Road Design

Webinar: Changes to Guide to Road Design Part 5 – Improvements to the Regional Flood Frequency Estimation Method
  • Publication no: WEB-AGRD05B-23
  • Published: 2 February 2023

In response to feedback provided by industry and stakeholders, Austroads has reviewed its Guide to Road Design Part 5: Drainage – General and Hydrology Considerations.

The improved guidance responds to the implications for road authority and consulting engineering practices arising from the 2019 update of the Australian Rainfall and Runoff .

This is the second webinar in a two-webinar series, and it covers the improvements made to the Regional Flood Frequency Estimation (RFFE) method.

The following is discussed in the session:

  • Background to the RFFE method
  • Recent improvements to the RFFE method
  • Worked examples
  • Limitations of RFFE and how to assess the quality of the answers produced

The webinar is presented by WMAwater’s Managing Director Mark Babister and William Weeks, currently a private consultant and former Director - Hydraulics and Flooding for the Queensland Department of Transport and Main Roads.

The presentation slides and Q+A can be downloaded from the supporting documents tab after logging in.