What scientific evidence points to regulation breaches? I have yet to see evidence of this.

johnking Too busy engineering and lawyering. Here you go. The Irish State is also failing to meet its market surveillance obligations. You’ll remember the Head of our National Building Control Office described her resourcing as a national emergency. sciencedirect.com/science/articl…

Mary Teresa Mc Bride National Building Control Office The paper by Leeman et al refers to the incorrect standards. I.S 5 and I.S 20 were the standards pre 2013. Significant changes to masonry blocks were brought in when the EU CPR were introduced to the Irish Building Regulations on 1st July 2013.
(Right)Build regulations 1999-2013

johnking National Building Control Office You really need to read your replies, John.

Mary Teresa Mc Bride National Building Control Office EN12620 was introduced in 2003 but not mandated until 2013. The co-existence period for each standard is agreed between the member state and EU.

johnking Mary Teresa Mc Bride National Building Control Office 11 years period of coexistence? When your document says 1 year I understand there is some wiggle room but from 1 year to 11 years...

Those 11 years happen to be the main period the defective blocks were made.