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Drainage for Road Design

Next Course Date



CPD Hours

Member Price 

Non Member Price

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Drainage systems are an important and integral consideration in the planning and design of road infrastructure.

There are a variety of aspects that must be considered to provide an appropriate and economical drainage system on all road projects, irrespective of location, size, cost or complexity. 

This  two-day workshop on drainage based on the Austroads Guide to Road Design Parts 5, 5a & 5b. These guides will provide designers with information to appropriately manage stormwater run-off through the design of efficient and effective road drainage systems.



The course covers all the basic hydrological and hydraulic calculations required for good road design. Although concentrating on road design applications, learning outcomes can be applied to all drainage design projects incorporating small to medium sized catchments. Learning outcomes include:

  • Familiarising road designers and civil engineers with current best practice in road drainage design (based on the Austroads Guide to Road Design Parts 5, 5a & 5b)

  • Outlining application of “Australian Rainfall and Runoff” to road drainage design.

  • Describing how drainage conditions can influence road design, road location, design elements and associated structures.

  • Providing training focused on meeting local requirements with associated case studies.

  • Providing approval authority practitioners with the skills to assess consultant designs and applications.

Participants will need a copy of Guide to Road Design - Parts 5, 5a & 5b. Please print out a hard copy or bring it on your laptop/tablet. This is available as a free downloadable PDF via the Austroads website after logging in.

Who should attend?

The workshop is primarily aimed at, but not limited to:

  • civil engineers involved in road flood and drainage design

  • road design, road safety and traffic management consultants.

  • engineers requiring specialist training or understanding of issues relating to flooding and drainage for road design.

  • state road authority staff who deal in network management, local road solutions, heavy vehicle management, road safety and traffic engineering.

  • graduate engineers looking for specialist skills for career development.

  • practitioners looking to refresh or expand their basic flood and drainage design   knowledge.

  • engineers and designers contributing to other aspects of flood and drainage design, including subdivisions.

Learning Outcomes 

Day 1 will focus on:

  • Road drainage objectives and principles.

  • “Australian Rainfall and Runoff”, Austroads Guide to Road Design and other documentation.

  • Application of “Australian Rainfall and Runoff” to road design.

  • Issues and considerations related to flooding and drainage in road design.

Day 2 will focus on:

  • Site assessment related to flooding and drainage in road design.

  • Scour assessment for bridges and culverts.

  • Culverts.

  • Floodways.

  • Subsurface drainage.

  • Environmental considerations.


Bill Weeks

Dr Bill Weeks is a skilled hydrologist with over forty years’ experience in surface water and groundwater hydrology and hydraulics. He has worked on projects covering water resource assessments, flood studies, irrigation and water supply assessments, bridge and road embankment hydraulic studies and environmental studies.

He has been carrying out a range of consulting activities in his field of expertise since leaving the Department of Transport and Main Roads. He is a co-editor of Australian Rainfall and Runoff.

Mark Babister

Mark has over 30 years of experience in water engineering studies. He takes an active role in the profession being a past Chair of the Water Engineering Panel for the Engineers Australia (Sydney Division) and the National Committee on Water Engineering. He was a member of the Steering and Technical Committees that oversaw the updating of Australian Rainfall & Runoff. Mark is an editor of the new edition of Australian Rainfall and Runoff. He also has considerable experience in hydrologic investigations involving runoff-routing models, flood frequency and joint probability analyses. Mark has particular skills in the area of hydrodynamic modelling and has a thorough understanding of numerical modelling of flow behaviour (both 1D and 2D modelling). Mark is the Project Manager and Editor of Australian Rainfall and Runoff Revision Project 15 (Two dimensional simulations). Mark has been involved in the development of state and national guidance on climate change, flood hazard, acceptable impacts and interaction of floods and tides. Mark has overseen a number of complex hydrology and monte carlo studies.


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