This website presents design data derived in accordance with the following Parts of Eurocode 3 and their National Annexes:
- BS EN 1993-1-1:2005: Design of steel structures. Part 1-1: General rules and rules for buildings.
- BS EN 1993-1-5:2006: Design of steel structures. Part 1-5: Plated structural elements.
- BS EN 1993-1-8:2005: Design of steel structures. Part 1-8: Design of joints.
Where these Parts do not give all the necessary expressions for the evaluation of data, reference is made to other published sources.
The resistances in this website have been calculated using the partial factors for resistance given in the UK National Annexes for the Eurocode (NA to BS EN 1993‑1‑1:2005 AS published in December 2008, NA to BS EN 1993‑1‑5:2006 AS published in May 2008 and NA to BS EN 1993‑1‑8:2005 AS published in November 2008). The partial factors are listed in the EC3 specific explanatory notes, Section 5.1. The other parameters given in the National Annex that have been used when calculating member resistances are given in the relevant section of the EC3 specific explanatory notes within this website. EC3 specific manufacturing tolerances are also included.
The following structural sections are covered:
- Universal beams, universal columns, bearing piles, and parallel flange channels to BS EN 10365
- Structural tees (cut from either universal beams or universal columns) to BS 4-1
- Equal and unequal angles to BS EN 10056-1
- Hot-finished structural hollow sections to BS EN 10210-2
- Cold-formed structural hollow sections to BS EN 10219-2
- Design data according to the BS 5950-1: 2000 standard are also provided, along with explanatory notes and manufacturing tolerances specific to this standard.
In recent years the UK steel construction industry has transitioned from S275 to S355 AS the default grade for hot rolled open sections (i.e. Universal beams, universal columns, bearing piles, parallel flange channels, equal and unequal angles). Whilst open sections in S275 grade can still be rolled to order, they are much less readily available and designers are advised to check their availability before specifying them.
There are no resistance or effective property tables given for hot-finished hollow sections in S275, because hot-finished hollow sections are normally available in S355 only. However hot-finished hollow sections in S420 are included. There are also no resistance or effective property tables given for cold formed hollow sections in S275, because cold formed hollow sections are normally available in S235 and S355 only. No resistance or effective property tables are given for S235 either. This is because although manufactured to BS EN 10219-2: 2006, the available sections are only impact tested to JR, are only issued with a type 2.2 test report rather than type 3.1 test certification and are not CE marked for construction. Therefore these sections are not a structural product.
All design data is generated from the root software functions used to populate Steel building design: Design Data (SCI publication P363) and Steelwork design guide to BS 5950-1: 2000 - Volume 1, Section properties, Member capacities - 7th Edition (SCI publication P202).
This website has been produced by the Steel Construction Institute (SCI) on behalf of Steel for Life and the British Constructional Steelwork Association Limited (BCSA). Although care has been taken to ensure, to the best of our knowledge, that all data and information contained herein are accurate, SCI and the BCSA assume no responsibility for any errors in or misinterpretations of such data and/or information or any loss or damage arising from or related to their use.