RAIL
Tunnel Engineering by Donaldson Associates

Rail tunnels and Donaldson Associates have a long association. Having inspected and designed the remedial works for over 100 live rail tunnels Donaldson Associates have developed a close working relationship with Railtrack and its contractors. Some of the more complex projects have included partial replacement of linings, removal of secondary linings and removing of inverts to increase clearances. New works have included the recent underground projects in London as well as work on the Channel Tunnel Rail Link.