Since the development of the synthetic prefabricated vertical drain (PVD) also known as wick drain in the late 1970ties, Cofra is worldwide one of the leading contractors. Cofra has installation rigs available for each soil type, varying from very soft soils to very stiff intermediate layers. Installing worldwide, we encounter depths of 3 to over 60 meter! Our heavy installation sets are the strongest in the world and able to penetrate 25 to 30MPa sands. For working offshore, we have the necessary experience and equipment. Our installation rigs are designed for containerized transport and thus easy to ship to any project location in the world.
Over 60 installation sets
Cofra has over 60 rigs and several excavator sizes available, ranging from small (30 ton) to larger than 90 ton. With this Cofra has always an installation solution available, no matter the size, depth and complexity of a project