Slab
By George Giannakakis · B.Arch.Studies · M.Arch (UniSA) · RLA300580
Last reviewed: · How we research
Slab explained in detail
A concrete foundation that forms the base of your home. Types include slab-on-ground (most common), waffle pod slab (for reactive soils), and suspended slab (for sloping sites). The slab stage is typically the first major construction milestone after site works.
It’s common for people to spend most (if not all) of their budget on the house/land, so in this episode we outline the top 5 items that you should be budgeting for that are often outside of your building contract.
Watch full episodeRelated Terms
Frequently Asked Questions
Common questions about slab
Your slab type depends on soil classification and site conditions. Conventional slabs suit stable soils (Class A). Waffle pod or stiffened raft slabs are used for reactive clay soils (Class S, M, H, E). Suspended slabs work for steep slopes. Your engineer will specify the appropriate slab based on your soil test.
More Terms in Construction Phases
Verify against the binding rules in your state
BuildPilot is an independent Australian building platform, we publish guidance, we don't hold a building licence. Every Australian residential build must comply with the National Construction Code plus state-specific Acts and consumer-protection law. The authorities below are the primary sources of truth for the rules that actually apply to your project.
National
The primary national set of technical building standards that every Australian build must comply with. Volume 2 covers Class 1 & 10 buildings (most homes).
Specific material, product and method standards (e.g. AS 3700 masonry, AS 1684 timber framing) referenced by the NCC.
National peak body for residential builders. Publishes the most widely used home-building contracts and consumer guidance.
National peak body for general builders. Publishes commercial and residential contracts and industry guidance.
By state & territory
Links above open the public website of each authority. BuildPilot is not affiliated with these bodies and does not act on their behalf. Information on this page is general - check the current edition of the NCC and the relevant state Act for binding requirements.
We use cookies to improve your experience. Cookies on. Learn more