Other tools NBS offers a range of tools for specification and collaboration National BIM Library The most trusted BIM Library in the UK, certified to the internationally-recognised NBS BIM Object Standard Uniclass 2015 A dynamic and unified classification system for the construction industry covering all sectors Construction Information Service (CIS) A comprehensive online collection of construction related standards, regulations, technical advice and articles Plug-ins NBS provides a range of tools to help connect your CAD model to your specification model
Platform Resources Support Events About TheNBS.com Manufacturers Uniclass 2015 Get in touch

Platform

NBS Chorus Features and pricing Book a demonstration Sign in to NBS Chorus Other tools National BIM Library Uniclass 2015 Construction Information Service (CIS) Plug-ins

Resources

Knowledge Sample Specification Case studies Authors

Support

Training Downloads and updates

About

About NBS Newsroom

Platform

NBS Chorus Features and pricing Book a demonstration Sign in to NBS Chorus Other tools National BIM Library Uniclass 2015 Construction Information Service (CIS) Plug-ins

Resources

Knowledge Sample Specification Case studies Authors

Support

Training Downloads and updates

About

About NBS Newsroom
View all documents from this publisher
Download document

Technical specification for boundary elevations

Publication Year

2025

Document Status

Current

Abstract

Provides a technical specification for the design and construction of fire-resistant boundary elevations in single-storey steel structures, focusing on preventing the spread of fire to neighboring properties. It deals requirements for the primary frame, secondary steelwork, and external wall cladding, emphasizing engineered solutions where fire-resistant cladding is supported by protected structural members. The specification outlines design principles, relevant standards, and the responsibilities of contractors and manufacturers to ensure compliance and effective fire protection.

Document History

Presented in: 1st edition. Published on: February 2025. Came into force: 1 July 2025.

Publisher Information

British Constructional Steelwork Association

The British Constructional Steelwork Association is the national organisation for the constructional steelwork industry. Publications cover technical, commercial, contractual, quality assurance and health & safety matters.