Kōrero: Earthquakes

Strengthening Parliament Buildings

Strengthening Parliament Buildings

In the 1990s Parliament Buildings in Wellington were refurbished and strengthened. Specially designed blocks of rubber and lead were placed between the new foundations and the concrete beams. The blocks act like shock absorbers, preventing much of the movement of an earthquake being transferred from the foundation to the buildings. This method of earthquake-resistant design, developed in New Zealand, is called ‘base isolation’ because it helps isolate the building from its foundations.

Once separated from their foundations, the buildings were supported by special jacks and then lowered onto the rubber blocks. A ‘moat’ was placed around the building to allow it to move up to 300 millimetres in an earthquake. Reinforced concrete was also applied to the walls, which were joined to the floors with concrete and steel. Each building is therefore like a stiff box standing on top of flexible supports.

Te whakamahi i tēnei tūemi

Alexander Turnbull Library, Dominion Post Collection (PAColl-7327)
Reference: EP/1993/1584-F
Photograph by Melanie Burford

Permission of the Alexander Turnbull Library, National Library of New Zealand, Te Puna Mātauranga o Aotearoa, must be obtained before any re-use of this image.

Ngā whakaahua me ngā rauemi katoa o tēnei kōrero

Te tuhi tohutoro mō tēnei whārangi:

Eileen McSaveney, 'Earthquakes - Building for earthquake resistance', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/photograph/4428/strengthening-parliament-buildings (accessed 16 April 2024)

He kōrero nā Eileen McSaveney, i tāngia i te 12 Jun 2006, reviewed & revised 1 Aug 2017