Design requirements for permanent soffit formwork (formerly BA 36/90, with IAN 131/11)

DMRB: Highway Structures and Bridges CD 359 Version 0.0.1

National Highways, 2025
Design requirements for permanent soffit formwork (formerly BA 36/90, with IAN 131/11) Download document

Document Status

Current

Supplement

Civil & Structural Supplement

Series

DMRB: Highway Structures and Bridges

Abstract

Provides design requirements for permanent soffit formwork for bridges, including actions during execution.

History

Highway structures and bridges. Design. Supersedes CD 359 Design requirements for permanent soffit formwork (formerly BA 36/90, with IAN 131/11) (HE, 2020). Latest release notes. Version 0.0.1 dated September 2025. General update of document's references related to MCHW re-write. Withdrawal of clause 2.10 (related to PSS formwork) that is now superseded by requirements in the new CC 482. Version 0 dated March 2020.

Subjects

  • Construction site equipment
  • Formwork
  • Civil engineering, infrastructure and public utilities
  • Transport facilities
  • Bridges

Publisher History

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.

Information

NBS

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.

Accuris

We connect trusted knowledge to customers' workflows – mitigating risk, increasing efficiency and accelerating innovation For more than 60 years, leading R&D and engineering-intensive organizations have relied on us to achieve on-time, on-budget delivery of complex projects and new products. We deliver an unparalleled combination of technical content and Artificial Intelligence (AI) technologies to surface answers from the vast universe of technical knowledge, both inside and outside the organization. In a single interface, we connect the dots between information scattered across many different sources, allowing technical professionals to make better, more informed decisions faster.