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DMRB: Drainage CD 523 Determination of pipe roughness and assessment of sediment deposition to aid pipeline design (formerly HA 219/09). Version 1.1.0
Publication Year
2021
Document Status
Current
Abstract
Provides design criteria for the assessment of highway drainage pipelines, focussing on roughness coefficient and velocity.
Document History
Drainage. Design. Supersedes CD 523 Revision 1 Determination of pipe roughness and assessment of sediment deposition to aid pipeline design (formerly HA 219/09). Revision 1 (HE, 2020). Design manual for roads and bridges. DMRB. Version 0 dated Jun 2019 - replaces HA 219/09. Version 1 dated Mar 2020 - updates references. Version 1.1.0 dated November 2021 - changes made to core document and England NAA.
Publisher Information
National Highways
National Highways is an executive non-departmental public body, sponsored by the Department for Transport. It has responsibility for operating, maintaining and improving motorways and major A roads in England. Formerly known as Highways England, between 2015-2021 and Highways Agency, between 1994-2015.
National Traffic Operations Centre
3 Ridgeway
Quinton Business Park
Birmingham
NHW
UK
Website: https://www.gov.uk/government/organisations/national-highways
Email: info@nationalhighways.co.uk
Tel: 0300 123 5000
