| CAUTION Always consult a local civil engineer about the foundation design and to find out about the soil and frost conditions in the area. When the soil is frost-susceptible, always use proper insulation. |
| In an area with frost-susceptible soil, the foundation must reach below the soil frost penetration depth or sufficient foundation depth. |
| CAUTION Never make concrete foundations at freezing temperatures. The altered drying process results in poor cement quality and may damage the foundation. |
- 1
- Concrete foundation
- 2
- Light grit bricks
- 3
- Sand/Frost-free ground
- 4
- Close sand
- 1
- Concrete foundation
- 2
- Light grit bricks
- 3
- Sand (upper layer)
- 4
- Insulating material
- 5
- Frost line (frost in the ground / frost-free ground)
- 6
- Sand
- 7
- Close sand
- 8
- Clay