R3.6 for 200mm, R4.4 for 300mm (In a square type building – depends on perimeter to area ratio). This rating is based on continuous insulation, not the ‘Waffle’ design.
Suitable for soft ground, 200KPA, TC2, piles and expansive soils.
Expol ‘Geofoam’ used for levelling sloping ground
GeoFoam is manufactured from standard Expanded Polystyrene foam and is available in a variety of grades to suit different construction conditions (see Table 10.2). Typical densities range from 12kg/m3 to 32kg/m3. GeoFoam will absorb small volumes of water, however this will not have a significant effect on its mechanical properties or performance.
Pressures
| kPa | Psi | |
| Human male – Standing | 55 | 8 |
| Human male – Walking | 110 | 16 |
| Passenger car | 205 | 30 |
| Adult elephant | 240 | 35 |
| Mountain bicycle | 245 | 40 |
| Truck steer tyre (3,000Kgs) | 750 | 109 |
| Stiletto heel | 3250 | 471 |