Are you suggesting Summit Homes, Archistruct, Brickworks and...

Are you suggesting Summit Homes, Archistruct, Brickworks and Wienerberger with network of builders, consultants, and engineers didn't do their due diligence and did not consider whether it would meet the relevant building standards before partnering up with FBR?

Are you also suggesting FBR have been developing Hx over the years without considering the relevant building standard as well?

It's not too difficult for FBR to engage structural engineers, builders, building certifiers to come up with a solution. You will be amazed how much you can achieve if you spent more time and energy working to solve a problem rather than just repeating about it over and over again.