Weeks 9-11 Flashcards
When was the NZ Ministry of Works and Development founded?
1876
When was the NZ ministry of Works and Development disestablished and privatised?
1988 - though a Residual Management Unit continued to oversee the Ministry’s operations and asset until formally ending in 1993 via the Ministry of Works and Development Abolition Act 1988
What were the disadvantages of the highly regulated apprenticeship system?
It lacked flexibility which meant the it was difficult to enter into the tripartite structure (of union, employer and Government) and it also lacked responsiveness to employer needs.
In the late 1980’s, NZ was also forced to move from a protected economy to an open economy.
What trends occurred to the buildings from 1988-2010’s?
There was an increase of adaptations of height risk designs that were unsuited to NZ conditions. I.e. the Mediterranean style monolithic texture.
There was also occurrences of poor construction practices
Leaky buildings where moisture was getting into the wall framing of our houses through cracks in the building envelope which seeped further into the building structure.
What are issues associated with the High risk designs that took place from 1988 - 2010’s?
Flat roofs.
Flat balustrade top and parapets.
Lack of eaves.
Decks over living areas (known as floating decks.).
Penetration points with high risk detailing i.e. Pergolas and Handrails
Inadequate provision for dealing with water and building movement
Design lacking details rely on replication of manufacturers technical literature (which may not have been suitable for individual applications.)
Why was there an increase in poor construction practises from 1988 - 2010s and in what way?
There was a lot of pressure to build quickly to minimise costs.
In turn there were increased use of unskilled labour in critical tasks with inappropriate guidance and supervision as well as non compliance with Manufacturer’s technical literature. There was also use of unsuitable building products such as the reliance on sealants for weatherproofing.
What are 5 changes of circumstances that took place which contributed to the development of leaky buildings?
1 - The Building Act 1991 which came into law in 1993 - this changed building controls from a prescriptive system to a performance-based system. Lack of verification led to lack of safeguarding.
2 - Lack of detailed drawings - change of trends caused architects and designers to move toward uncharted territory. More complex roof shapes, Mediterranean style design including cladding. Adopting eave-less design.
3- Lack of training
4 - Lack of older (50-60 year old) timber. This meant lower durability of the first rotation pine that decayed rapidly when exposed to moisture.
5 - Lack of research to allow for quality construction using new materials and systems as well as concurrently trying to satisfy new NZBC performance requirements.
What was the result of leaky homes, which included 209 schools and Ronald McDonald houses in Wellington?
Due to not complying with the NZBC, when the envelop leaks, this caused rot, corrosion, mould and dampness in the building structure which lead to structural failure.
What was the total cost of 22000 to 89000 houses being affected by leaky homes syndrome?
$11.3 billion. (Others reported the bill to be as much as $29 billion)
How was the repair bill split (Using the Leaky Homes Financial Assistance Package)
25% Government
25% Council
50% Homeowner
How did the Government respond to the issues arising from a decade of leaky homes? (7 points)
1 - Update NZS 3602 in 2003 and E2/AS1 (3rd edition) in 2004
2 - Replace the Building Act in 2004 (amended in 2007 to introduce LBP scheme) and repeal Building Act 1991
3 - Dissolve the BIA (Building Industry Authority) and replace with DBH (Department of Building and Housing) in 2004, subsequently replaced again by MBIE (Ministry of Business, Innovation and Employment) in 2012.
4 - Establish Weathertight Homes Resolution Services Act in 2006 and then Regulations in 2007.
5 - Establish LBP Rules in 2007
6 - Establish the CodeMark Certification Scheme in 2009
7 - Update NZS 3604 in 2011 (replacing 1999)
What were 6 issues identified in the report?
1 - A lack of essential detailing and installation practises at crucial joints and junctions.
2 - Installers not keeping up with updated installation instructions form manufacturers i.e. changing of nailing patterns for the fixing of bracing sheets.
3 - Critical flashing being omitted for aesthetic reasons
4 - Materials and products being accepted as fit-for-purpose when they have not been tested for that situation.
5 - Councils approving a product shown on the site documents when they have not been actually been approved.
6 - The use of new materials i.e. a prime example would be the allowance to use untreated pine for structural framework of a house in 1996.
Memorise the Hunn Report 2002.
Photos
As a result of the Hunn Report 2002 what were the two main recommendations?
1 - Weather-tightness Recommendations
2 - Building Sector Recommendations (Origins of LBP) Advocating National Register for builders and trades as well as trade regulations, education and registration.
What were the 5 main goals of the LBP regime?
1 - A more efficient and productive sector that stands behind the quality of work.
2 - A sector with the necessary skills and capability to build things right.
3 - A sector that delivers good-quality affordable homes and buildings that is a positive contribution to the economy.
4 - A well-formed sector that shares information and quickly identifies and correct problems.
5 - A sector where everyone involved in building work knows what they are accountable for.
What do the following facets of the construction industry contribute in term of accountability which in tern help the government make regulations more efficient?
Building Act
Builders and Designers
Building Owners
Building Consent Authority
Building Act - Makes it clear responsibility is with those doings the work.
Builders and Designers - Must make sure their work meets building code requirements
Building Owners - Must make sure they get the necessary approvals and are accountable for their decisions such as substituting specified products
Building Consent Authority - Accountable for checking the plans meet BC requirement and inspection to make sure plans are followed.
What is RBW?
Restricted Building Work - work that is critical to make a home structurally sound and weather tight.
It covers residential design, construction or alteration work that requires a Building Consent. It also involves the homes primary structure, weather tightness, and certain fire safety design.
What type of workers are required for Restricted Building Work?
LBPs - not all building practitioners are licensed.
What do the rules about restricted building work do for us as tradespeople and owners?
They are part of the councils role in consenting and inspecting building work.
This protects you and future owners by creating a record of who did what on your home and how it meets the Building Code.
What must a LBP provide provide on a home that they perform RBW on?
Certificate of Design Work or Record of Building Work.
What are the 7 licence classes of LBPs?
Design
Carpentry
Roofing
External Plastering
Bricklaying or Blocklaying
Foundations
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