Subsurface investigations or geotechnical site investigations are carried out by experienced geotechnical engineers to acquire geotechnical information to assess the physical properties of the underlying soil and rock at a particular site. The data obtained from subsurface investigations are used to design earthworks and foundations for proposed buildings and infrastructure.
Subsurface investigations can include in situ test data acquisition using in situ testing tools such as Standard Penetrometer Tests (SPT), Peizocone Penetrometer Tests (PCPT), Peizoball Penetrometer Tests (BPT), Field Vane Shear Tests, Dilatometer Test (DMT). Subsurface investigation may also include collection of samples from selected depths at a site for further laboratory testing and analysis.
Epoch has the required data management system and experience for the collection and management of geotechnical data.
In geotechnical engineering, bearing capacity is defined as the ground's ability to support loads. The loads can either be from a permanenet structure such as buildings or a temprorary load such as a crane or a pilling rig. Bearing capacity assessments must be performed by professional and experienced engineers.
Whether there is a building failure or even the appearance of a wide crack on a wall of a building, a geotechnical assessment is highly recommended. Failed or cracked pavements and slope instability also require geotechnical assessments. Geotechnical assessments are used as guides to assess and understand a problem caused by the ground conditions and/or soil behaviour.