Subsoil

Soils not showing any remarkable volume changes (soil settlement) after their compaction are classified as good building ground. Due to the lot of possible influencing variables, for building ground there should always exist resp. be furnished a ground expertise by a licensed geotechnical engineer (e.g. geologist). Both, natural and man-made factors have an impact on the stability of the subsoil, as e.g. type and condition of the soil (cohesive/non-cohesive), layers of the earth as well as their thicknesses and courses, overlapping of different types of soil (gravel, clay, rock) and layers, water table, fillings and backfills as well as material and compaction of the same, etc. However, there are possibilities to stabilise the building ground in advance or subsequently. Possible measures are e.g. soil replacement, deep foundations, injections, pinning.