FTMA is currently working with the Ministry of Business, Innovation and Employment (MBIE) to establish the frame and truss industry’s position on MBIE’s draft guidance document on Manufactured Building Solutions.
We are looking at the implications the proposed content may have for our industry. There are some potential liability changes with regards to changes to both the Building Act and the Consumer Guarantees Act, FTMA is also undertaking a review of Restricted Building Work (RBW) definitions to clarify the status of pre-nailed timber wall frames and manufactured roof trusses.
The FTMA Code of Practice is also being reviewed to ensure it aligns with MBIE’s guidance documents.
Building Standard Review
The major review of NZ Standard 3604 during 2010/ 2011 has provided greater clarity for frame and truss manufacturers around responsibility and reliability. But it has also added new layers of administrative work
The Building standard is key and is considered to be the "bible" on methods and details for the design and construction of timber-framed structures up to three storeys, not requiring specific engineering design.
There have been quite a few changes made to the standard as a result of the review which has impacted on what manufacturers do and how they do it.
One of the most significant changes has been the passing of some responsibility from the frame and truss manufacturer to the Licensed Building Practitioner, with the new legislative regime requiring the designer or architect, on behalf of the builder, to carry out design work.
Other changes included new timber grading requirements, which state which timber grade can be used and where; plus some quite technical changes to step up the engineering performance of timber framed buildings, including guidelines for nailing patterns.
Upcoming reviews of other NZ Standards include NZS3602 and NZS3640. FTMA has recently appointed a representative on the Standards Development Committees that will be reviewing both NZS 3602 and NZS 3640 during the next review period. This appointment has been formally accepted by MBIE.