotemporal assessment of wetlands and land reclaim activities in eastern Lagos State Nigeria. Nigerian Journal of Technology. 2024;43(3):577–586.

[3] Ajibade I. Can a future city enhance urban resilience and sustainability? A political ecology analysis of Eko Atlantic city, Nigeria. International Journal of Disaster Risk Reduction. 2017;26:85–92.

[4] Uwaegbulam C. From Broad Street to Atlantic City: Congestion, asset depreciation push HNIs, businesses to Eko Atlantic City. The Guardian (Nigeria) [Internet]. 2025 Aug 11 [cited 2026 Nov 3]. Available from: https://guardian.ng/news/from-broad-street-to-atlantic-city-congestion-asset-depreciation-push-hnis-businesses-to-eko-atlantic-city/

[5] Ibitoye MO, Tata H, Afolabi OO. Delineation of land reclamation areas in Eti-Osa and Lagos Island Local Government Areas of Lagos State. African Journal of Land Policy and Geospatial Sciences. 2024;7(1):113–125.

[6] Tabuke T. Land reclamation in Lagos 2010–2024. The Sun [Internet]. 2024 Jul 29 [cited 2026 Nov 3]. Available from: https://thesun.ng/land-reclamation-in-lagos-2010-2024/

[7] International Society for Soil Mechanics and Geotechnical Engineering. TC217 Land reclamation [Internet]. [cited 2026 Nov 3]. Available from: https://www.issmge.org/committees/technical-committees/applications/land-reclamation

[8] Develioglu I, Pulat HF. Compressibility behaviour of natural and stabilized dredged soils in different organic matter contents. Construction and Building Materials. 2019;228:116787.

[9] Xue CQ, Sun C. Land reclamation in the making of Hong Kong. In: Heathcott J, editor. The Routledge handbook of infrastructure design: Global perspectives from architectural history. New York: Routledge; 2022. p. 294–305.

[10] Yeung AT, So STC. Geotechnical engineering properties of Hong Kong marine clays. In: Lee CF, et al., editors. Soft Soil Engineering: Proceedings of the 3rd International Conference on Soft Soil Engineering; 2001 Dec 6–8; Hong Kong. Lisse: A. A. Balkema; 2001. p. 695–700.

[11] Bo MW, Chu J, Low BK, Choa V. Soil improvement: Prefabricated vertical drain techniques. Singapore: Thomson Learning; 2003.

[12] Oladele S, Faleye BR, Simeon JO. Subsurface exploration for soil geotechnical properties: Implications for infrastructure design and construction in Victoria Island, Lagos, Nigeria. Kuwait Journal of Science. 2026;53(2):100541.

[13] Mesri G, Ajlouni M. Engineering properties of fibrous peats. Journal of Geotechnical and Geoenvironmental Engineering. 2007;133(7):850–866.

[14] ASTM International. ASTM D1586/D1586M-18. Standard test method for standard penetration test (SPT) and split-barrel sampling of soils. West Conshohocken (PA): ASTM International; 2018.

[15] Seed HB, Tokimatsu K, Harder LF, Chung RM. Influence of SPT procedures in soil liquefaction resistance evaluations. Journal of Geotechnical Engineering. 1985;111(12):1425–1445.

[16] ASTM International. ASTM D5778-20. Standard test method for electronic friction cone and piezocone penetration testing of soils. West Conshohocken (PA): ASTM International; 2020.

[17] Terzaghi K. Theoretical soil mechanics. New York: Wiley; 1943.

[18] Meyerhof GG. Some recent research on the bearing capacity of foundations. Canadian Geotechnical Journal. 1963;1(1):16–26.

[19] Meyerhof GG. Penetration tests and bearing capacity of cohesionless soils. Journal of the Soil Mechanics and Foundations Division. 1956;82(1):1–19.

[20] Robertson PK, Campanella RG, Wightman A. SPT-CPT correlations. Journal of Geotechnical Engineering. 1983;109(11):1449–1459.

[21] Danziger FAB, Politano CF, Danziger BR. CPT-SPT correlations for some Brazilian residual soils. In: Robertson PK, Mayne PW, editors. Geotechnical site characterization. Rotterdam: A. A. Balkema; 1998. p. 907–912.

[22] Kara O, Gündüz Z. Correlation between CPT and SPT in Adapazari, Turkey. In: Proceedings of the 2nd International Symposium on Cone Penetration Testing; 2010; Huntington Beach, CA, USA [cited 2026 Nov 3]. Available from: https://www.geoengineer.org/storage/publication/18361/publication_file/2600/18Karcbc.pdf

[23] Akça N. Correlation of SPT–CPT data from the United Arab Emirates. Engineering Geology. 2003;67(3–4):219–231.

[24] Yorùbáness. History of Ikoyi, Lagos [Internet]. 2022 Jun [cited 2026 Nov 3]. Available from: https://yorubaness.com.ng/2022/06/history-of-ikoyi-lagos.html

[25] Discover Lagos. The transformation of Victoria Island: A legacy of land reclamation [Internet]. 2025 Dec 18 [cited 2026 Nov 3]. Available from: https://www.discoverlagos.ng/post/the-transformation-of-victoria-island-a-legacy-of-land-reclamation

[26] Akinwotu E. Waves of change: Nigeria’s Lagos battles Atlantic erosion. Phys.org (AFP) [Internet]. 2019 Jul 10 [cited 2026 Nov 3]. Available from: https://phys.org/news/2019-07-nigeria-lagos-atlantic-erosion.html

[27] Bureau of Indian Standards. IS 6403:1981. Code of practice for determination of bearing capacity of shallow foundations (first revision). New Delhi: Bureau of Indian Standards; 1981.

[28] Peck RB, Hanson WE, Thornburn TH. Foundation engineering. 2nd ed. New York: Wiley; 1974.

[29] Montgomery DC, Runger GC. Applied statistics and probability for engineers. 6th ed. Hoboken (NJ): Wiley; 2014.

@article{1724818,
      author = {Opeyemi Solomon Akinyode, Folake O. Akintayo},
      title = {Validity of SPT–CPT Correlation for Bearing Capacity Prediction of Reclaimed Soils in Lagos Island, Lagos State, Nigeria},
      journal = {Iconic Research And Engineering Journals},
      year = {2026},
      volume = {10},
      number = {5},
      pages = {1543-1558},
      issn = {2456-8880},
      url = {https://www.irejournals.com/formatedpaper/1724818.pdf},
      abstract = {Background: Engineers often apply published, generic SPT–CPT correlation ratios to estimate one test from the other when only one is available. These ratios were developed for natural soils, and their validity for reclaimed soils in Lagos Island, Nigeria, has not been tested. Methods: Secondary SPT, CPT and borehole data from six reclaimed sites in Ikoyi, Victoria Island, Lekki and Sangotedo were analysed. Allowable bearing capacity was computed from SPT data using Meyerhof’s general bearing capacity equation (factor of safety of 3) and from CPT data using Meyerhof’s (1956) direct method. The site-derived ratio qc/N was compared with published values from Brazil (Danziger et al., 0.39 MPa) and the United Arab Emirates (Akça, 0.30–0.45 MPa), including a one-sample t-test. Results: SPT-based allowable bearing capacity ranged from 237.5 to 404.5 kPa and CPT-based capacity from 245.2 to 653.8 kPa. The site-derived qc/N had a mean of 0.559 MPa (range 0.245–0.823 MPa), a coefficient of variation of 40.3% and a 95% confidence interval of 0.323–0.795 MPa. Only one of the six sites (Site A, 0.441 MPa) fell within the published range, although the mean did not differ significantly from the Danziger value (p = 0.13). Conclusion: Published generic SPT–CPT correlation ratios are not reliable for reclaimed soils in Lagos Island, because only one of the six sites fell within the published range. Site-specific data should be used or, where unavailable, the site-derived mean or the wider 95% confidence interval established here should be adopted as a fallback.},
      keywords = {Bearing capacity; Cone Penetration Test; reclaimed soils; SPT–CPT correlation; Standard Penetration Test},
      month = {November},
  }