ABSTRACT
This is the second in a series of papers addressing practical tunnel lining design.The format for this and future papers is to present a particular topic and support the presentation of the guidelines by the practical application of a case history. The primary intent is to provide guidelines for the geotechnical and structural design of tunnels where the tunnel size and/or ground conditions dictates that systematic support of the excavation is required following each increment of excavation. This method of tunneling is commonly referred to as Sequential Excavation and Support (SES) and is also commonly termed the New Austrian Tunneling Method (NATM).
