Current
Civil & Structural Supplement
DMRB: Drainage
Provides guidance for designing outfalls and culverts.
Drainage. Design. Supersedes CD 529 Revision 1 Design of outfall and culvert details (formerly HA 107/04). Revision 1 (HE, 2020) and HA 107/04 Geotechnics and drainage. Drainage. Design of outfall and culvert details (HA, 2004). Design manual for roads and bridges (DMRB). Version 0 dated Dec 2019 - replaces HA 107/04. Version 1 dated Mar 2020 - updates references. Version 1.0.1 dated Dec 2021 - changes made to core document.
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.
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