CONTENTS

 1     Scope
 2     Available techniques
 3     Kinds of work
        3.1     Long sections
        3.2     Crossings
        3.3     Urban environment
 4     Site investigation
 5     Preparatory steps
        5.1     Use of trenchless techniques not requiring the excavation of a launch pit
        5.2     Use of trenchless techniques that require the excavation of a launch pit
                  5.2.1     Impact moling
                  5.2.2     Pipe ramming
                  5.2.3     Microtunnelling and pipejacking
 6     Drilling operations
        6.1     Guided boring/directional drilling
                  6.1.1     Pilot bore creation
                  6.1.2     Reaming and pullback
                  6.1.3     Duct inspection
        6.2     Impact moling
        6.3     Pipe ramming
        6.4     Pipejacking and microtunnelling
 7     Record keeping and documentation
 8     Ground conditions
        8.1     Guided boring/directional drilling
        8.2     Impact moling
        8.3     Pipe ramming
        8.4     Pipejacking and microtunnelling
 9     Applications
        9.1     Guided boring/directional drilling
        9.2     Impact moling
        9.3     Pipe ramming
        9.4     Pipejacking and microtunnelling
10     Conclusion
11     Glossary
Appendix I – Available techniques
        I.1     Guided boring and directional drilling
                  I.1.1     Methods
                  I.1.2     Drilling machines
                  I.1.3     Drill pipes
                  I.1.4     Drilling fluids
                  I.1.5     Tracking and guidance systems
                  I.1.6     Ancillary equipment
        I.2     Impact moling
                  I.2.1     Monitoring
                  I.2.2     Head types
        I.3     Pipe ramming
                  I.3.1     Set-up
                  I.3.2     Bore options
        I.4     Pipejacking and microtunnelling
                  I.4.1     Planning
                  I.4.2     Excavation and spoil removal in pipejacking
                  I.4.3     Excavation and spoil removal in microtunnelling
                  I.4.4     Microtunnelling work method classification
                  I.4.5     Position detecting methods
                  I.4.6     Soil improvement methods
                  I.4.7     Jacking frames
                  I.4.8     Shafts
                  I.4.9     Pipes
                 I.4.10     Lubrication
                 I.4.11     Interjacks
                 I.4.12     Jacking loads