Base Isolation

 

In the 1970's 'base isolators' were invented by the Department of Science and Industrial Research in New Zealand. Simultaneously, the advent of digital computers enabled engineers to model the performance of buildings under earthquakes more accurately.

Base isolators are like a suspension system for buildings ­ they seperate a building from the ground. Lead and rubber bearings are installed which function much like automobile shock absorbers, isolating the building from the violent ground movements induced by earthquakes. The isolation system must be tailored to the buildings characteristics and this requires accurate simulation of the performance during an earthquake, a process which requires extensive computing power.

Holmes Consulting Group has an impressive track record with base isolation in America and Australasia. From the first high rise base isolated building (Union House) in the Southern Hemisphere to the largest (Te Papa Museum). Seismic gap to allow movement - NZ Parliament

View some of our recent projects:

Ta Papa Museum
The new Museum of New Zealand.


The Old Bank of New Zealand
The refurbishment of four 1900's buildings.


New Zealand Parliament Buildings
The seismic refurbishment of 1900's Parliament Buildings.


 

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