Is it necessary to drain rainwater around villas and houses in Jiangsu?

Not necessarily. According to the relevant information, the problems of aproll and drainage ditch need to be solved. The main function of aproll is to prevent the accumulation of groundwater in the corner from causing soil loosening and loss, and even affecting the foundation of the house. The drainage ditch is mainly to solve the problems of quickly discharging the accumulated water around the building and avoiding the accumulated water from flowing back to the room. If a design can solve the above problems, there is no need to make aprons and drains in the traditional sense.