Where the engineering calls for piers, they are checked once bored and reinforced and before any concrete arrives.
Parts of the Hume corridor carry fill and variable ground, and where the engineer specifies piers the depth on the drawing is the number that has to be met.
Annotated findings from Bored piers inspections on Mickleham builds. Client addresses withheld.

2Slab pre-pourThe day before the pour, while pods, steel and formwork are open
3FrameOnce the frame and trusses are up and the roof is on, before sarking and cladding
4Lock-up (pre-plaster)After roof, cladding and external doors, before the plasterer
5FixingOnce mouldings, doors and joinery are in and before painting
6WaterproofingAfter the membrane is applied and before the tiler starts
7Pre-handover (PCI)About a week before your practical completion dateInstant online pricing, or talk to the booking team on 1300 471 805.
Under an hour on a typical residential site.
They cannot be inspected. This is the most time critical stage of the lot.
No. We report against the engineering drawing. Certification is the engineer's role.
No. Many lots are a waffle raft slab with none.
AS 2870, read alongside the engineering issued for your lot.
Yes, and it is an easy one to follow because everything is open.