Asbestos halts BNZ House demolition

MICHAEL WRIGHT
Last updated 13:33 30/08/2012
BNZ House

HALTED: Demolition work on BNZ House in Cathedral Square has stopped after traces of asbestos were found.

Relevant offers

Christchurch Earthquake 2011

Damage causes Christchurch house to rot as owners battle insurers Homeowners expect fight for quake repair reviews after settlement expands EQC's liability 'hugely' EQC agreement with EQC Action Group has major implications Receivers sue insurers of fraudster Ken Anderson's former LWR buildings Earthquake Commission yet to offer Crown payout for red zoned land EQC to re-repair home following apology to Christchurch family Red zoning decision 'separate' to EQC's settlement offers EQC's $1115 land settlement for red zoners 'doesn't add up' Southern Ink property manager Christopher Chapman charged with misconduct over earthquake death Kiwi engineer awarded for Christchurch liquefaction research

Asbestos has halted the demolition of an earthquake-damaged office building in central Christchurch.

Work bringing down BNZ House in Cathedral Square started in December but stopped a month ago when traces of the noxious building material were found.

Engineers found the substance encased in some of the building's concrete columns and isolated them while tests were done elsewhere.

The results were clear, but work has yet to resume as the discovery has forced a change in the demolition method.

BNZ House is a ''high-reach'' job, where massive excavators, sometimes known as ''nibblers'', eat away the building, as was done on the Christ Church Cathedral tower.

It will become a ''cut-and-crane'' job - where large sections of concrete are cut up and removed intact, similar to the Clarendon Tower demolition in Oxford Tce - once the process is designed and approved.

''Those specific columns will have to be cut and craned out to keep them encased and safe for easy disposal,'' a Canterbury Earthquake Recovery Authority spokeswoman said.

Hawkins is the project manager on BNZ House, and March McGee the demolition contractor.

Work is scheduled to finish in December.

The 13-storey building is set to be replaced with one of similar dimensions.

Consortium owner Cristo Ltd said the new structure, designed by Christchurch architects Warren and Mahoney, would be 50 metres high and feature glass walls and the same green Welsh slate as the old building.

It will include 11,000 square metres of floor space, including a penthouse, and could be finished by 2015.

Ad Feedback

- The Press

Comments

Special offers
Opinion poll

Which memorial design do you like most?

Memorial Wall with a reflective pond

Table and Chairs

A Green and Peaceful Landscape

Call and Response

Riverside Promenade

A Curved and Inclusive Memorial Wall

Vote Result

Related story: Christchurch earthquake memorial designs unveiled

Featured Promotions

Sponsored Content