Steel Buildings in Europe

Part 4: Detailed Design of Portal Frames 4 - vii SUMMARY This publication provides guidance on the detailed design of portal frames to the Eurocodes. An introductory section reviews the advantages of portal frame construction and clarifies that the scope of this publication is limited to portal frames without ties between eaves. Most of the guidance is related to single span frames, with limited guidance for multi-span frames. The publication provides guidance on:  The importance of second order effects in portal frames  The use of elastic and plastic analysis  Design at the Ultimate and Serviceability Limit States  Element design: cross-section resistance and member stability  Secondary structure: gable columns, bracing and eaves members. The document includes a worked example, demonstrating the assessment of sensitivity to second order effects, and the verification of the primary members.