Seismic Analysis & Design Christchurch New Zealand NZ

In February 2011 Christchurch the earthquake that occurred was a very strong natural event, that seriously affected New Zealand's second-largest city, killing 185 individuals in one of the nation's deadliest peacetime tragedies.

The magnitude 6 .3 (ML) earthquake hit the Canterbury Area in New Zealand's South Island at 12:51 pm on Tuesday, 22th February 2011 local time (23:51 21 February UTC).The earthquake was targeted 2 kilometers (1 .2 mi) west of the port town of Lyttelton, and 10 kilometres (6 mi) south-east of the centre of Christchurch, New Zealand's second-most populated city. It adopted nearly half a year after the magnitude 7 .1 Canterbury earthquake of 4 September 2010, which caused great damage to Christchurch and the central Canterbury region, but luckily no direct fatalities.


Destruction in New Zealand

The earthquake caused widespread destruction across Christchurch, particularly in the main city and eastern suburbs, with damage increased by infrastructure and buildings that had already been destabilised by the 4th September 2010 earthquake and its aftershocks. Significant liquefaction affected the eastern suburbs, generating around 400,000 tonnes of silt. The shallow earthquake was reportedly felt across the South Island and the lower and central North Island. Even though the initial quake only lasted for ten seconds, the area and depth of its location to Christchurch in addition to the earlier quakes were the reason behind so much damage.

Altogether, 185 people were wiped out in the earthquake, making it the second-deadliest natural disaster documented in New Zealand’s documented history (after the 1931 Hawke's Bay earthquake), and fourth-deadliest disaster of any kind documented in New Zealand, with nationals from above 20 countries among the patients. Over 50% the deaths happened in the six-storey Canterbury TV (CTV) Building, which collapsed and trapped fire in the quake. The federal government announced a state of national emergency, which remained in force until 30th April 2011.

The total price to insurers of reconstructing was at first estimated at NZ$15 billion. At that point it was already forecasted to be by far New Zealand's costliest natural damage and the third-costliest earthquake (nominally) globally. But by April 2013, the total approximated expense had ballooned to $40 billion. Certain economists have approximated it will take the New Zealand economy fifty to one hundred years to totally recover. The earthquake was the most destructive in a year-long earthquake swarm affecting the Christchurch part. It was accompanied by a large aftershock on 13 June (which caused substantial additional damage) and a series of large shocks on 23 December the year 2011.

SENZ “structural engineers NZ” are still working to this day, helping and assisting with the re-building of those hard hit areas, which were affected by the quakes.

We are here to assist:


Building Contractors

Local Authorities

With all things earthquake related, using our superb skills in Seismic Analysis & Design

Contact us straight away if you are wanting the very best in assistance with drawings and knowledge in this area/field.

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