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Project Profile Z13 Y078

Cold Storage Facility Re-levelled by JOG

Sub-industry
Factories & Warehouses
Problems
Earthquake Remediation
Location
Christchurch, NZ
Year
2013
Solutions
Ground Improvement
Technology
JOG Computer-Controlled Grouting

Cold Storage Facility Re-levelled by JOG

Summary

This freezer store, with walls built of precast tilt panels, suffered earthquake subsidence to the extent where the storage racking could not be fully utilised.

In two weeks Mainmark rectified the settlement, with JOG integrated computer grouting.

Objectives

To raise and re-level the building to enable the racking to be used to its full capacity.

Solution

A continuous JOG circuit of 36 primary injection ports was installed along 56 lineal metres of 11m high wall. We then proceeded with a sustained sequence of injections of JOG cementitious grout.

Continuously monitored and computer controlled, the lifting of the very heavy structure was uniform and gentle. This process raised the side of the building as much as 57mm, bringing the area to the required level.

The integrated computer grouting was completely successful. The freezer store was returned to 100% operation.

The client’s satisfaction resulted in an extension of the remediation with our raising another 30m section of wall & drive-through slabs, requiring lifting of up to 30mm.

Resources

Download a pdf version of this project here

Cold Storage Facility Re-levelled by JOG
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