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News Release from: Trussed Rafter Association | Subject: Timber trussed rafters
Edited by the Buildingtalk Editorial
Team on 04 December 2007
Trussed rafters - the long-span solution
of choice
Timber trussed rafters are increasingly becoming the solution of choice for construction of roofs for schools, hospitals, halls, supermarkets and other mid to long-span prestigious buildings.
Timber trussed rafters are increasingly becoming the solution of choice for the construction of roofs for schools, hospitals, halls, supermarkets and a wide range of other mid to long-span prestigious buildings Long-span trussed rafters, for non-domestic roof structures, now represent a third of the total output of the UK trussed rafter industry
This article was originally published on Buildingtalk on 18 May 2006 at 8.00am (UK)
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Having established trussed rafters as reliable and flexible technology in the housebuilding industry, there has been a steady growth in the non-housing sector.
Architects, engineers and building designers, having learned expensive lessons with flat roofs over many years, are now turning to pitched roofs over medium to long-spans.
The increasing use of tiled roofs on these prestigious buildings has encouraged the trend towards trussed rafters.
As this trend develops, trussed rafters are increasingly specified for a wide variety of building types with clear spans of up to 20 metres.
In fact, there are examples in the UK of supermarket roofs with truss-spans of up to 25 metres.
Abroad, even longer spans are not uncommon.
This development in long-span trussed rafters has been made possible for a number of significant reasons: As a result of the dominance of trusses in the housing industry, major investment has been possible in the design and fabrication software and machinery that ensures rapid turnaround, efficient structural design and maximum flexibility.
Trussed rafter manufacturers are able to provide a wide range of design profiles within a single project without major cost implications, thus enabling building designers to be more creative.
Even roof bracing, which is a significant consideration in any roof design, has been simplified for the building designer by the trussed rafter industry.
The Trussed Rafter Association (TRA) has invested in design research in order to establish a set of 'deemed to satisfy' solutions for wind and stability bracing for long-span trussed roofs and these are now available to building designers within the British Standard 5268-3.
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