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Originally Posted by jollyburger
But isn't that same as any other heritage facade retention? They install some kind of steel/concrete skeleton and tie in the old facade into that?
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Not really. Most facade retention involves a new poured concrete skin inside the heritage exterior, which in turn is an integral part of the new building behind. In this case they appear to be adding the concrete skin, but free-standing, with a series of horizontal braces to the front face of the hotel tower. No doubt it has been designed by an engineer, and doesn't pose any additional risk, but at first glance it seems a bit more flimsy. It's possible the bracing will be more substantial than the render suggests.