A geotechnical investigation is conducted to gather information about the soil properties and conditions at a site, which is crucial for designing the foundation of a structure and assessing the stability of the site.

Standard Penetration Test (SPT), Cone Penetration Test (CPT), and Auger Boring are all widely used methods for soil sampling in geotechnical investigations.

Grain size analysis is conducted to determine the soil texture and classification, which provides valuable information about the soil's engineering properties and behavior.

Relative density is a key soil property used to assess the liquefaction potential of a soil. It represents the ratio of the in-situ density to the maximum density of the soil.

Permeability tests are conducted to determine the rate of water flow through the soil, which is crucial for evaluating the drainage characteristics of the soil and designing appropriate drainage systems.

Direct shear test, Triaxial shear test, and Unconfined compression test are all widely used methods for determining the shear strength of a soil.

Consolidation tests are conducted to determine the settlement of a soil under load, which is crucial for designing foundations and assessing the stability of structures.

Standard Penetration Test (SPT), Cone Penetration Test (CPT), and Plate load test are all commonly used methods for evaluating the bearing capacity of a soil.

Site reconnaissance is conducted to gather preliminary information about the site, such as the topography, geology, hydrology, and existing structures, which helps in planning the geotechnical investigation and identifying potential geotechnical hazards.

Borehole drilling, Geophysical surveys, and Trial pits are all commonly used methods for investigating the subsurface conditions of a site.

Laboratory testing programs are conducted to determine the soil properties and behavior, such as strength, compressibility, permeability, and shear strength, which are crucial for designing foundations and assessing the stability of structures.

Standard Penetration Test (SPT), Cone Penetration Test (CPT), and Cyclic Triaxial Test are all commonly used methods for evaluating the liquefaction potential of a soil.

Geotechnical risk assessments are conducted to identify and evaluate potential geotechnical hazards, such as landslides, sinkholes, and soil liquefaction, which helps in developing appropriate mitigation measures to ensure the safety and stability of structures.

Soil compaction, Ground improvement techniques, and Reinforced earth structures are all commonly used methods for improving the bearing capacity of a soil.

Geotechnical investigation reports are prepared to document the findings of the investigation, including the soil properties, subsurface conditions, and geotechnical recommendations, which are crucial for the design and construction of structures.