Dando Duplex Drive (3D) System

The Dando Multitec 4000, along with other rigs in the Dando range, is now available with the new Dando 3D geotechnical sampling and testing system.

The specially designed automatic trip hammer is used to take soft ground undisturbed samples with the Dando Duplex Drive (3D) system which advances the casing at the same time as taking a sample.

Fitted with the standard 63.5kg drop weight, the hammer is also capable of SPT (Standard Penetration Testing.) The unique design of the assembly means no additional load is applied to the SPT tooling thus ensuring the best results possible.