Design of Buried Pipelines - An Advanced Approach

By the end of this course, you will be able to:

• Assess the design requirements and performance limitations of buried pipeline systems under varying soil, load, and environmental conditions.
• Calculate external loads on buried, tunnelled, rigid, and flexible pipes, including live loads, frost loads, flotation, subsidence, temperature effects, and seismic forces.
• Apply AWWA and ASTM design guidance to the analysis and design of rigid, semi-flexible, and flexible pipeline materials.
• Evaluate soil-pipe interaction and select appropriate design methods for concrete, clay, steel, ductile iron, PVC, PE, HDPE, and other pipe systems.
• Develop practical design responses to common pipeline performance issues, including longitudinal fractures, minimum cover, soil bearing, and structural durability.

Description

Buried pipelines are expected to perform reliably under complex and often changing ground conditions. Whether used for water distribution, drainage, sewer systems, utility conduits, or other subsurface infrastructure, these systems must be designed to withstand soil movement, surface loading, temperature variation, seismic effects, flotation, frost, and long-term material behaviour.

When pipeline design does not adequately account for these conditions, the consequences can include premature deterioration, service disruptions, structural failure, costly repairs, and disputes over responsibility. Effective design requires more than selecting a pipe material; it requires a clear understanding of how loads are transferred, how different materials respond, and how soil-pipe interaction affects system performance over time.

This course provides a structured review of advanced buried pipeline design, with emphasis on load calculation, material-specific design methods, and the practical application of AWWA and ASTM guidance. You will work through the design considerations for rigid, semi-flexible, and flexible pipelines, including concrete, vitrified clay, steel, ductile iron, PVC, PE, HDPE, and thermoset plastic systems, and examine how these principles apply to real infrastructure design challenges.

Who Should Attend

This course is designed for:

• Civil, geotechnical, municipal, structural, and utility engineers involved in buried pipeline systems
• Pipeline engineers, consulting engineers, and engineering technologists responsible for design, review, or analysis
• Construction managers, contractors, fabricators, and manufacturers working with buried pipe materials or installation methods
• Municipal and city infrastructure professionals involved in planning, procurement, maintenance, or asset management
• Project managers, environmental engineers, urban planners, and infrastructure consultants working on subsurface utility or pipeline projects
• Professionals who have completed EPIC’s Buried Pipeline Design course or who already have foundational knowledge of loads on buried pipelines

Day I

Introduction

• Application of buried pipes
• Common pipe materials and characteristics

Loads on Buried Pipelines

• Loads on buried, tunnelled, and flexible pipes
• Effect of pipe axial bending
• Live wheel loads
• Minimum soil cover
• Pipe flotation
• Longitudinal fractures
• Effect of soil subsidence, temperature rise, seismic loads
• Frost loads
• Soil bearing

Design of Rigid Pipelines

• Vitrified Clay Pipes
• Concrete Pipes
• Pre-stressed Concrete Cylinder Pipe:
• Reinforced Concrete Cylinder Pipe:
• Pre-tensioned Concrete Cylinder Pipe:
• AWWA Design of Reinforced Concrete Pressure Pipes
• Design Procedure for Rigid Pipes (AWWA C300 & C302):
• Design Procedure for AWWA C303-type Pipes
• Indirect Design Method
• Three-Edge Bearing Design Criteria
• Direct Design Method
• Soil-Pipe Interaction Design and Analysis

Day II

Steel and Ductile Iron Flexible Pipes

• Corrugated steel pipes
• Steel pipes
• Ductile iron pipes
• Pressurized ductile iron pipes

Plastic Flexible Pipes

• Types of Thermoplastic Pipes
• PVC pipes
• Polyethylene (PE) Pipes
• HDPE Profile-wall Pipes
• Experimental observations
• HDPE Pipes with Steel Rib
• Steel Mesh Reinforced HDPE pipe
• Acrylonitrile-Butadiene-Styrene Pipes
• Thermoset Plastic Pipes

Questions and Answers and Feedback to Participants on Achievement of Learning Outcomes