Evaluation of Sub-Soil Geotechnical Properties for Shallow Foundation and Pavement Design in LASPOTECH, Ikorodu Campus, Lagos State, Nigeria

A, Adigun Muritala; A, Olatunji Kayode; O, Alaboru Favour; B, Ogunbajo Abdulhakeem

doi:10.9790/1684-11644047

Cited by 6 publications

(5 citation statements)

References 4 publications

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“…The study methodology involved three phases. In the first phase, geotechnical data (index and engineering properties) were compiled from 212 locations across the 8 LGAs comprising Kano metropolis. Each LGA was divided into at least five sections representing north, east, west, south and central and data representing each section were collected.…”

Section: Methodsmentioning

confidence: 99%

“…The assessment of geotechnical properties of subsoil is indispensable for acquiring the relevant input data essential for the design and construction of foundations for proposed structures. Properties like shear strength, compressibility and permeability dictate the appropriate foundation type, allowable bearing capacity, settlement estimates and construction feasibility [8]. Neglecting the geotechnical characteristics of soils at construction sites has been identified as a significant cause of structural failures [8].…”

Section: Introductionmentioning

confidence: 99%

“…Properties like shear strength, compressibility and permeability dictate the appropriate foundation type, allowable bearing capacity, settlement estimates and construction feasibility [8]. Neglecting the geotechnical characteristics of soils at construction sites has been identified as a significant cause of structural failures [8]. Without understanding the subsurface conditions, foundation systems may be inadequately designed and lead to excessive settlement, bearing capacity failures or slope instability [9].…”

Section: Introductionmentioning

confidence: 99%

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Development of geotechnical properties geo-database for soil in Kano metropolis to enhance building construction

Yunusa,

Kida,

Suleiman

et al. 2024

Nig. J. Tech.

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Building collapse is a prevalent and concerning issue that resulted in significant loss of lives and properties in many places in Nigeria including Kano state and determination of Geotechnical properties of soil could play a crucial role in preventing building collapse. This study uses Geographic Information System (GIS) methodologies to create a geospatial database of soil properties in Kano Metropolis. The database, created using Inverse Distance Weighting (IDW) and spatial interpolation techniques, provides 212 sets of soil properties being meticulously mapped across the study area. These meticulously generated maps illustrate various soil characteristics prevalent in the metropolis, offering invaluable insights for preliminary designs and construction planning for buildings within Kano Metropolis. The soils in this area are predominantly classified as CL (Clay of low plasticity), SC (Sandy Clay), and SM (Silty Sand) using Unified Soil Classification System (USCS). The moisture content spans from 2.01 to 46%, specific gravity within the range of 2.32 to 2.75, liquid limits varying between 17.2 and 45%, plastic limits within the range of 10.1 to 40.5%, and linear shrinkage values spanning from 1 to 13%. Furthermore, the shear strength parameters of the soil across the study area varies. The unit weight varies between 15.61 and 22.16 kN/ m3 , the cohesion (c) values ranging from 1.28 to 29.1 kN/m2 , and the angle of internal friction (ϕ) spanning from 5.5° to 32.2°. Despite variations in ultimate and allowable bearing capacity with depth, the ultimate bearing capacity (qult) generally ranges between 108 and 1150 kN/m2 , with the corresponding allowable bearing capacity (qall) falling between 40 and 343 kN/m2 . This research provides valuable geospatial knowledge to engineers, architects, and construction professionals in Kano Metropolis, enhancing decision-making and project planning precision, ultimately contributing to sustainable development and growth of Kano metropolis.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Development of geotechnical properties geo-database for soil in Kano metropolis to enhance building construction

Yunusa,

Kida,

Suleiman

et al. 2024

Nig. J. Tech.

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show abstract

“…In fact, it is time-consuming and expensive to conduct appropriate soil investigations. But it is a necessary condition to explore soils for associated geotechnical properties and has massive signifcance in designing and providing safety for building structures for any construction work and the users as well [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Characterization of Soils with Analytical and Numerical Simulation for Bearing Capacity and Settlement Requirements of the Footing

Dasho

Aga

2023

Advances in Materials Science and Engineering

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Characterization and analysis of foundation material are basic concerns of geotechnical activities to have safety for the structure and users as well. Particularly, it is quite important for the areas of lagging experiences with a lack of equipment and accessibility to investigate the subsurface conditions sufficiently. This study was designed for comprehensive soil investigations through analytical and Plaxis 2D simulation by considering square footing in Bule Hora town, Southern Ethiopia. Considering the investigation depth up to 5.0 m, fourteen soil samples at 1.5 m and 3.0 m depths (two samples from seven pits) were collected, and physical and engineering properties were investigated. Grain and consistency results indicated that soils lying between low to high plastic silt regions. Undrained shear strength (Cu) ranges from 49.5-–64.30 and 52.40–103.10 kN/m2 at 1.5 m and 3.0 m depth, respectively. An average allowable bearing capacity of 145.35 kN/m2 with a settlement of 40.77 mm at 1.5 m depth and 191.41 kN/m2 with a settlement of 47.84 mm at a depth of 3.0 m using the analytical method whereas 122.72 kN/m2 was obtained with the settlement of 30.57 mm at a depth of 1.5 m and 155.11 kN/m2 with 29.08 mm at depth of 3.0 m using Plaxis 2D analysis. The results of bearing capacity and settlement analyzed by the numerical method are lower than the analytical method, which confirms that comparatively, Plaxis 2D analysis gives a better output in selected square footing of shallow foundations. In conclusion, Plaxis was a preferable analysis tool for a shallow foundation, square footing, using inputs of the exhaustively investigated actual condition of soils specifically in Bule Hora town.

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“…Subgrade soils provided as the bottom base for a road pavement structure are an integral part of the road pavement system that dissipate the traffic loads to the ground, make the road stable and endure adverse climatic condition (Muritala et al , 2014; Alemineh et al , 2020). Failures of road pavement structures are due to weak subgrade properties that do not cater the technical specifications for durability and stability (Ethiopian Road Authority (ERA), 2013; Alqadad et al , 2017; Shimobe and Spagnoli, 2019).…”

Section: Introductionmentioning

confidence: 99%

GIS mapping used as supplementary tool to experimentally investigated subgrade soil for robust pavement design in rural area of Ethiopia

Anka

Dasho

Dirate

et al. 2022

WJE

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Purpose This paper aims to present physical and geotechnical study in terms of experimental field and laboratory investigations of the subgrade soils in severely damaged and highly degraded road section with numerous potholes between Chencha to Ezo towns of Ethiopia needs to be addressed for a robust pavement. Design/methodology/approach Eighteen soil samples were collected from 18 km road stretch at a kilometer interval by considering variation and composition of soils along the road alignment. The field density with dry density, natural moisture content, consistency limit, compaction and California Bearing Ratio (CBR) were determined. Findings Soils were classified predominantly as silty-clay that replicates its expansive nature, characterized as bad to medium subgrade. The average optimum moisture content and maximum dry density are 17.18% and 1.83 g/cc, whereas the average CBR and swell as 8.40% and 1.49%, respectively. The investigated results indicated that the indispensable way for a stable and durable road subgrade in the existing silty clayey soil requires a capping layer. The results were uploaded into ArcGIS platform to create interactive maps for spatial distribution, composition and strength of the subgrade properties. Originality/value Experimental investigation of subgrade soils by scientific procedures and presenting important properties through integrated approach using ArcGIS Mapping for the road pavement design and construction purpose of under developed areas like Chencha-Ezo. ArcGIS-based mapping of all required and numerical subgrade properties with a single click using ArcGIS tool is the main significance and contribution of this study. To the best of the authors’ knowledge, this paper is original, and all the references are properly cited.

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Evaluation of Sub-Soil Geotechnical Properties for Shallow Foundation and Pavement Design in LASPOTECH, Ikorodu Campus, Lagos State, Nigeria

Cited by 6 publications

References 4 publications

Development of geotechnical properties geo-database for soil in Kano metropolis to enhance building construction

Development of geotechnical properties geo-database for soil in Kano metropolis to enhance building construction

Comprehensive Characterization of Soils with Analytical and Numerical Simulation for Bearing Capacity and Settlement Requirements of the Footing

GIS mapping used as supplementary tool to experimentally investigated subgrade soil for robust pavement design in rural area of Ethiopia

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