Before any further examination of an existing slope, or the ground onto which a slope is to be built, essential borehole information must be obtained. This information will give details of the strata, moisture content and the standing water level. Also, the presence of any particular plastic layer along which shear could more easily take place, will be noted.
Piezometer tubes are installed into the ground to measure changes in water level over a period of time.
Ground investigations also include:-