STEEL BUILDINGS IN EUROPE - Multi-Storey Steel Buildings Part 4 - Detailed Design

Oct 24, 2026

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Fourth part of the “Multi-Storey Steel Buildings” European design guide, detailing the design of medium-rise steel braced buildings and concrete core systems for horizontal stability. Defines “simple construction” and treats both global analysis and member-level checks. Provides procedures covering sway/non-sway behavior, second-order effects, and design for serviceability and ultimate limit states in accordance with EN 1993, EN 1994, and robustness requirements using EN 1991-1-7, including worked examples.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages111

Reading Time4 h 40 min

AccessFree to download

FOREWORD

SUMMARY

1 INTRODUCTION

1.1 General

1.2 Scope of this document

2 BASIC CONCEPTS

2.1 Introduction

2.2 Simple construction

2.3 Sway and non-sway frames

2.4 Second order effects

2.5 General design procedure

2.6 Design of steel bracing systems

2.7 The effects of imperfections

2.8 Design summary

3 PRACTICAL GLOBAL ANALYSIS FOR ‘SIMPLE CONSTRUCTION’

3.1 Introduction

3.2 Actions and their combinations

3.3 Analysis for gravity loads

3.4 Allowance for second order effects

3.5 Design Summary

4 SERVICEABILITY LIMIT STATE

4.1 General

4.2 Load combinations

4.3 Horizontal deflection limits

4.4 Vertical deflection limits

4.5 Precambering

4.6 Dynamic response

4.7 Design summary

5 ULTIMATE LIMIT STATE

5.1 Introduction

5.2 Floor systems

5.3 Columns

5.4 Vertical bracing

5.5 Horizontal bracing

5.6 Design summary

6 ROBUSTNESS

6.1 Accidental design situations

6.2 Consequence classes

6.3 Design for localised failure

6.4 Key elements

6.5 Risk assessment

6.6 Design summary

APPENDIX A WORKED EXAMPLES

A.1 Worked Example – Simply supported, laterally unrestrained beam

STEEL BUILDINGS IN EUROPE Multi-Storey Steel Buildings Part 4: Detailed Design Multi-Storey Steel Buildings Part 4: Detailed Design Part 4: Detailed Design Part 4: Detailed Design FOREWORD This publication is part four of the design guide, Multi-Storey Steel Buildings. The 10 parts in the Multi-Storey Steel Buildings guide are: Part 1: Architect’s guide Part 2: Concept design Part 3: Actions Part 4: Detailed design Part 5: Joint design Part 6: Fire Engineering Part 7: Model construction specification Part 8: Description of member resistance calculator Part 9: Description of simple connection resistance calculator Part 10: Guidance to developers of software for the design of composite beams Multi-Storey Steel Buildings is one of two design guides. The second design guide is Single-Storey Steel Buildings. The two design guides have been produced in the framework of the European project“Facilitating the market development for sections in industrial halls and low rise buildings (SECHALO) RFS2-CT-2008-0030”. The design guides have been prepared under the direction of Arcelor Mittal, Peiner Träger and Corus. The technical content has been prepared by CTICM and SCI, collaborating as the Steel Alliance. Part 4: Detailed Design Contents Page No FOREWORD III SUMMARY VI 1 INTRODUCTION 1 1.1 General 1 1.2 Scope of this document 1 2 BASIC CONCEPTS 2 2.1 Introduction 2 2.2 Simple construction 2 2.3 Sway and non-sway frames 3 2.4 Second order effects 4 2.5 General design procedure 7 2.6 Design of steel bracing systems to achieve 􀁄cr 􀁴 10 for all combinations of actions 8 2.7 The effects of imperfections 10 2.8 Design summary 14 3 PRACTICAL GLOBAL ANALYSIS FOR‘SIMPLE CONSTRUCTION’ 15 3.1 Introduction 15 3.2 Actions and their combinations 15 3.3 Analysis for gravity loads 16 3.4 Allowance for second order effects 18 3.5 Design Summary 19 4 SERVICEABILITY LIMIT STATE 20 4.1 General 20 4.2 Load combinations 20 4.3 Horizontal deflection limits 20 4.4 Vertical deflection limits 21 4.5 Precambering 23 4.6 Dynamic response 23 4.7 Design summary 24 5 ULTIMATE LIMIT STATE 25 5.1 Introduction 25 5.2 Floor systems 25 5.3 Columns 37 5.4 Vertical bracing 42 5.5 Horizontal bracing 44 5.6 Design summary 46 6 ROBUSTNESS 47 6.1 Accidental design situations 47 6.2 Consequence classes 48 6.3 Design for the consequences of localised failure in multi-storey buildings 49 6.4 Key elements 53 6.5 Risk assessment 54 6.6 Design summary 54 REFERENCES 55 APPENDIX A WORKED EXAMPLES 56 A.1 Worked Example – Simply supported, laterally unrestrained beam 57 Part 4: Detailed Design A.2 Worked Example – Simply supported beam with intermediate lateral restraints 64 A.3 Worked Example – Simply supported, secondary composite beam 71 A.4 Worked Example – Simply supported, primary composite beam 81 A.5 Worked Example – Pinned column using non-slender H sections 94 A.6 Worked Example – Bolted connection of an angle brace in tension to agusset 98 Part 4: Detailed Design SUMMARY This document is the fourth part of a publication covering all aspects of medium rise multi-storey building design. The guide focuses on the detailed design of buildings that use steel bracing or concrete cores to resist horizontal actions and provide horizontal stability. The objective of this document is to introduce the basic concepts of multi-storey form of construction, commonly referred to as ‘simple construction’ and to provide guidance on practical aspects of building design. It provides detailed guidance on how to design for stability, and goes on to give advice on the global analysis of multi-storey buildings. It also covers the serviceability and ultimate limit state requirements of EN 1993 and EN 1994 and provides guidance on design for robustness to meet the requirements of EN 1991-1-7. It includes six worked examples, covering common element

FAQs

What is “simple construction” in this design guide?

It refers to a construction approach where the medium-rise frame is arranged so that sway stability effects have no significant impact on the floor plan or overall structural form, typically associated with frames where resistance to horizontal loads is not critically dependent on explicit sway stability checks.

Which design stages and limit states are covered in Part 4?

The guide includes guidance for global analysis and provides design checks at the Serviceability Limit State (SLS) and the Ultimate Limit State (ULS), including requirements for floor systems, columns, and vertical and horizontal bracing.

How does the guide address robustness and accidental loading?

It provides robustness design guidance to resist both specified and unspecified accidental loads, including accidental design situations, consequence classes, and risk assessment in line with EN 1991-1-7.

Oct 24, 2026

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