Before a foundation is decided, it is necessary to determine the characteristics of the soil at the site of construction. The investigation of the soil is very necessary for construction activities. It is the natural foundation of every structure or dam that is ever built in the world. Often soil testing is not done before the start of the construction as it is considered a waste of money. The geotechnical investigation also called Soil investigation. The major purpose of soil investigation is to determine the physical properties of soil at a construction site. It helps whether the soil is safe and solid for construction. People do not consider the importance of soil investigation. Our expertise helps to choose appropriate building techniques. They also help in solving problems and gives solutions. Soil investigation is the crucial steps to build a good construction.