As part of a continuing effort to reduce the cost of tunneling, the Federal Highway Administration (FHWA) and the Urban Mass Transportation Administration (UMTA) sponsored a seminar on the general subject of the benefits which can accrue from the use of instrumentation in the planning, design, construction, and performance of tunnels. The seminar was held in New Orleans, Louisiana, March 24-25, 1980, and was directed towards those decision makers in transportation agencies having prime responsibility for the engineering and construction of tunnels. It was felt that by providing them with a better undestanding of the benefits which can accrue from the use of tunnel instrumentation, its use would be effectively promoted to the benefit of all members of the tunneling community. The official proceedings of the seminar are presented herein. In addition, these proceedings include a bibliography on tunnel instrumentation cross referenced with keywords, and a memorabilia section consisting of photographs taken during the seminar.

The first book on the subject written by a practitioner forpractitioners. Geotechnical Instrumentation for Monitoring FieldPerformance Geotechnical Instrumentation for Monitoring FieldPerformance goes far beyond a mere summary of the technicalliterature and manufacturers’ brochures: it guides readersthrough the entire geotechnical instrumentation process, showingthem when to monitor safety and performance, and how to do it well.This comprehensive guide: * Describes the critical steps of planning monitoring programsusing geotechnical instrumentation, including what benefits can beachieved and how construction specifications should bewritten * Describes and evaluates monitoring methods and recommendsinstruments for monitoring groundwater pressure, deformations,total stress in soil, stress change in rock, temperature, and loadand strain in structural members * Offers detailed practical guidelines on instrument calibrations,installation and maintenance, and on the collection, processing,and interpretation of instrumentation data * Describes the role of geotechnical instrumentation during theconstruction and operation phases of civil engineering projects,including braced excavations, embankments on soft ground,embankment dams, excavated and natural slopes, undergroundexcavations, driving piles, and drilled shafts * Provides guidelines throughout the book on the best practices

Of geotechnical and geophysical -- pr) operies 160 -- 10.3 4 Design of tunnel linings 1 61 -- 10.4 Instrumentation of the CTRL North Downs Tunnel 164 -- 10.5 References 165 -- Appendix I Abbreviations and symbols 166 -- Appendix 2 Risk management 168 -- A2l Introduction 168 -- A2.2 Scope 168 -- A23 Risk register 169 -- A21. 1 When to use the risk register 169 -- A2.32 Whalt is it? 169 -- A2.3.3 Assessment process 169 -- A2.3.4 Key steps 169 -- A2.3.5 Risk assessment, qualitative or -- quantitative? 171 -- A2.3.6 R anaingt risk 175 -- A2.4 References 17.