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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 a government company, with responsibility for operating, maintaining and improving motorways and major A roads in England. It works with the Department for Transport and was previously known as Highways England and Highways Agency.
National Traffic Operations Centre
3 Ridgeway
Quinton Business Park
Birmingham
NHW
UK
Website: https://www.gov.uk/government/organisations/highways-england
Email: info@highwaysengland.co.uk
Tel: 0300 123 5000
