Steel Buildings in Europe

Part 8: Building Envelope 8 - v Contents Page No FOREWORD iii SUMMARY vii 1 INTRODUCTION 1 1.1 The building envelope 1 1.2 The functions of building envelope 3 2 TYPES OF METAL CLADDING SYSTEMS 4 2.1 Single-skin trapezoidal sheeting 4 2.2 Built-up double skin cladding 5 2.3 Insulated (composite or sandwich) panels 8 2.4 Standing seam systems 9 2.5 Structural liner trays 10 2.6 Structural deck and membrane roof systems 10 3 SPECIFICATION OF THE CLADDING 12 3.1 Weathertightness 13 3.2 Building appearance 14 3.3 Thermal performance 15 3.4 Interstitial condensation 18 3.5 Acoustics 18 3.6 Fire performance 20 3.7 Durability 21 3.8 Structural performance 21 4 COLD ROLLED SECONDARY STEELWORK 24 4.1 Purlin and side rail options 24 4.2 Loading 30 4.3 Deflections 31 4.4 Purlin and side rail selection 31 4.5 Restraint provided to the rafters and columns 32 4.6 Restraint of purlins and cladding rails 33 5 HOT-ROLLED SECONDARY STEELWORK 35 REFERENCES 37