Civil & Structural Supplement
Provides design guidance for surface water channels and outlets. Covers: influencing factors, design process, environmental benefits and includes worked examples.
Drainage. Design. Supersedes CD 521 Revision 1 Hydraulic design of road edge surface water channels and outlets (formerly HA 37/17, HA 78/96, HA 113/05, HA 119/06). Revision 1 (HE, 2020). Supersedes CD 521 Drainage. Design. Hydraulic design of road edge surface water channels and outlets (formerly HA 37/17, HA 78/96, HA 113/05, HA 119/06) (HE, 2019) and HA 37/17 Geotechnics and drainage. Drainage. Hydraulic design of road-edge surface water channels (HE, 2017), HA 78/96 Geotechnics and drainage. Drainage. Design of outfalls for surface water channels (HA, 1996), HA 113/05 Geotechnics and drainage. Drainage. Combined channel and pipe system for surface water drainage (HA, 2005), HA 119/06 Geotechnics and drainage. Drainage. Grassed surface water channels for highway runoff (HA, 2006). Design manual for roads and bridges (DMRB). Version 0 dated Aug 2019 - replaces HA 37/17, HA 78/96, HA 113/05, and HA 119/06. Version 1 dated Mar 2020 - updates references. Version 1.1.0 dated November 2021 - changes made to core document.
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.
NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.
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