by Paul Uno
Independent Presentation 18th July 2021 by Paul Uno
BE MBdgSc MIEAust CPEng NER RPEQ APEC Engineer IntPE (Aus)
Director – Engineering Training Institute Australia (ETIA)
Executive Summary
This presentation is a summary of information collected to date from various sources outlining the potential causes of the failure of this structure. It also provides an insight into the implications of this collapse on mid to high rise structures in Australia located near the ocean.
VIEW FULL REPORTby Paul Uno
Independent Advice to NSW Minister for Planning and Housing – 14th January 2019
Executive Summary
At the request of the Hon. Anthony Roberts, Minister for Planning and Housing, an investigation was carried out into the cause or causes of structural damage to the Opal Tower at Sydney Olympic Park, which was first observed at Christmas 2018. In addition, the investigation reviewed possible remedial action to repair the damage to the building. The terms of reference also included a request to consider any recommendations for the future, with the intended purpose of assisting in avoiding problems with high-‐rise construction such as those addressed in this report.
Based on all available information, the following opinions, recommendations and findings of the investigation are presented. These are listed below under each term of reference (TOR) provided by the Secretary of the NSW Department of Planning.
by Paul Uno
by Wilson Jacob, News Times UK – 5th February 2019
Leaked contractor’s video reveals the true devastation of ticking Opal Tower timebomb
A leaked video of the Opal Tower construction site reveals the shocking short-cuts taken by workers that left the botched tower block a ticking timebomb.
The footage, which was taken three years ago by a worried whistleblower, captures the bungled building work inside Sydney’s Opal Tower, which has been dubbed as ‘patch up job’ by an insider.
In the video an abundance of negligence’s were recorded, including one concrete slab between the tenth and eleventh floor which is riddled with cracks.
by Paul Uno
Independent Advice to NSW Minister for Planning and Housing – 14th January 2019
Executive Summary
At the request of the Hon. Anthony Roberts, Minister for Planning and Housing, an investigation was carried out into the cause or causes of structural damage to the Opal Tower at Sydney Olympic Park, which was first observed at Christmas 2018. The investigation also considered possible remedial action to repair the damage to the building. This interim report presents the preliminary findings of that investigation.
by Paul Uno
Written by Paul Uno. Originally published in “Australian Concrete Construction” magazine, December 2011 edition.
Cracks in concrete are always a concern for both client and contractor. Since concrete first emerged over 2000 years ago, it has cracked when subjected to adverse conditions. The introduction of steel reinforcement did tend to assist in limiting the onset of cracking but this only really assisted crack control in hardened concrete.
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