Page 8 - Trenchless Technology Piping Installation and Inspection

Contents

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
New Developments . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii
1 New Pipeline Installations . . . . . . . . . . . . . . . . . . . . 1
1.1 Buried Pipe History . . . . . . . . . . . . . . . . . . . . . . 1
1.1.1 The Pipe-Soil Interaction . . . . . . . . . . . 2
1.2 Open-Cut Method of Pipe Installation . . . . . . 3
1.3 Comparison of Construction Operations . . . . 5
1.4 Trenchless Technology Methods . . . . . . . . . . . 5
1.5 Three Main Divisions of Trenchless
Technology Methods . . . . . . . . . . . . . . . . . . . . . 8
1.6 Trenchless Installation Methods . . . . . . . . . . . 9
1.6.1 Conventional Pipe Jacking . . . . . . . . . 9
1.6.2 Utility Tunneling . . . . . . . . . . . . . . . . . 13
1.6.3 Horizontal Earth Boring . . . . . . . . . . . 15
1.7 Characteristics and Applications of
Trenchless Construction Methods . . . . . . . . . . 31
1.8 Capabilities and Limitations of
New Installation Methods . . . . . . . . . . . . . . . . 33
1.8.1 Conventional Pipe Jacking and
Utility Tunneling . . . . . . . . . . . . . . . . . 33
1.8.2 Horizontal Auger Boring . . . . . . . . . . 36
1.8.3 Horizontal Directional Drilling . . . . . 37
1.8.4 Microtunneling . . . . . . . . . . . . . . . . . . . 38
1.8.5 Pilot-Tube Microtunneling . . . . . . . . . 38
1.8.6 Pipe Ramming . . . . . . . . . . . . . . . . . . . 38
1.9 Planning and Safety Considerations . . . . . . . . 39
1.10 Cost Estimating and Bidding . . . . . . . . . . . . . . 43
1.11 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
2 Existing Pipeline Renewal and
Replacement Methods . . . . . . . . . . . . . . . . . . . . . . . . 45
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
2.1.1 Existing Pipe Underperformance . . . 45
2.2 Planning Trenchless Renewal/Replacement
Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
2.2.1 Planning Activities . . . . . . . . . . . . . . . . 48
2.2.2 Design Process . . . . . . . . . . . . . . . . . . . 49

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