[quote= He seems to be suggesting that back filling is my responsibility.
Cheers
I have been thinking of building again in the next 1-2 years. Your statement has reminded me how much…

Hi Gaudi,
Thanks for inputs. The site supervisor is saying something similar that there is no cause of concern as it is on screw piers. He seems to be suggesting that…

From AS 2870: "Surface drainage shall be designed and constructed to avoid water ponding against or near
the footing. The ground in the immediate vicinity of the perimeter footing, including…

Looks like whoever is certifying your build has marked this. I was told that gaps like this allow water to flow unimpeded under the slab so my recollection is they…