AS/NZS 2041:1998
Buried corrugated metal structures
Provides manufacturing requirements, design methods and installation requirements for structures assembled from curved corrugated metal sheet or plates. Structures covered include pipes, pipe-arches, arches and special shapes. Design methods are based on ring compression and buckling failure modes. Information is given on durability. Considerations include handling stiffness, fill requirements and compaction. Tables of maximum and minimum cover are given as a guide to structure selection.
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AS/NZS 2041:1998 BURIED CORRUGATED METAL STRUCTURES
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 NEW MATERIALS AND METHODS
1.3 REFERENCED DOCUMENTS
1.4 DEFINITIONS
1.4.1 Administrative definitions
1.4.2 Technical definitions
1.5 CLASSIFICATION
1.6 NOTATION
1.7 MARKING OF STRUCTURES
SECTION 2 PREFERRED DIMENSIONS
SECTION 3 MATERIALS
3.1 CLASS 1 STRUCTURES
3.1.1 Steel sheet
3.1.2 Steel bolts and nuts
3.1.3 Aluminium sheet
3.1.4 Aluminium bolts and nuts
3.2 CLASS 2 STRUCTURES
3.2.1 Steel plate
3.2.2 Steel bolts and nuts
3.2.3 Aluminium plate
3.2.4 Aluminium bolts and nuts
SECTION 4 FABRICATION
4.1 CLASS 1 STRUCTURES
4.1.1 General
4.1.2 Sinusoidal Corrugations
4.1.3 Sheet tolerances
4.1.4 Bolt holes and slots
4.2 CLASS 2 STRUCTURES
4.2.1 General
4.2.2 Sinusoidal Corrugations
4.2.3 Plate tolerances
4.2.4 Bolt holes
4.2.5 Plate identification and traceability
4.3 ASSESSMENT AND REPAIR OF DAMAGED COATINGS
4.3.1 Zinc
4.3.2 Coatings other than zinc
SECTION 5 DESIGN
5.1 DESIGN PHILOSOPHY
5.1.1 Introduction
5.1.2 Structural failure criteria
5.1.3 Heavy axle load vehicles including construction equipment
5.1.4 Alternative design methods
5.2 DESIGN FACTORS
5.3 MINIMUM COVER
5.3.1 General
5.3.2 Minimum cover for railway live loads
5.3.3 Minimum cover for highway live loads
5.3.4 Variation of minimum cover
5.4 WORKING LOADS
5.4.1 Dead load
5.4.2 Live loads
5.5 DESIGN SOIL COMPACTION AND ARCHING FACTOR
5.5.1 Soil compaction
5.5.2 Soil arching factor
5.6 DESIGN PRESSURE
5.6.1 General
5.6.2 Pipe-arch shapes
5.7 RING COMPRESSION
5.8 SEAM STRENGTH
5.9 ULTIMATE WALL STRESS
5.9.1 Steel
5.9.2 Aluminium
5.10 ALLOWABLE WALL STRESS
5.11 WALL THICKNESS
5.11.1 Final thickness
5.11.2 Structural wall thickness
5.11.3 Durability allowance
5.11.4 Handling and installation stiffness
5.12 RIB STIFFENING
5.13 ARCH FOOTING FORCES
5.14 END-TREATMENT
5.14.1 General
5.14.2 Batter protection
5.14.3 End stiffening ring beams
5.14.4 Headwalls
SECTION 6 INSTALLATION
6.1 GENERAL
6.2 ASSEMBLY
6.2.1 General
6.2.2 Assembly instructions
6.2.3 Bolt torque
6.2.4 Assembled structure tolerances
6.3 METHOD OF INSTALLATION
6.3.1 General
6.3.2 Installation in trench condition
6.3.3 Installation in embankment condition
6.4 MINIMUM SPACING FOR MULTIPLE INSTALLATIONS
6.5 FOUNDATION AND BEDDING
6.5.1 Pipes, pipe-arches and special shapes
6.5.2 Arches
6.6 BACKFILLING
6.6.1 General
6.6.2 Select fill
6.6.3 Modified fill
6.6.4 Placement
6.7 MINIMUM COVER FOR ABNORMAL LOADS
6.8 STRUCTURE SHAPE
APPENDIX A - ORDERING GUIDELINES
A1 GENERAL
A2 INFORMATION TO BE SUPPLIED TO THE MANUFACTURER
A3 INFORMATION TO BE SUPPLIED BY THE MANUFACTURER
APPENDIX B - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
B1 SCOPE
B2 STATISTICAL SAMPLING
B3 PRODUCT CERTIFICATION
B4 SUPPLIER'S QUALITY SYSTEM
B5 OTHER MEANS OF ASSESSMENT
APPENDIX C - DURABILITY DESIGN AND PROTECTIVE SYSTEMS
C1 GENERAL
C2 SERVICE LIFE ASSESSMENT
C2.1 Recommended pH and resistivity of backfill
C2.2 Aggressive backfill conditions
C2.3 Atmospheric corrosion for exposed surfaces
C3 PERFORATION OF METAL
C4 INVERT CONCRETE LINING
C4.1 Abrasion assessment
C4.2 Ponding
C4.3 Trickle flows
APPENDIX D - AS 2041 STRUCTURAL DESIGN FLOW CHART
APPENDIX E - REFERENCE TABLES FOR MINIMUM COVER FOR STEEL STRUCTURES
APPENDIX F - REFERENCE TABLES FOR MINIMUM COVER FOR ALUMINIUM STRUCTURES
APPENDIX G - LIVE LOAD COMPARISON
APPENDIX H - FLOWABLE FILL
H1 GENERAL
H2 MIX PROPORTIONS
H3 MIX FLOWABILITY
H4 GRANULAR MATERIALS GRADING
H5 STRENGTH
H6 PLACEMENT
H7 DURABILITY
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References
ISO metric hexagon nuts, including thin nuts, slotted nuts and castle nuts
Guide for the packing and transport of dangerous goods in transport units
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AS/NZS 2041:1998 BURIED CORRUGATED METAL STRUCTURES
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 NEW MATERIALS AND METHODS
1.3 REFERENCED DOCUMENTS
1.4 DEFINITIONS
1.4.1 Administrative definitions
1.4.2 Technical definitions
1.5 CLASSIFICATION
1.6 NOTATION
1.7 MARKING OF STRUCTURES
SECTION 2 PREFERRED DIMENSIONS
SECTION 3 MATERIALS
3.1 CLASS 1 STRUCTURES
3.1.1 Steel sheet
3.1.2 Steel bolts and nuts
3.1.3 Aluminium sheet
3.1.4 Aluminium bolts and nuts
3.2 CLASS 2 STRUCTURES
3.2.1 Steel plate
3.2.2 Steel bolts and nuts
3.2.3 Aluminium plate
3.2.4 Aluminium bolts and nuts
SECTION 4 FABRICATION
4.1 CLASS 1 STRUCTURES
4.1.1 General
4.1.2 Sinusoidal Corrugations
4.1.3 Sheet tolerances
4.1.4 Bolt holes and slots
4.2 CLASS 2 STRUCTURES
4.2.1 General
4.2.2 Sinusoidal Corrugations
4.2.3 Plate tolerances
4.2.4 Bolt holes
4.2.5 Plate identification and traceability
4.3 ASSESSMENT AND REPAIR OF DAMAGED COATINGS
4.3.1 Zinc
4.3.2 Coatings other than zinc
SECTION 5 DESIGN
5.1 DESIGN PHILOSOPHY
5.1.1 Introduction
5.1.2 Structural failure criteria
5.1.3 Heavy axle load vehicles including construction equipment
5.1.4 Alternative design methods
5.2 DESIGN FACTORS
5.3 MINIMUM COVER
5.3.1 General
5.3.2 Minimum cover for railway live loads
5.3.3 Minimum cover for highway live loads
5.3.4 Variation of minimum cover
5.4 WORKING LOADS
5.4.1 Dead load
5.4.2 Live loads
5.5 DESIGN SOIL COMPACTION AND ARCHING FACTOR
5.5.1 Soil compaction
5.5.2 Soil arching factor
5.6 DESIGN PRESSURE
5.6.1 General
5.6.2 Pipe-arch shapes
5.7 RING COMPRESSION
5.8 SEAM STRENGTH
5.9 ULTIMATE WALL STRESS
5.9.1 Steel
5.9.2 Aluminium
5.10 ALLOWABLE WALL STRESS
5.11 WALL THICKNESS
5.11.1 Final thickness
5.11.2 Structural wall thickness
5.11.3 Durability allowance
5.11.4 Handling and installation stiffness
5.12 RIB STIFFENING
5.13 ARCH FOOTING FORCES
5.14 END-TREATMENT
5.14.1 General
5.14.2 Batter protection
5.14.3 End stiffening ring beams
5.14.4 Headwalls
SECTION 6 INSTALLATION
6.1 GENERAL
6.2 ASSEMBLY
6.2.1 General
6.2.2 Assembly instructions
6.2.3 Bolt torque
6.2.4 Assembled structure tolerances
6.3 METHOD OF INSTALLATION
6.3.1 General
6.3.2 Installation in trench condition
6.3.3 Installation in embankment condition
6.4 MINIMUM SPACING FOR MULTIPLE INSTALLATIONS
6.5 FOUNDATION AND BEDDING
6.5.1 Pipes, pipe-arches and special shapes
6.5.2 Arches
6.6 BACKFILLING
6.6.1 General
6.6.2 Select fill
6.6.3 Modified fill
6.6.4 Placement
6.7 MINIMUM COVER FOR ABNORMAL LOADS
6.8 STRUCTURE SHAPE
APPENDIX A - ORDERING GUIDELINES
A1 GENERAL
A2 INFORMATION TO BE SUPPLIED TO THE MANUFACTURER
A3 INFORMATION TO BE SUPPLIED BY THE MANUFACTURER
APPENDIX B - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
B1 SCOPE
B2 STATISTICAL SAMPLING
B3 PRODUCT CERTIFICATION
B4 SUPPLIER'S QUALITY SYSTEM
B5 OTHER MEANS OF ASSESSMENT
APPENDIX C - DURABILITY DESIGN AND PROTECTIVE SYSTEMS
C1 GENERAL
C2 SERVICE LIFE ASSESSMENT
C2.1 Recommended pH and resistivity of backfill
C2.2 Aggressive backfill conditions
C2.3 Atmospheric corrosion for exposed surfaces
C3 PERFORATION OF METAL
C4 INVERT CONCRETE LINING
C4.1 Abrasion assessment
C4.2 Ponding
C4.3 Trickle flows
APPENDIX D - AS 2041 STRUCTURAL DESIGN FLOW CHART
APPENDIX E - REFERENCE TABLES FOR MINIMUM COVER FOR STEEL STRUCTURES
APPENDIX F - REFERENCE TABLES FOR MINIMUM COVER FOR ALUMINIUM STRUCTURES
APPENDIX G - LIVE LOAD COMPARISON
APPENDIX H - FLOWABLE FILL
H1 GENERAL
H2 MIX PROPORTIONS
H3 MIX FLOWABILITY
H4 GRANULAR MATERIALS GRADING
H5 STRENGTH
H6 PLACEMENT
H7 DURABILITY
AS/NZS 2041:1998
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.