Pryda has responded to the modern trend of an increased number and size of wall openings in new homes by developing a range of narrow wall bracing units that give greater flexibility and increased load capacities than in the past.
Where once lengthy unbroken walls provided plenty of opportunities for supporting economical bracing structures, contemporary lifestyles have seen the ongoing introduction of more doors and windows and larger connected living areas with adjoining alfresco areas. This has meant the virtual disappearance of the traditional lengths of both internal and external walls, thus creating a need to utilise more of the short wall lengths to meet the bracing demand. For two storeyed structures, demand is even greater as all upper level loads need to be transferred through the walls underneath into the ground.
One solution is a steel portal frame or steel truss concealed in the wall; however most builders are reluctant to use these steel components in a timber frame as the connections can be more specialized and usually require a different supplier, which means both accuracy and project delay concerns.
Prydaâ€™s answer to this has been to develop a range of narrow wall units. These units can be fitted into both external and internal walls and sized to suit all contemporary plans with varying height and width requirements.
A decrease in available bracing width or an increase in the bracing strength requirement increases the cost of a bracing unit. For smaller loads the Pryda narrow wall bracing units are very economical using various configurations and numbers of runs of Pryda Strap Brace in conjunction with standard timber framing.
Where the load demand is greater than can be resisted by the above, then timber wall bracing trusses (Pryda Wall Truss Braces) are utilized. Used individually these give far greater load carrying capacity because of their increased rigidity. It is important for these units to be rigidly fixed down to the foundations and the Pryda design allows for this to be easily achieved.
Where the load demand is very high, a pair of these Pryda Wall Truss Braces on either side of an opening could be used in combination with the timber lintel, to resist racking forces by portal action. Simple timber to timber connections give excellent shear and moment fixity, and such configurations are more efficient and effective than a number of individual narrow bracing units.
Designers and builders should consult Prydaâ€™s latest Design Guide on Narrow Wall Bracing Units for more details. The guide is located at /design-guides