Waffle pod slabs (also known as waffle board) – This board is completely made above ground by pouring concrete into polystyrene block boxes known as "voids" form.
Wafer sheets are usually suitable for locations with less reactive soils, use about 30% less, 20% less concrete and steel than hardened raft plates and usually cheaper and simpler installed by other types (even in bad weather).
You can buy waffle pod slabs via nicsonsbp.com.au/products which are suitable for flat floors. On sloping terrain or more for complex structures, hardened raft plates are usually the better choice. The waffle plate is suitable for areas of weak and somewhat reactive tone, because it is not embedded in the ground as a hardened plate.
Waffle tables are best for classroom use floor A, Class S, Class M, Class H, Class P and Class E (although you should consult a technician on the suitability of the plate for highly reactive soils and in general to confirm this type this board is suitable for your site).
Different soil class include:
Class A – This means very "stable" soil – mostly sand and rock, insensitive to moisture.
Class S – Slightly reactive soil, easy to move due to moisture.
Class M – Moderately reactive soil, moderate movement of moisture.
Class H – Highly reactive soil, lots of movement due to moisture.
Class E – Highly reactive soil, highly mobile due to moisture.
Class P – "Problem" soils subject to landslides, mine collapses, etc. if you are creating a class P site, you need to consult an engineer.