An in-ground mass is a classic foundation that is constructed in the ground. These fixed, non-vibratory foundations are generally used for applications with largely static or quasi-static loadings. They are designed for only very low dynamics and low-frequency excitations.
Very heavy in-ground masses require additional pile foundations. The walls of the foundation pit are faced with XPS boards before the concrete works in order to decouple the foundation from the surrounding buildings. The concrete body of an in-ground mass can be equipped like a seismic mass – for example with clamping plates or base plates.