Design of steel portal frame buildings to Eurocode 3 (P399)
This publication provides guidance for the elastic and plastic design of portal frames in the UK in accordance with the Eurocodes and their National Annexes P399
Steel portal frames are the most common form of single-storey construction in the UK, usually designed using bespoke software. The design of portal frames was well-covered in BS 5950-1, the guidance in BS EN 1993-1-1 is less detailed and not UK-specific. This publication deals with portal frames with more than one bay, 'hit and miss' frames, plastic analysis and design as well as elastic. It deals with issues which are not covered by BS EN 1993-1-1 on elastic checks on haunches and gives guidance of initial imperfections based on research carried out over the last two years. The publication includes a worked example covering the verification of the primary elements in a portal frame, namely column, rafter and rafter haunch. It is assumed that the reader is familiar with the anatomy of a portal frame.