Dynamic Compaction

Dynamic compaction is a ground improvement technique that is used for in-situ densification of granular soils and fill materials, utilising a crane hoisted drop weight.

The ground is subjected to repeated surface tamping using a heavy steel weight, falling in a pre-determined grid pattern to improve density of loose, granular soils and fills.

The treatment pattern, energy level, number of passes and phasing of passes must be designed to take into account the soil conditions, type of development, required bearing capacity and settlement characteristics.

It is essential to have a thorough geotechnical understanding of the soils prior to treatment, and very close control must be maintained during all phases of the work.

Common Applications

  • Increasing ground bearing capacity
  • Decreasing soil settlement
  • Mitigation of liquefaction