Traditional Methods

With the advent of modern technology traditional methods of tunneling are utilized less and less. However we find that sometimes the “old way” is still sometimes the ‘best way’.

A timber heading is one such method. This type of tunneling utilizes a man-made timber frame to secure the tunnel structure after the material has been excavated. Its distinct advantage is the saving of working space required compared to other tunneling methods. This advantage pays huge rewards in areas of restricted space such as narrow streets.

Once the Timber Heading has been piped, the resultant annulus is usually stowed with concrete and finally topped up with PFA/OPC grout.

Timber Headings can be installed in varying ground conditions, from dewatered sands and gravels or clay to soft/hard rock.