Trial pits are excavations of ground in order to assess the nature  of the subsurface at a location. They are useful for both environmental and geotechnical investigations. They can be hand or mechanically excavated.

When undertaking trial pitting for environmental purposes it is generally to obtain an idea of the extent of made ground and the geological make up of the natural soils at a site.

When undertaking trial pitting for geotechnical purposes, it is generally in order to assess the nature of the existing foundations serving buildings at the site.

We can also undertake excavations to determine the locations of buried utilities and services.