HI i am talking to some builders and they offer to "upgrade" the slab of the house I am planning to build from M to H1 or H2. The site of my house is H2.
I am a little comfused here. I think M, H1, H2 etc are for classification of sites, not slabs. I looked for it in AS 2870 and cannot find the classification of slabs.
So My question is: is this classification of slabs in the Australian standards/NCC, or only a marketing hoax? Any engineer/builder's input is appreciated!