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New Zealand
Sub-industry
House
Problems
Earthquake Damage
Location
Christchurch, NZ
Year
2011
Solutions
Slab Lifting
Technology
Slab Lifting
House Floor Raised and Re-levelled
Summary
This building had just been completed when an earthquake struck. There was subsidence along the 25 lineal metres of its back wall with the drop ranging from 24mm to 100mm. Also affected by the earthquake were areas in the centre of the slab floor.
The building was corrected in just two days by Uretek Deep Injection and this house resisted subsequent seismic shocks, while others around it suffered badly.
Objectives
We were required to re-support and re-level over 40% of the house footings and floor.
Solution
Of typical brick veneer construction and a concrete slab-on-ground floor, the house presented no unusual problems and was corrected with precision by Uretek Slab Lifting.In just two days the team had the house re-levelled to within 5mm, right across this very wide dwelling.
After the subsequent significant earthquakes which occurred five months later, this site suffered no further damage in contrast with neighbouring buildings that were badly damaged.
This served to demonstrate the liquefaction mitigation benefits of Uretek.
Resources
Download a pdf version of this project here
House Floor Raised and Re-levelled
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Concrete Slab Beneath Tank Re-levelled in Lyttelton
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