Demolition is the process of tearing down a building to serve the necessary demands. Demolition of buildings and large infrastructures pose significant economic and environmental concerns to property managers and the general public. Typically, demolition activities yield large volumes of waste and if this is poorly planned and managed, enormous volumes of waste end up at the lower steps in the waste hierarchy.

In some cases one may encounter weak stratum this prompts need for improving the ground if a structure is to be constructed, to make sure that safety of the structure and the stability of adjacent buildings. Improvement of ground can be done using several techniques, in particular granular soils like sandy soil can be improved using different techniques such as; Grouting, Vibro-compaction, Thermal treatment, Pre-compressing, Ground freezing, Soil nailing, Micro- piles and stone columns.