As mentioned by aussieta, unfortunately you can't use it unless a structural engineer inspect and certify it.

I understand and agree that they can be inter-replaceable, this is also similar to modifying a waffle slab if the engineer is competent enough.
Generally by increasing the height you will…

You can use monolithic slabs which needs significant more concrete and it is different then to waffle and Cupolex? this is beneficial when we are dealing with extreme movements, with…

Thanks for reply Alex,
Replacing top soil and rolling it back is allowed upto 300mm maximum or it has to be controlled which none of the builder will do, I…

If you keep the trees, your engineer needs to stiffen the slab for tree effect or use piers( my suggestion)
Removing trees will cause significant moisture changes, over the time this…

Hi Alex,
- How is the 20%-30% calculated and what is advanced slab heave resistance?
- Waffle or stiffened raft slab would not need piers on H2 site classification, unless you…

You might need bored piers/steel piles, this can be removed or reduce depending on the distance between the tree/s and slab, root barriers are not an effective solution.
Do not remove…

Bracing design as part of Engineering, it can be plywoood or metal straps depending on required capacity.

In Victoria any rectification to slab need to have certified rectification detail/document from your Engineer, generally they need to provide a detail how it needs to be filled/cut locally, I…

Maybe you need to read again carefully all Engineers notes, most of the Engineering plans are nominated not to scale or have an exclusion note that all measurements need to…

- Excavate to 1700mm
- Pour 200mm concrete
- Use 20mm non shrink grout
- Bolt down base plate and post to your structural engineers spec
- Pour the rest of the footing…