Standard Operating Procedures for application of Trenchless in Developing and Maintaining Subsurface Utility Networks under PWD Roads in New Delhi


Table of Contents


Sl. No. Chapters
1 Executive summary of the standard operating procedure manual for trenchless technology
1.1 Introduction
1.2 Executive summary
1.3 Trenchless methods for construction and management of subsurface utilities
1.4 Causes of road settlement / Cave-ins
1.5 Buried Utility Location, Mapping & Data Management
1.6 Selection of appropriate trenchless techniques
1.7 Critical inputs for trenchless projects
1.8 Safe working practices for working near the buried utilities
1.9 Remedial measures for raod surface restoration after project completion
1.10 Remedial measures in case of road settlements / cave-ins after project completion
1.11 Project supervision for trenchless works
1.12 Flow charts
1.13 Standard operating procedures for issuing road cutting permissions and remedial measures for road restoration for trenchless technology operations
   
2 Trenchless methods for construction and management of subsurface utilities
  2.1 Introduction
2.2 Trenchless Technology
2.3 Summary
     
3 Causes for road settlements or cave-ins
3.1 Introduction
3.2 Overview of raod damage risks with trenchless technology
3.3 Risks common to all trenchless installation
3.4 Technique specific risks
3.5 Resultant faliure mechanisms
3.6 Possible road damage for different techniques
3.7 Depth of utility
3.8 Impact of temporary works
3.9 Summary
   
4 Buried utility location, mapping and data management
4.1 Introduction
4.2 Importance
4.3 Types of utility
4.4 Time of location
4.5 Coverage of activities
4.6 Responisbility of location
4.7 Background information
4.8 Liaising assistance
4.9 Investigation procedure
4.10 Data management
4.11 Summary
   
5 Selection of appropriate trenchless technique
5.1 Introduction
5.2 Project faliure
  5.3 Families of trenchless & allied techniques
  5.4 Addressing duty requirements
  5.5 Addressing site constraints
  5.6 Meeting the equipment requirements
  5.7 Meeting installed material requirements
  5.8 Meeting project execution process requirements
  5.9 Trenchless technology selection guidelines
  5.10 Summary
     
6 Critical inputs for trenchless projects
  6.1 Introduction
  6.2 Trenchless attributes
  6.3 Required attributes of executing agency
  6.4 Technology selection
  6.5 Proposed utility route plan
  6.6 Traffic management plan
  6.7 Method statement
  6.8 Thired party inspection
  6.9 Summary
     
7 Safe working practices for working near the buried utilities
  7.1 Introduction
  7.2 Work initiation
  7.3 Excavation
  7.4 Planning and liaison
  7.5 Pre construction activities
  7.6 Utility location
  7.7 Safety information
  7.8 Hazards of striking underground services
  7.9 Operational procedures for accidents
  7.10 Onsite checking
  7.11 Project closeout
  7.12 Summary
     
8 Remedial measures for road surface restoration after project completion
  8.1 Introduction
  8.2 Applicable work standards
  8.3 Defect liability period
  8.4 Immediate works
  8.5 Geosynthetic materials
  8.6 Performance requirements
  8.7 Surface profile
  8.8 Condition at end of guarantee period
  8.9 Fixed features
  8.10 Surface regularity
  8.11 Structural integrity
  8.12 Sampling and testing
  8.13 Excavation
  8.14 Side Support
  8.15 Drainage
  8.16 Shallow or aborted excavations
  8.17 Summary
     
9 Remedial measures in case of raod settlements / cave-ins after project completion
  9.1 Introduction
  9.2 General
  9.3 Repair of cracking
  9.4 Repair of settlement beyond reinstatement limits
  9.5 Repair of other significant defects
  9.6 Improvement of ground behaviour
  9.7 Summary
     
10 Project supervision for trenchless works
  10.1 Introduction
  10.2 General
  10.3 Risk assessment
  10.4 Health and safety procedures
  10.5 Disposal of waste materials
  10.6 Monitoring and record keeping during construction
     
    Table 10.1 - Records to be kept
    Attachment: I Flow chart
    Approval phase
    Execution phase
    Remediation incase of road settlement
    Road surface remediation phase
    Remediation process
    Appendix