| 摘要 |
A radon removal system includes a slab forming part of a foundation of a building, a perforated pipe extending under the foundation, the perforated pipe being connected to a vent through a sealed system (for example a sump with water inlet, sump pump and water outlet) to a blower for generating a negative pressure in the perforated pipe and the blower being connected to the vent. The perforated pipe extends under the foundation to a central area of the foundation. |
