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Soil Investigation

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Soil Investigation

Soil investigation is one of prime importance in the construction industry. It is required before constructing any new structure to avoid failure of foundations at a later stage. Bearing capacity and nature of the soil are to be ascertained to ensure the stability of the foundation. This is because foundation failures in structures are practically irreparable.

Since it is of utmost importance in any construction project, soil investigation for grass root development projects is mandatory. Geoscan Pte Ltd carrying out  soil investigation and preliminary foundation designs, both in Singapore and overseas.


In the soil investigation process, Geoscan Pte Ltd collects undisturbed samples (UDs) as well as carry out Standard Penetration Test (SPT), permeability test, vane shear test and core sampling upon client’s specification.


Soil Investigation is carried out as part of Geotechnical Investigation which are performed by geotechnical personnel or engineering geologists to obtain information on the physical properties of soil and rock around a site to design earthworks and foundations for proposed structures and for repairs to earthworks and structures caused by subsurface conditions. A soil investigation will include surface exploration and subsurface exploration of a site. Sometimes, geophysical methods are used to obtain data about sites. Subsurface exploration usually involves soil sampling and laboratory tests of the soil samples retrieved.

To obtain information about the soil conditions below the surface, some form of subsurface exploration is required. Methods of observing the soils below the surface, obtaining samples, and determining physical properties of the soils and rocks include test pits, trenching, boring, and in situ tests.

Soil samples are obtained in either "disturbed" or "undisturbed" condition; an undisturbed sample is one where the condition of the soil in the sample is close enough to the conditions of the soil in-situ to allow tests of structural properties of the soil to be used to approximate the properties of the soil in-situ; a disturbed sample is one where the condition is loose and exposed for classification purposes.

The collected samples are tested in a certified soil laboratory and data are analyzed and incorporated into the report.


Almost all the latest techniques available internationally in soil investigation are being practiced in Singapore.