Posted: 4 July 2018
The original investigation looked at the building design, construction and land influences that could have affected the performance of the building. The expert Panel published a report of its findings in March 2017.
Statistics House was subsequently demolished in December 2017 and January 2018. During this process, the engineering consultant engaged to monitor the demolition observed that the seating provided for some of the precast concrete floor units was less than what was shown on the original design documents. This new information led MBIE to reconvene the expert Panel to determine whether this new information would change the findings made in the original report.
The Panel has now issued an addendum to the original investigation report. The Panel concluded that the evidence of short seatings for the precast concrete floor units does not change the original conclusions about the primary cause of the partial floor collapse.
The Panel has presented three new recommendations in the addendum for MBIE to consider.
Since the original investigation MBIE has completed a significant amount of work responding to the four original recommendations, including issuing a warning on the use of loop bar details in precast concrete double-tee floors.
Statistics House Investigation on the MBIE Corporate website has the report, the addendum, the recommendations and questions and answers.