Below the single project is whether the underground garage is aproll.

Whether to sprinkle water depends on the situation.

No problem, forget it. If you have any questions, negotiate with the developer quickly. Otherwise, the following attributes are useless. Whether to do aproll or not is not necessarily related to whether it is above the underground cavern.

The function of aproll is to quickly discharge rainwater, prevent water accumulation and protect the wall and the lower foundation. Especially in places with poor geological conditions such as collapsible loess areas, the role of water dispersion is particularly obvious and the requirements are higher.

In general, there is a certain thickness of covering between the basement and the outdoor ground. So there is no contradiction between having a basement and doing outdoor aproll in practice and construction. In addition, the aproll of many buildings is combined with the greening arrangement of buildings. Through the rapid infiltration and organized drainage of rainwater by the green space outside the building, the wall and the lower foundation can also be protected.