Trussed Rafter Roof Bracing

Applicable to all trussed rafter roofs unless rigid sarking such as timber boarding or plywood is used.

Trussed rafter roof bracing.

Trussed rafters must be braced to create a rigid and stable roof structure. If the bracing is omitted wrongly positioned or badly fixed it may result in distortion or failure of individual trusses or in some instances the whole roof. I at least four rafter diagonal braces are fixed to the underside of the rafter members e bracing crosses as in the narrow fronted roof a splice plate should be used. Why brace trussed rafter roofs.

Partition loads for eurocode design member download login the effect of sinking supports on masonry walls member download login. Bracing for roofs that are approximately square. Longitudinal bracing or binders longitudinal bracing assists in restraining the trussed rafters and holding them in their correct position particularly during tiling and fixing of plasterboard. Trussed rafter roof bracing systems are designed to provide adequate stability to the entire roof structure and it is recognised that providing the straps are located at suitable positions and centres to accommodate the requirements for wall restraint the longitudinal bracing members generally comprising 25mm x100mm sawn timber together with their fixings to the trussed rafters should be adequate to transfer the forces from the restraint straps to the roof construction.

The trussed rafter association publishes a wide range of roof construction technical advice and product information on trussed rafters and metal web joists. Some is restricted to. Least two trussed rafters and nailed as g above. Bracing responsibility the building designer and not the trussed rafter supplier is.

Of trussed rafter roofs the brace will be equally effective if placedon either diagonal. Diagonal rafter bracing should be approximately 45 to the rafters on plan. Bracing for larger roofs. Some of this information is available free of charge to all specifiers designers contractors builders manufacturers and other construction industry professionals.

Bracing for roofs less than 6 6m wide on detached or staggered stepped buildings. If the bracing is omitted wrongly positioned or badly fixed it may result in distortion or failure of individual trusses or in some instances the whole roof. Trussed rafters must be braced to create a rigid and stable roof structure. J longitudinal bracing members should extend over the whole length of the roof and.