Road Design
Hydrology Update to the Austroads Guide to Road Design Part 5
- Publication no: AP-R683-23
- ISBN: 978-1-922700-74-2
- Published: 31 March 2023
- PDF (free) Download
This report documents the changes to Section 6 – Hydrology of Austroads Guide to Road Design Part 5: Drainage – General and Hydrology Considerations. Section 6, which covers design related knowledge and guidance on hydrology and hydraulics in road design, required a significant update due to the volume of new work and methodology that has been adopted as part of the recent release of Australian Rainfall and Runoff 2019.
- Summary
- 1. Introduction
- 1.1 Purpose
- 1.2 Methodology
- 2. Summary of Update
- 2.1 Terminology
- 2.2 Catchment Hydrology
- 2.3 Probability and Risk
- 2.4 Data for Drainage Design
- 2.5 Hydrology Methods for Road Drainage and Flood Design
- 2.5.1 Direct Rainfall
- 2.5.2 Rational Method
- 2.5.3 Regional Flood Frequency Estimation (RFFE)
- 2.6 Design Inputs
- 2.6.1 Australian Rainfall and Runoff Data Hub
- 2.6.2 Rainfall Inputs
- 2.7 Design Software
- 2.8 Very Rare and Extreme Events
- 2.9 Specific Design Issues
- 2.9.1 Flood Impact Criteria
- 2.9.2 Flooding for Tunnel Portals
- 2.10 Safety in Design
- 2.11 Climate Change
- 2.11.1 Climate Change
- 2.11.2 Climate Change and Sea Level Rise
- 2.12 Joint Probability
- 2.13 Time of Submergence and Closure
- 2.13.1 Definition of Road Flooding
- 2.13.2 Calculation of Average Annual Time of Closure
- 2.14 Uncertainty
- 2.15 Examples
- References
Related publications
Latest Road Design News