Author: The Institution of Structural Engineers
29 May 2014
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The Institution of Structural Engineers
Portal frames can be made from concrete, timber and even glass but the vast majority, in the UK certainly, are constructed from steel. This Technical Guidance Note gives an introduction to steel portal frames and their preliminary analysis. Steel portal frames usually have pinned bases and moment connections at the column/rafter interface and mid-span apex splice in the rafter. Although there are other forms of portal frame (described in Elastic Design of Single- Span Steel Portal Frame Buildings to Eurocode 3), for the sake of brevity and clarity this note will be dedicated to this particular form.
(This article was updated in October 2016 to reflect errata issued since its original publication.)
The subject of this guide is the design of columns in simple construction to BS EN 1993-1-1 – Eurocode 3: Design of Steel Structures – Part 1-1: General Rules for Buildings. It covers rolled steel ‘I’ and ‘H’ sections that are acting as columns within a braced steel frame structure.
This Technical Guidance Note explains how reinforced concrete walls are designed to withstand high in-plane bending forces, in accordance with Eurocode 2.
The subject of this guide is the design of one way spanning concrete slabs to BS EN 1992-1-1 – Eurocode 2: Design of Concrete Structures – Part 1-1: General Rules for Buildings. The design of such elements is very simple to carry out and thus acts as a good introduction to the concept of reinforced concrete.