Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 

Engineers call for seismic technology in new construction

Media release – for immediate release
August 9 2011

Available, affordable and here. Earthquake engineers call for seismic technology in new construction

Advanced, cost-effective earthquake resistant technology, essential for the rebuilding of Christchurch and all future construction in New Zealand, is already available here says the New Zealand Society for Earthquake Engineering.

NZSEE Executive Officer Win Clark said that base isolation and Precast Seismic Structural Systems (PRESSS) should be considered for all new buildings of up to nine storeys, and other technologies are available for more high-rise construction.

“The base isolation and PRESSS techniques have already been put to the test under extreme conditions in Christchurch,” said Mr Clark. “The Christchurch Women’s Hospital, which is base isolated, and the Southern Cross Endoscopy building, which is built using PRESSS technology, have both performed very well in the recent earthquakes.

“Not only are these technologies effective in mitigating the damage caused by earthquakes, they are also quick to build and cost effective. These should be used, where appropriate, for the construction of all new buildings in New Zealand.

“It is absolutely essential that those responsible for decisions on the rebuilding of Christchurch, central and local politicians and building developers, investors, designers, contractors and the general public countrywide understand how effective these technologies are and that they are already being used in New Zealand.”

Base Isolation, originally developed at Industrial Research at Gracefield, near Wellington, involves the superstructure of the building being separated from the ground by rubber bearings with lead inserts to provide damping of the building’s sway motion.

It is now used worldwide for building protection against earthquakes. As well as the Christchurch Women’s Hospital, buildings constructed using base isolation include the Museum of New Zealand Te Papa and the Wellington Hospital.

PRESSS uses un-bonded post-tensioning to allow controlled rocking of a structure’s joints. This softens the blow of an earthquake, springing the building back to upright without significant structural damage even after a major seismic event.

There are already eight PRESSS buildings in the US and four in New Zealand. The Southern Cross Endoscopy building and the Alan MacDiarmid Building at Victoria University of Wellington were both built using PRESSS precast concrete.

A team led by Professor Andy Buchanan and Associate Professor Stefano Pampanin of the University of Canterbury adapted the PRESSS technology for use with Laminated Veneer Lumber (LVL) using New Zealand grown Pinus Radiata. The Nelson-Marlborough Institute of Technology (NMIT) and the newly-completed Carterton Events Centre in the Wairarapa have been built using this PRESSS timber technology.

“The beauty of PRESSS technology is that it can be used for both precast concrete and timber frame buildings that are quick to build and cost the same, or slightly less, than conventional construction,” said Mr Clark.

“Base isolation is slightly more expensive – around four per cent – to build but life cycle costs are significantly less than conventional construction.”

Mr Clark said that other technologies were required for buildings of ten storeys or more.

“The University of Auckland is carrying out very good research in this area and technology for high-rise buildings, such as the steel frame and slip joint technique, is also already in use in New Zealand,” he said.

“Examples of this include the Te Puni student village at the Victoria University of Wellington. This has used a bolted steel frame with controlled slipping of the beam joint. Under a seismic sway, the bolting of the bottom flange slides relative to the bracket connection to the column.”

The Alan MacDiarmid, Endoscopy building and NMIT building have just been named as award-winners in the Association of Consulting Engineers INNOVATE Awards of Excellence 2011. The Te Puni building was an award winner in 2010.

ENDS

© Scoop Media

 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

Gordon Campbell: On Compensating Afghan Civilian Casualties

Reportedly, there have been nine incidents resulting in 17 civilian deaths and injuries (seven of the dead were children) caused by ordnance left behind on what used to be the firing range of our Provincial Reconstruction Team (PRT) in Bamiyan province.

Given that the NZ Defence Force has needed to be hauled kicking and screaming into belatedly arranging an adequate clean-up of its old firing range… what would it take before New Zealand offers to pay compensation to the families of those who suffered death and injury from what was left behind on our watch? More>>

 

Predator Free: $3.5m For New Pest Controls

New Zealand First is proud to announce the Provincial Growth Fund (PGF) has allocated $3.5 million to develop innovative predator control approaches which will reduce the need for repeated 1080 use. More>>

Children's Day: Commissioner Calls For Govt Commitment

“Three decades on, we are able to celebrate some significant changes for children like the recent launch of a Child and Youth Wellbeing Strategy. But we still have a long way to go to prioritise children’s rights.” More>>

ALSO:

Elections: Proposed Electorate Boundaries Released

The Representation Commission is proposing changes to half of New Zealand’s electorates and establishing a new electorate in south Auckland… More>>

ALSO:

"Effectively A Permanent Amnesty": Final Month For Gun Ban Compensation

The firearms buy-back comes to an end a month from today, but the police say the amnesty for returning banned guns will continue into next year and beyond. More>>

ALSO:


SPECIAL GUNS FOR FOREIGN SECURITY:


MORE ARMED POLICE:

Overseas Investment Rules: New National Interest Test

The Government is delivering on its promise to protect New Zealanders’ interests by applying a new national interest test to the sales of our most sensitive and high risk assets to overseas buyers... More>>

ALSO:

Matter Of Trust: Peters Says NZ First Loans Legal

"Allegations raised this morning by Stuff Limited / Fairfax concern a party matter but I am confident that New Zealand First has operated within electoral laws, now and for the last 27 years." More>>

ALSO:

PGF CONFLICT OF INTEREST:

Gordon Campbell: On Labour’s Age Problem, And The Port Hills

Labour has been steadily improving its gender balance to the point where there are now 21 women in its caucus out of 46 MPs in all... Yet Labour has been just as steadily losing the generational battle to the Greens. More>>

ALSO:

 
 
 
 
 

LATEST HEADLINES

  • PARLIAMENT
  • POLITICS
  • REGIONAL
 
 

InfoPages News Channels