FWPA Building Innovations

ABUILD Flitches

ABUILD™ Flitches* provide a means of reinforcing timber to increase the span of timber beams. Abuild comprises of a 50 mm x 50 mm x 2.4 mm thick or 3.8 mm or 6.0mm thick steel angles, spot welded on to a standard toothed nail plate extending most or all of the length of the angle. Self install models using “grasshopper teeth” driven in with a hammer on site or pressed in the factory are both available. The steel angles are attached to the top and bottom of a timber beam which substantially boost the flexural strength as well as reducing deflection. The main difference from many previous efforts is that a substantial amount of steel is added to the top and bottom flanges where it is most effective.


A solution which is probably best suited to cost effectively modifying existing structures e.g. the general approach is a relatively common way to rectify a sagging beam.


Structural limitations - shear connection through the nail plate may be an issue in the do-it-yourself version of installation; connection to the steel upper surface is not as easy as timber.


Some potential for uptake in Australia for specific applications such as in high wind areas.




Browse Technology Resources By Category

About FWPA

Forest and Wood Products Australia Limited (FWPA), a not for profit company, is the Australian forestry and wood  products industry’s service provider, investing in research and development, and providing research results and generic promotions to the Australoian industry. FWPA aims to improve the competitiveness and sustainability of the Australian forest and wood products industry through innovation, investment in effective and relevant R&D and communication of the results to stakeholders. Read more about FWPA at www.fwpa.com.au

Contact FWPA

Forest and Wood Products Australia
Level 11, 10-16 Queen Street
Melbourne VIC 3000 Australia

Phone: +61 3 9927 3200
Fax: +61 3 9927 3288
Email: info@fwpa.com.au