Waffles are made of heavy duty moulded Polystyrene. These are about 1 sq meter and about 375mm thick for H class soil.
uses moulded void formers, which are arranged on a levelled building area in a grid (similar to waffle)pattern. Once the concrete is poured it fills the spaces between and across the Waffle Pod and Rib Raft System to form a concrete slab over the entire area. The Spaces between the void formers effectively become concrete beams resulting in a slab which has a structural element of immense strength. The system uses less concrete than the conventional method, of beam trenching, so the need for labour intensive digging has been eliminated.
Will try and get some pictures tomorrow..
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