ABSTRACT
Soil investigation ~ before a decision is made as to the type of foundation that should be used on any particular site, a soil investigation should be carried out to establish existing ground conditions and soil properties. The methods, which can be employed together with other sources of information such as local knowledge, Ordnance Survey and geological maps, mining records and aerial photography, should be familiar to students at this level. If such an investigation reveals a naturally poor subsoil or extensive filling, the designer has several options.
