Roof trusses - Bracing

• Introduction
• Lateral restraint for top chords
• Diagonal bracing to stabilise roof planes
• Steelbrace - Fixing
• Diagonal bracing for hip and Dutch gable roofs
• Lateral restraint for bottom chords
• Lateral bracing of web ties

Introduction

Roof trusses, ready to be erected,
craned onto the frame

Roof bracing stabilises the three-dimensional roof structure. It also transfers forces down to the structure below. There are four types of roof truss bracing and these are described in AS 4440. They are:

• lateral restraint to prevent buckling of top chords
• diagonal bracing of top chords to stabilise roof planes
• lateral restraint to prevent buckling of bottom chords
• web ties.