It can be P class for many reasons, the soil test should indicate the reactivity of the site regardless of being P class or not. You need to make sure…

The new concrete is unreinforced non structural concrete, if the frame is overhanging from old slab, you need to ask how much is overhanging and if it is outside tolerances,…

is the frame sitting on the new concrete ?

it holds a double storey section, it is very clear this rectification should never been used, read notes number 6 second bullet point, has this been sent to engineer for…

These details come with limitations, generally not applicable to steel columns supporting double storey section, can you show the whole page which may have additional notes?

That's right, this help them to avoid going back to engineer

Ask them for computation and how they guarantee there is enough bond between grout and existing concrete

I have sent you some more information regarding this, but for everyone else reading this topic, backfilling should be carried out to engineers specification by builder, a home owner do…

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…

Do you have site plan with survey overlay? it should be the first page of working drawings, if the fall from kerb higher the garage FFL then they should have…

I don't have experience with CCW but most of the cases they allowed carport or garage only if it is not part of dwelling structurally so they can demolish it…

Thanks for reply, agree with your points, unfortunately it is not only builders and certifiers, we show the edge beam approx. depth to avoid the builder leaving edge beams on…

Hi Matt,
This is a fantastic video and thanks for that.
I have designed waffle slabs for many years and I had only one slab failure due to plumbing leakage near…

Is that a frame over hang, make sure your building surveyor request a clarification/rectification from the engineer.

No worries, that is from 2870 and not 3500, see attached images

In the first photo there is a significant crack on the rebate, sometimes they put studs or columns on the rebate, you need to ask the design Engineer to check…

They build display houses better generally, deeper footings etc., I have designed couple of them and all supported on piers as I knew that there will be plants and trees…

Increasing slab height will improve the overall performance significantly, 385 is just the absolute Min. required height, you can ask your structural Engineer and building designer to specify 100thick slab…

Min. is 300+85, the height will be specified by your structural engineer and not soil tester, in your case it should be 300pods + 100 slab thickness which is better.

Hi sid16,
H1/H2 waffle slab heights are the same (300+85) and only reinforcements are different, in regards to retaining walls, you need to have agi pipes behind/front of the retaining wall…

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…