Road design

Cover of Guide to Road Design Part 5B: Drainage-Open Channels, Culverts and Floodways
Guide to Road Design Part 5B: Drainage-Open Channels, Culverts and Floodways
  • Publication no: AGRD05B-13
  • ISBN: 978-1-925037-03-6
  • Published: 22 May 2013
  • Edition: 1.1

Guide to Road Design Part 5B: Drainage – Open Channels, Culverts and Floodways contains guidance on the design of open channels, culverts and floodways to support the operation and management of the road network.

This Guide needs to be used in conjunction with the other two Parts of the Guide to Road Design that relate to drainage design:

  • Guide to Road Design Part 5: Drainage -  General and Hydrology Considerations
  • Guide to Road Design Part 5A: Drainage - Road Surface, Network, Basins and Subsurface

This Guide provides guidance on the fundamentals of open channel, culvert and floodway flows, and includes methods to undertake the design of these drainage facilities.

The guide includes design processes and formula necessary to design effective drainage systems and infrastructure.  It is supported by appendices containing design charts and worked examples that provide further information.

This guide provides guidelines on good practice in relation to drainage design that will apply in most situations, rather than specifying mandatory practice.

Edition 1.1 updates the Guide format, no text changes were made.