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I'm not really up for speculating, just pointing out that building regs does highlight these kinds of risks (fire spreading between compartments) and should prevent it. And that it's basic construction knowledge.
I think everyone involved in building construction (and maintenance) is feeling horribly uneasy and asking themselves if this could've happened on their watch, could they have contributed, directly or through inaction or negligence. It seems self-centred but it's on my mind.
hoefla-
My old job before cycle training was facilities management didn't get to make any decisions about the building works but often ended up getting the day to day as works went on dumped on our team for the building we looked after. Fire safety filled way too much of my time for way too long and practically having the blueprints of the place burned into my mind brick by brick are great memories... ugh
It really feels to me that large properties like this that are traded as assets and the owners might not even ever actually see the physical building just numbers on a spreadsheet, the decisions to do this stuff come from some equally as uninterested types and just follow the trends in what returns the best money. I've had some really depressing conversations with those sorts of people being gleeful they had found for example building guidelines say a bedroom should be so many square meters and they can dodge that by making it a bedroom and some other room while putting in planning then market it as 2 bedrooms, the impact it has on those in the building wasn't a factor for them at all. Maybe the location too the others in the "rich" property the cladding was to improve the views for might be the same people and it's hitting close to home.
Clockwise
From what I can tell a large chunk of cladding people claim the cavity will be filled with insulation in such a way it's portrayed as solid and the cavity full which is clearly utter bs. I'm unsure but have a feeling claddings original uses as a temporary repair to a damaged wall dodge around some regs by placing it similar to scaffolding.