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Cover of Guidelines for Design, Construction, Monitoring and Rehabilitation of Buried Corrugated Metal Structures
Guidelines for Design, Construction, Monitoring and Rehabilitation of Buried Corrugated Metal Structures
  • Publication no: AP-T196-11
  • ISBN: 978-1-921991-10-3
  • Published: 23 December 2011

These guidelines provide essential information regarding Buried corrugated metal structures (BCMS) from the design process, installation, in-service monitoring, through to maintenance and repair procedures. BCMS have been used in Australia as an attractive solution to under road drainage requirements due to the low cost and fast construction times achievable. Several incidents of significant failures of BCMS, however, have been reported in current practice. In most observed failures, corrosion has been a critical issue which resulted in subsequent maintenance, rehabilitation and replacement. In addition, thinner sections have been introduced to the Australian market and included in Australian Standards, potentially increasing future problems with premature corrosion and deterioration.

  • Guidelines for Design, Construction, Monitoring and Rehabilitation of Buried Corrugated Metal Structures
  • Guidelines for Design, Construction, Monitoring and Rehabilitation of Buried Corrugated Metal Structures
  • 1. INTRODUCTION
    • 1.1. Background
    • 1.2. Aims
    • 1.3. Scope
    • 1.4. Outline
  • 2. DESIGN OF BCMS
    • 2.1. Behaviour of BCMS
    • 2.2. Failure Mechanisms
      • 2.2.1. Corrosion and Abrasion
      • 2.2.2. Strength-related Failures
      • 2.2.3. Construction Failures
    • 2.3. Overall Design Methodology
      • 2.3.1. Overall Design Process
    • 2.4. Preliminary Assessment
      • 2.4.1. Consideration of BCMS as Appropriate Culvert Type
      • 2.4.2. Structure Classification (Importance level) – Intended Use (Design Working Life)
      • 2.4.3. BCMS Configuration and Application
      • 2.4.4. BCMS Fabrication and Material Types
      • 2.4.5. Site Investigation
    • 2.5. Structural Analysis Approaches
      • 2.5.1. Design Loads
      • 2.5.2. Ring Compression Method
      • 2.5.3. Limit State Method
      • 2.5.4. FE Analysis Method
      • 2.5.5. Design Method Selection
    • 2.6. Design for Durability
      • 2.6.1. Material Selection
      • 2.6.2. Corrosion Allowance Methods for Durability Design
      • 2.6.3. Site Investigations/Tests
    • 2.7. Detailing
      • 2.7.1. Footings
      • 2.7.2. Longitudinal Stiffeners
      • 2.7.3. End Treatments
      • 2.7.4. Invert Lining
      • 2.7.5. Spacing
      • 2.7.6. Cover
      • 2.7.7. Location and Alignment Considerations
  • 3. CONSTRUCTION GUIDELINES
    • 3.1. Material Handling
      • 3.1.1. Material Delivery
      • 3.1.2. Handling Damage
    • 3.2. Site Preparation
      • 3.2.1. Installation Type
      • 3.2.2. Grade
      • 3.2.3. Camber
      • 3.2.4. Foundation Requirements
      • 3.2.5. Bedding
    • 3.3. Pipe Assembly
      • 3.3.1. Assembly Instructions
      • 3.3.2. Shape Tolerances
    • 3.4. Backfilling Specifications
      • 3.4.1. Material Selection
      • 3.4.2. Compaction Process and Equipment
    • 3.5. Construction Loads
  • 4. STRUCTURAL MANAGEMENT AND INSPECTION OF BCMS
    • 4.1. Structure Management Planning
    • 4.2. Workplace Health and Safety
    • 4.3. Level 2 Structural Inspections: Defect Identification
    • 4.4. Level 2 Structural Inspections: Condition States
    • 4.5. Level 3 Structural Inspections: Information Collection
      • 4.5.1. Type of BCMS
      • 4.5.2. Size and Shape
      • 4.5.3. Corrugations – Pitch and Depth
      • 4.5.4. Height of Fill Material
      • 4.5.5. Material Thickness
      • 4.5.6. Maximum Outside Diameter
      • 4.5.7. Voids Present in Fill
      • 4.5.8. Estimated Maximum Sag in Pipe due to Settlement
      • 4.5.9. Waterway Description
      • 4.5.10. Environmental Conditions
      • 4.5.11. Water/Soil Samples
      • 4.5.12. Other Defects and Cause (Construction/In-service)
      • 4.5.13. Sketches
    • 4.6. Risk Assessment Method and Treatment Action
      • 4.6.1. Situation 1
      • 4.6.2. Situation 2
      • 4.6.3. Situation 3
      • 4.6.4. Situation 4
      • 4.6.5. Situation 5
      • 4.6.6. Situation 6
      • 4.6.7. Situation 7
  • 5. MAINTENANCE AND REPAIR PROCEDURES
    • 5.1. Emergency Propping
    • 5.2. Repair Methods
      • 5.2.1. Repair and Maintenance Methods
      • 5.2.2. Concrete Lining of Invert
      • 5.2.3. Painting the Invert
      • 5.2.4. Joint Repairs
      • 5.2.5. Replacement of the Culvert
      • 5.2.6. Shotcrete Lining
      • 5.2.7. Slip Lining
      • 5.2.8. Pipe Jacking Around the Existing Culvert
      • 5.2.9. Filling the Culvert
  • 6. CONCLUSIONS
    • 6.1. Future Directions
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