By Kloe Palmer
The designers of Christchurch's CTV building have been blamed for its collapse by counsel assisting the royal commission.
One-hundred-and-fifteen people were killed there in the February 2011 earthquake.
Stephen Mills, QC, has spent the morning presenting the first of 10 closing submissions, saying there were critical failings in the structure's design.
After hearing evidence from over 80 witnesses, this morning counsel assisting the commission wasted no time in blaming the buildings designers for its collapse.
"In my submission, principal and critical failings occurred during structural design work carried out by Dr [Alan] Reay's firm. For this, both Mr [David] Harding and Dr Reay must carry the responsibility.
"The decisions that they made about the structural design of the building are in my submission the primary cause of building's collapse."
Mr Mills went on to say that there was an inadequate margin of safety provided in the event of a large earthquake.
"The building they designed was not code compliant and was dangerously vulnerable to any earthquake that took the building beyond any distance of its elastic response state, and into the inelastic range."
The building's design wasn't the only thing he slammed – he also highlighted failures by the Christchurch City Council.
"In my submission what the evidence has revealed are failings and weaknesses at a number of levels," says Mr Mills.
"This includes the Christchurch City Council regulatory processes that were in place at the time, and the inadequacies of the post-earthquake assessment processes carried out by the council."
Legal teams for 10 witness will give closing submissions over the next two days. Next up this afternoon is the lawyer for Alan Reay Consultants, who is expected to completely disagree with Mr Mills' statements this morning.
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