Standard
CD 521 - Hydraulic design of road edge surface water channels and outlets
This document gives requirements and guidance for the design of road edge surface water channels and outlets, combined channel and pipe systems for surface water drainage, and grassed surface water channels on motorways and all-purpose trunk roads.
Document details
- Link to document on publisher's website
- CD 521 - Hydraulic design of road edge surface water channels and outlets from National Highways
- Document type
- Standard
- Date published
- August 2019
- Last updated
- November 2021
- Published by
- National Highways
Related content on legislation.gov.uk
Regulatory topics
- Surface water channel systems
- Water outlets
- Road edge