Trada Roof Trusses

Trussed rafters are individually designed prefabricated structural components made from strength graded timber members of the same thickness joined together with punched metal plate connectors.

Trada roof trusses.

There are many different types of roof trusses. Trada truss roof it is found that in these truss roofs that the most common being a fink truss equal pitch on either side that the individual members are fixed at meeting points by a gang nail plate a plate with punched though sections creating pointed protruding pieces of metal which secures the plate to the timber on either side. The trusses supported purlins and binders which in turn supported rafters and ceiling joists. Roof beam timber roof roof trusses lvl beam roof truss design wood truss cool deck wood design steel frame.

Trada the timber research and development association is an international membership organisation dedicated to inspiring and informing best practice design specification and use of wood in the built environment and related fields. Trussed rafters must be braced to create a rigid and stable roof structure. The tda trusses were built on site using toothed plate connectors and were based on standard designs that were published by the timber development association tda the forerunner of the timber research and development association trada. Currently the highly engineered and slender trussed rafter where the rafters and ceiling joists are triangulated to form a lightweight prefabricated truss is the most widely used form of domestic roof construction.

Trussed rafter roofs also known as roof trusses provide a structural framework to support the roof fabric ceilings or floors of buildings in both domestic and commercial structures. Available as a proprietary product from various suppliers trussed rafter components are manufactured to design code standards. Following the second world war various forms of prefabricated truss were developed with the intermediate rafters and purlins cut and fitted on site. We are dedicated to inspiring and informing best practice timber design timber specification and use of wood in the built environment and related fields.

The most common pattern is the fink or w truss designed for symmetrical double pitch roofs although there are a variety of shapes suitable for most roof designs. They have been popular since the 1960s. 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. The tda trusses were site built using toothed plate connectors based on standard designs published by the timber development association tda the forerunner of trada.