BUILDING FOUNDATION INVESTIGATION By Falae Philips Omowumi The foundation is the building system component that interfaces the building structure with the ground. It provides the proper support to keep the structure from settling differentially (which would tear the building apart) and hopefully from settling at all. Foundations are designed with the soil conditions in mind. Definition “The foundation is the lowest part of a building. It transmits the load of the structure to the soil below”. Soil mechanics site investigations are conducted to discover the characteristics of the soil at the particular location. In the recent time, many methods have been employed to investigate subsoil on which foundation is to be laid. These methods include geotechnical methods (SPT, CPT, DCPT etc) trier pits for sample analysis, Geophysical method (Electrical method, magnetic, seismic etc). The design of foundation is basically based on the result of the report from the investigation carried