Issue 50 – June 2013
The maximum rating of bracing elements in NZS 3604:2011 Timber-framed buildings for internal walls on concrete slabs is 150 BUs per metre. This typically requires a hold-down fixing at each end of the panel with a 15 kN characteristic strength. Some proprietary fixings may require a slab thickening under the wall to give sufficient concrete depth to insert the fixings into to achieve the required characteristic strength.
Check BRANZ Appraisals (concrete hold-down fasteners) for products that have been appraised. The Appraisal will give the embedment requirements for the kN rating of the fixing.
Summarised from BRANZ Guideline, May 2013.