BS EN 1993-1-1:2005/A1 Eurocode 3: Design of steel structures - Part 1-1: General rules and rules for buildings
What are BS EN 1993-1-1 and NA to BS EN 1993-1-1?
The revised BS EN 1993-1-1 applies to the design of steel structures, including both general rules and rules for buildings. It gives basic design rules for steel structures with material thickness ≥3 mm. It also gives additional provisions for the structural design of steel buildings.
The National Annex to BS EN 1993-1-1 contains information on parameters which are left open in the Eurocode for national choice, known as Nationally Determined Parameters (NDP). The NA to BS EN 1993-1-1 includes all the UK's decisions on the permitted NDPs and is applicable to general rules and rules for buildings for steel structures to be constructed in the UK, related to BS EN 1993-1-1.
What is new?
BS EN 1993-1-1 incorporates informative Annex B from BS EN 1090-2 Execution of steel structures and aluminium structures. Technical requirements for steel structures. BS EN 1090-2 introduced the concept of Execution Class as an aid to designers when specifying execution requirements for steel structures. Guidance on the selection of the appropriate Execution Class that had been included in BS EN 1090-2 has now been incorporated as a series of requirements in a new normative Annex C to BS EN 1993-1-1. Some provisions in Annex C are for national determination and hence an amendment to the UK National Annex to BS EN 1993-1-1 is now published that provides the necessary national rules.
Eurocode 3 allows member states to recommend an alternative approach to Table C.1: Choice of execution class (EXC) in their National Annex. The UK's decisions on Table C.1 are included in the NA to BS EN 1993-1-1.
Who should use BS EN 1993-1-1 and NA to BS EN 1993-1-1?
These standards are essential to those in the steel market and any market where steel components are used. It's also used by software systems that produce solutions for the design and construction and operation of infrastructure.
BS EN 1993-1-1 and its National Annex are aimed at:
- Structual engineers
- Civil engineers
- Manufacturers/producers of construction products