Current
Civil & Structural Supplement
DMRB: Pavement
Provides design requirements for constructing new pavements, widening, upgrading or reconstructing existing carriageways on UK motorways and all-purpose trunk roads. Also covers design outputs, use of recycled materials and the pavement design report.
Pavement. Design. Supersedes CD 226 Design for new pavement construction (formerly HD 26/06). Version 0.1.0 (NHW, 2021). Version 0 - dated March 2020 - replaces HD 26/06. Version 0.1.0 - dated November 2021 - changes to core document and England NAA, equation 2.43a corrected. Version 0.2.0 - dated September 2025. Incremental changes to requirements, based on 4 years experience of using CD 226, cyclic review and updates to the MCHW.
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.
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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